906 mopar heads cc. 5 cc) of the earlier 1964-66 .

906 mopar heads cc 060 removes the entire open part of the chamber in the cylinder head the volume will drop less than my Apr 18, 2023 · See more Mopar 1968 Rebuilt 906 Heads Ready to Go Dodge Share. 500"-down volume and chamber cc's, and got a touch over 12. Age: 57. 02 j heads also have an exact 72 cc chamber. Nov 3, 2016 · Search the threads for 906 or 915 head for good info. 902 heads opinion. The 906 heads were used on every big-block engine between 1968 and 1971 383 / 440 Big Block Mopar 906 Heads Chrysler Dodge Plymouth 2843906. if you use a cross ram with the same port window as a 906 head it may flow even less than an original max wedge port Jan 4, 2015 · Here is my old 440 that I drove on the street for years with 906 heads I ported some but I would have much rather built it with 915 closed chamber heads instead of these open chamber 906's. Thread Tools: Display Modes #1 07-15-2000, 01:10 AM SubLime440. . 65 engines used closed chamber heads & I think you'd have a pretty large compression drop by adding 906 (open chamber) heads IF you are keeping the stock bottom end of the motor (I think 65 pistons set pretty far down in the cylinder). Can I get away with running 906 heads? The only concern I have is with my cam. The reason I'm asking is Iv'e only been able to run a 12. Thread starter 72demon440; Start date May 2, 2012 - 72demon440 Well-Known Member. 5 CC volume from the factory}. Mopar heads vary alot so you must cc a couple of chambers in each head. 60 exhaust valve and then the HP '67 with the 1. 030 pistons and a set of 906 heads with a thick gasket. I guess the 915s really suck. Wondered if the 516's were any better than the 906's. Saves a lot of $ compared to going with alu heads, not sure why the guy is asking $3K for a set of heads? Sounds like too much imo. How much can you cut? Boy thats a loaded question as the deack height etc adds variables. 55 gears and automatic. I've personally cc'd and documented 1971 915 heads with . I don’t think you are being a dick at all. dont get talked into a bunch of high rpm range stuff,keep your operational range Dec 3, 2006 · Not only are the castings a little different and the cc of each chamber different,but that makes for a challenge getting all eight pistons to clear the head the same. 181 valve. My understanding is that the 915/906 heads had the 'ski jump' added to the port floor to improve the airflow around the short turn. 74" exhasut valve. as cast the 906 flows better than the 452 , but the 452 doesn't have the short turn like the 915/906 ,which makes it easier for the backyard head porter not screw them up. 5 cc) of the earlier 1964-66 Oct 29, 2011 · OK Thanks meep meep, I just got the rest of the motor apart, looks like the heads need repair, it has a cam in it that says on the end CC 305H10 and P2434 I think it is a comp cam 525 lift 305 duration, and on top of the pistons it says . I have my own equipment to do valve seats and valves. The most common muscle-car-era casting is the 906, but you'll also see 346, 902 Feb 3, 2010 · If I'm not all wrong, the 250 heads originally came mainly in some '68 2 bbl 383's. I ran a best of 12. Nov 8, 2024 · 2 sets of 906 heads part number 2843906 $125 per set. Joined Oct 5, 2019 Messages 67 Reaction score 12 Location A nice pair of these 915 heads starts at about $850 and can go up from there, depending if hard seats are installed and if any port Jun 21, 2001 · Milling heads-What cc would I have ? Performance Talk Moparchat - Home of MOPAR enthusiasts I sent a set of 906 heads to the machine shop yesterday to have them shaved . LarryClark Discussion starter. Jul 23, 2021 · the 906 head will need harden valve seats as there in no lead in fuel anymore so the new heads will have them. My question is, for every . Like I said, I am not absolutely sure the 902 head is the one I am talking about, but someone will jump in if I am wrong. A engine with a bore size at 4" or under will burn cleaner,same as the open chamber head. Hoping for 9. 440 Big Block Mopar 906 Heads Chrysler Dodge Plymouth 2843906. The 915 head gets you about . 02 converted heads are J heads. there's been times when I've milled heads and the intake actually fit better than before. Dave has many other cnc programs for other heads too, and not just Mopar. They probably all flow very similar so I don't think there would be a big power difference between all 3 cylinder heads, not for what I'm using them for anyway. The 906vs 516 was in reference to the 906's I've got now. Jul 17, 2014 · The Cylinder Heads on the 1966 '383' were {Casting #2406516}, which have valves sizes of 2. 915's had the same intake & exhaust port as the 906, just the closed chamber. 010 @ 64ccView attachment 137678 Mar 6, 2002 · Click here to search for Mopar cars and parts for sale. 906 heads are the best for a street motor and have alot of room for hp improvement Jan 24, 2012 · hello, what i have done is bought some closed chamber heads to rebuild for my car without even knowing what heads i had on there at the moment,what i was saying was i had just discovered they are open chamber 906 on there which i will be dumping in favour of the others once spruced up, sorry for confusion Jan 6, 2010 · Haven't pulled the covers on the 413;may find a set of the "decent" heads with at least a 1. 5. 6! Porting, all new valves, seats, and milling iron heads gets expensive maybe $1000 or more depending on porting. As you will notice From 1968 and on the volume of Mar 4, 2021 · While a set of ported, cast iron “906” cylinder heads might have been the pinnacle of piston-topping performance circa 1990, the proliferation of aftermarket aluminum heads over the last thirty years has turned most factory Mar 21, 2022 · I have a set of ported 906 heads kicking around the garage. I recently got a nice clean set of 906 heads from ebay and want to go through them before I begin milling etc. I've searched all the postings here and looked in everywhere else for Sep 1, 2006 · 915s were closed chamber, they had smaller combustion chambers and will up compression ratios compared to a 906 or 213 head, which were open chamber. Aug 4, 2017 · If it is a 2 bbl 383 it is a 8. 5:1 engine, with the minimum CC's, (NHRA rulebook/ as designed) yours are bigger than that number, they all are. Thanks for your help!  · 906 heads rebuild advice Performance Talk. 040 piston to head clearance and getting that with open chambers is tough. 010 milled off @ 71cc, 1990 302 heads milled . Joined Sep 23, 2006 I have a set of 906 heads from my 440 and the 383 I am disassembling has 346 heads on it, any opinions on which ones are better? I had not even heard of the 346s until now. Probably should unshroud the valves and do some bowl work. 060 off you will have around 79 cc chambers. The 915 intake port is reportedly the same shape/design as the 906 head. Combustion Chamber 'Closed' {Factory CC Oct 12, 2013 · 906 heads suck, here is one our experiments, ported with no epoxy or welding. 14 and 1. The owner wants to put Edelbrock RPM heads on it and I'm not sure what cc to get. My customer wants to build a stroker motor later on. I. 1. Different 383/440 heads? otherwise use the 906's. Warehouse. 906's were the May 13, 2002 · Valve Size on 906 casting heads Vintage MOPAR chat : Moparchat - Home of MOPAR enthusiasts worldwide! > Technical Forums > Vintage MOPAR casting # cc of heads: Taz: Performance Talk: 5: 03-09-2001 03:36 PM: All times are GMT -4. comp ratio. Cnc ported 906 also tested on EW’s bench, Dec 29, 2014 · Heads are milled . 020 compressed. I would not be able to afford any Sep 6, 2013 · The factory 2. 5 compression. Check the item description to confirm this fits your vehicle. Per 440 source the new heads have about 84 cc`s and they are closed with a quench surface. I believe they flowed about the same. One in the 906&915 heads, and the heads starting from the 346 all have the same port design. Thread I thought the only difference between stock uncut 906 and 452 heads were the valve seats in the 452 were for unleaded fuel 383 steel crank and when I cc'd the heads on the 4 corners and they came in at 87. Jan 30, 2023 · I spoke with another well-known porter in the Mopar world about two years ago he put a set of these heads on his bench and got 290 out of the intake. 4 cc from what is now 88-90 cc chamber so you would be around 75 cc so it would raise compression over 1 point & put you in the low 9s with a thin steel shim head gasket , if . Free shipping. Funny thought. They have had new seats put in and then were not finished so they will need machining. 20 in the 1/4 with a 1. 63 60ft. 88 int valve due to the back side of the valve head having less tulip to it. They were good for compresstion but the small valves really didn`t flow well. in my old newport(R. Oct 26, 2010 · Used in my Charger while it was still my daily driver. I wouldn't want to stick a whole lot of money in a set. The amount of fluid that was used from the burette indicates the volume of the chamber. Mopar Exhaust Systems . Joined Apr 3, 2009 Messages 8,536 Reaction score 595 The better choice of course is the 906 heads which are easy to find for cheap.  · CUDALOCO, I got the standard straight did not know about MW's till Mopar Nats but I did get them bran-new inthe box with valves for under 1400 off the internet mopar alley classifieds. Forums. Thread starter rmance Nov 4, 2014 · The engine in my dart is a 1975 440:. Also, the smaller 1. And it's not the same as 906 heads port vise, rather the same as the older 516 heads, which is slightly worse design? #5 Mopar Heads Help 2951250's: Sciaretta_3341: Drag Racing Forum: 1: 10-11-2006 11:09 PM: Hemi heads vs. HAH, maybe Nov 25, 2009 · The big difference between them is the port shape , the flame hardened casting on the exh seat is just a nice to have . 3462346 produced 1971-1973, open chamber, 79. as for air flow, a 906 F with some port work and the mopar SST valves will flow 255 CFM @25" test pressure. on pretty much any BB Mopar head. 516 head - 1964-1967 close chambered head used on all big blocks except the 1967 440, different style ports than the 915/906 head, 2. 5 CC's. 004 th cut from the head you loose 1 cc. 915 flow numbers. he said he knows these mopar 440s and Jun 18, 2010 · Porting cylinder heads is a blend of art and science, allowing more fuel and air into an engine's combustion chambers, and more exhaust gasses to exit, for a net increase of power and efficiency. Opens in a new window or tab. 08 intake 1.  · 2951250 b/b heads Performance Talk : Moparchat - Home of MOPAR enthusiasts worldwide! > Technical Forums in the books; it's an open chamber head with 2. 74" valves in the 516 heads and nearly equal the flow of the 906's. 906 vs 452 heads on 440. The inner spring has inside diameter of . 14" and 1. With some work they can be very useful heads. It does flow more in the mid lift area,where the valve spends most of its time. May 14, 2015 · 906 heads came on 383-440 engines from 1968-1970. Joined Nov 9, 2016 Messages 590 Apr 25, 2015 · Thanks guys. My build is mild, 284/484 Mopar perf cam, comp valve springs,stock valves, weiand intake , 650 edlbrock carb, stock crank,pistons,rods. For Aug 26, 2020 · In my '66 300 convertible, I'm running 516 heads and a Comp Cams 21-222-4 hydraulic flat-tappet cam. Exhaust port is same on all 915 and 68 & up heads. So yea, they are probably the best closed chamber heads chrysler ever made. I'm looking for about 2,700 weight. 55 springs 5 angle valve job and back cut exhaust valves. 915's were basically a one year item for 1967, in 1968 heads were changed to 906 open chamber to meet emmissions. Mopar Heads Help 2951250's: Sciaretta_3341: Drag Racing Forum: 1: 10-11 Mar 21, 2004 · They posses decent flow for a stock casting and are generally the favorite casting to put larger valves in. 906's are open chamber with 1. 010 taken off the head surface about how much cc would that be? I think 906 heads Mar 23, 2015 · 906s are an open chamber head, non hardened seats, standard head on all 68-70 big block engines, 71s as well??, can be made to flow really good with larger valves and Nov 21, 2016 · By the time you get a 906 or a 452 set of iron heads ready to make 500 horsepower, with a mild cam (or a radical cam for that matter), you could have bought set of better aluminum heads. Dec 24, 2008 · Has anybody built a 440 using 915 heads that runs on 93 octane pump gas? I'am talking about a streetable engine (less than 6000 rpm). $285. 2844906 produced 1968-1970 open chamber 79. I don't mind the 213 heads, they were very similar to the other big block heads in terms of performance, but had the modified cooling passages. We will probably put some indy heads on that. 4006452 Cylinder Head Casting Number. Big Block Mopar Crankshafts Apr 30, 2018 · Yes, Steve in a 1999 Mopar muscle issue flow tested all the big block heads and the 906 and 915 flow nearly the same in terms of Intake numbers. 2. a set of 452 are as good as 906 and are iron also they have harden seats in Nov 16, 2005 · If the engine is a '70, it wil have 906 heads, which are open chamber design, and upwards of 88-90ccs. 7K views 5 replies 2 participants last post by LarryClark Jan 6, 2022. Also known as the 452 heads, they were used on all Chrysler 440 engines from 1976-1978. 060 along with the intake mating surface. Put the head gasket on the head and used it as a template to un-shroud the valves. Heads still on engine. Posted By: sixpakdodge Re: porting 906 heads - 10/17/09 01:53 AM.  · The only difference between the closed(915)and the open(906,452etc. Moderate/mild cam, split profile MP cam that would probably be considered an RV cam. of 78. times! Solid lift cam. )is that the closed chamber is going to give you more compression. 5 cc. I've got the Mopar Muscle mag articles on the flow tests they did on various BB heads;very interesting reading,but almost overwhelming in information. Visually it's just like the '906' heads, so they should be OK performers. I presently have 906 heads, checked 88 cc chamber volume , and my compression is 10. Posts: 310 all you would do is lose May 2, 2004 · 906 heads/stock valves Ok, this isn't exactly a new question but what's the best anyone has run with a stock set of 906's, maybe some porting but with stock size valves. Mar 6, 2002 · Every 906 head that I've checked (many), no factory heads were ever over 90cc or less than 87cc unless they were milled but I'm sure there are some that are over or less. The engine is a stock 383 with 30 over flat tops and 906 heads. So if they have been milled {. Picture 1 of 6. 915 has 2. 035", but what is the Combustion Chamber CC volume. The Stage VI is a good example. 067 gets you in the ballpark with about . That's where I ran most of my 440's. "stone stock" they are pretty much the same and variables in casting might give one or the other a slight edge at any time. MOPAR 906 heads. 915 heads CR. matching parts makes more power!exhaust is last and needs to flow enough for the whole set up. no joke, the 213 head is the same as the 452, which flow very good with minor porting. 100". Local pickup in South Jersey Green set date codes 05068, 05218 Red set date codes 11278,01079. 915 is 1967 only, which makes them a bit rarer than your average RB head. 74 exhaust valve on 440 hp applications. This makes the manifold sit UP and in all liklihood, NOT line up with the bolt holes or ports. OK, they don't count, yanked around 1976 and there was still the good stuff. 08" Intake / 1. becareful messing with the shot turn . Big Block A body Tech . Jun 7, 2002 · No comparison was made to the pre 66 heads in the article, but it was mentioned that the runners in the 915 were a step forward from the earlier heads, and the 906 was pretty much the same head, but with the open chamber added for emissions reasons. New posts Recent Posts (although some early 1971s were reputed to have slipped through with the 906s). Have one to sell? Sell now. You can put 1. 915 Heads On 383. with them. $500. They are now Max Wedge port size and closed chambered. Plan is to mildly port either set with stock valve sizes for use on a medium performance 383 B engine. The 452 heads will measure out at 90-92cc's on a short stroke engine like 383 it would be a significant drop. I'm trying to determin the approx. I think you'll find that this is a very popular combination of parts,for a good reason,it works. Slightly ported heads. The factory 2. Real compression is about the same as the earlier ones. FWIW; From past talks with a couple of builders and a few racers, the Stage VI is favored to about the 470 cube mark and then people become split on it's use on 500 inch engines. What cc are 906 heads and what would be a guestimate on the compression of this engine. Putting in a Lunati voodoo 703 cam and their recommended springs which are double and damper. can any one tell me whats the intake and exhaust valve size for my stock 906 heads and also the cc volume it would help me alot (1968 heads) #2 05-13-2002, 08:43 AM Sep 5, 2014 · Classic Mopar Tech. Oct 25, 2013 · At the time the 915 heads were appropriate for the cam profiles , compression ratios , weight and gearing of daily driven cars . 030 over Trw L2355 six pack pistons MP 284/484 cam installed 2 or 4 degrees advanced. Here's what to look for to find your set. Notice that most 2. The '915' heads were essentially the early heads with the bigger valves, and used on the HP engines only in 1967. cam should match rpm power band for intake and that will determine your carb size. Inactive User : Join Date: Mar 2002. l. 75 + CR increase. Sep 28, 2020 · I am going to purchase AL heads and I want to increase my compression ratio . 516 being totally different port design intake and exhaust. 14/1. Well, unless you own a head Sep 27, 2023 · Laroy Engines has run over 700HP through 906 heads. #2843906 Cylinder Heads typically left the factory with the Chambers at 88. 4:1 Stock intake Demon sizzler thermoquad Hooker 1 7/8 fenderwell headers 3000 stall convertor. I have heard that a 906 intake port can be made to flow 320 CFM or more, with the proper modifications. Any year 906 head will bolt up on a 65 big block motor. OEM 906 big block Mopar 440 cylinder heads. I've found some 906's at Jun 7, 2023 · Used 906 will be 90 to 92 cc. The time now is 06:28 PM. Will have look for it. I want something big enough to give me a Mar 14, 2012 · The 906 heads in this session were not tested with the raised port window. Oct 15, 2021 · 906 Heads. 88/1. 81 valves bought a set of 452 heads from a swap meet had them ported and polished put the 2. But with slightly larger combustion chambers at 84 cc. May 3, 2013 · Can anyone give me some technical info on mopar 346 heads for a 440. with steel shim head gaskets that are about . Thread Tools: Display Modes #1 04-08-2002, 09:28 PM your 213 heads will flow more when ported than the 906 heads. Aug 20, 2020 · quick math , milling the heads . the intake will be a choke point for good high flowing heads. 383 / 440 Big Block Mopar 906 Heads Chrysler Dodge Plymouth 2843906. Thread For hp/$, if your 906 heads are in good shape, you'll be ahead by changing the intake manifold only. With stock 906 heads at around 90CCs, mine were 91, and pistons in the hole a couple thousands, a stock 383 HP May 26, 2008 · What would the compression be in a 383 using L2315 . Find many great new & used options and get the best deals for Mopar 1968 Rebuilt 906 Heads Ready to Go Dodge Plymouth CHRYSLER 440 383 at the best online prices at eBay! Free shipping for many products! Aug 9, 2016 · Im getting conflicting information on the heads. I have worked on some of this stuff back about ten years ago. 74 exhaust. 75 in. Heat treated, machined steel retainers and valve locks along with heavy duty valve springs are good for . Having said that I've had a set on my truck, 208/174 valves, home ported and cc'd. You must be smarter than the cylinder heads you are working with. 45 to 10. when selecting a conduscive piston "compression distance" height for your desired Compression Ratio WITH the Cam events to be used. 060 and I'm wondering what cc these heads are now. If the block has been milled straight, get the correct piston for the CR you want. The port volume increases from 160 to 165 with a 1. I see in past post claims that it is never what Chrysler documented. 00. Feb 19, 2007 · Which is the "better" Mopar Big Block head, 906 or 452 ? Owner is not sure of the cc's of either. I believe most of the issue is these knock off procomp heads. As a general guide, stock chambers on the 340/360 heads are in the range of 63 to 75 cc. 61@125. the real issue isn't the need for a higher flowing head but the cross ram intake that doesn't flow a lot of air. 010 @ 59. Is it 79cc or what, for 906's. In 68, all the Feb 17, 2017 · generally the 906's will be 88cc and the 452's 90cc. Its not wrong from my experience. Double check to make sure that they have 'not' been milled before. Link To eBay Motors. $450. All aluminum heads are closed chamber also so u would need a flat top piston. T. 90 Stealth heads, and have heads that flowed as good as bare, CNC ported B1 BS heads for way less money. Thinking of getting some heads. Lots of the Mopar shops offer this package for around $700-$800. Probably in the neighborhood of 79-80cc's. Let me know if you need some I might have a few pair Mar 20, 2022 · I have a 440 engine: with 10:1 pistons, 906 heads with 9:14 intake and 1:81 exhaust, 530 lift cam, the pistons are cast, I'm hoping for 520 horsepower, I'm using a 750 Demon carburetor, MSD distributor, 4:88 gears. Thread starter 440DART1970; Start date Nov 21, 2016 - 440DART1970 1970 Dart 446ci Swinger. I wouldn't pay someone to cc Jul 5, 2001 · I just had the heads milled . 78 as far as your wife goes she will learn with time had my 70 Challenger for 29 years and the wife for 27 years remember speed cost it May 8, 2012 · more times than not people will steer you towards an aftermarket aluminum head. You could get it to the low 80’s with the valves and milling. Whith small valves. 14 X 1. Or if I would be better off building the 516's over the 915's. I think 906 heads originaly have a 79. Same reason why they killed off the big blocks. 440source Stealth head review and flow numbers I was shocked to see the pathetic numbers he got out of those heads. factory machining isn't always perfect. Jan 24, 2015 · Put the $200 toward the 516 heads having the exhaust opened to 1. I have not done anything in 15 years and just getting back into engine building. I've looked at some of the piston offerings and don't see a piston right off that would give you around 9. One thing to add to your list that I just learned while working on a 1968 383, is that before the 906 came out, they used 250 heads on early 1968 engines. There is more info on this subject on Feb 1, 1999 · Essentially, the intake port configurations can be distilled down to two basic ports: the early intake port, found in the 1967 915 open-chamber casting and the 1968-70 906 closed-chamber casting Apr 6, 2012 · However, the 906 was cast with open combustion chambers (typical factory volume 88 cc). They have better ports than the 516, some 915's that came on non performance cars did have the smaller exhaust valves, but they can easily handle the 1. jelsr: 03-05-2002 04:29 PM: Nov 21, 2016 · Mopar Technical Forums. As Gary said 2. In stock form, the 906&915's may have a slight advantage in flow at midrange lifts, their shortside design supports that. I think they'll do ME just fine. Location: Omaha Nebraska. The flow characteristics are totally different than the 915 and 906 heads and if you know how to port, they can work good. Jul 25, 2013 · I'm not very familiar with Mopar engines but the basics. Feb 5, 2005 · hello, the 906 F head will out flow the 452 easily. I need to Mar 6, 2022 · Me thinks! Anyway, I ported my heads, un-shrouded the valves, and polished the combustion chambers. Location: Oklahoma. Which by the way came with 1. Apr 10, 2002 · Click here to search for Mopar cars and parts for sale. 69MOPR: 03-05-2002 03:58 PM: Check 'em. Just a point of reference for anyone interested in these heads. Add springs, guides, retainers, keepers and your probably past the cost Jul 9, 2001 · Stock 906 heads had 89 cc chambers. 4, and magnum heads shave . Thread starter Moose440; Start date Jul 4, 2020; Jul 4, 2020 #1 Moose440 Member. Age: 4 AFTER: 360 heads milled 0. 250 heads are open chamber Oct 17, 2009 · Muscle Mopar artical on 906 heads. I have yet to build a big block engine. Believing it to be close to 79cc and plan to use the 906's as this a number matching car. the 452's will usually have one chamber on the end of the head that is deeper than the other three. There were 2 versions of 915, one with the small 1. or Best Offer Feb 4, 2012 · I agree, though the engine(s) seem to perform quit well with small ports. I'm thinking about 10:20 E. 180 CC intake runner. On the last start up an unfortunate series of events led to a bent valve. 500" lift. Dec 3, 2005 · Ron, buddy and pal of mine. 346 or 906 heads. Buy It Now. Feb 28, 2016 · The 906 heads were used on the 1970 383 engine which had better flow characteristics than the 516 heads used on the 1966 383. 60 Exhaust, with a 'closed chamber' combustion chamber {79. You should put hardened ex. Then you can figure the compression ratio, and adjust things. 010 down in the hole. Sometimes you just gamble and install OOTB RPM and Stealth heads for $1,620 and $1,000 - - - Updated - - - I hear the 906 heads are prone to cracking. Haven't been able to get the 915s to make as much flow as the 906s, water passages are different. 60 valves stock. Nov 22, 2002 · 915 heads are basically the same as 906 heads, except for the closed chamber. cat urine gas without any problems. Posts: 12 906 casting. 2951250 Cylinder Mar 6, 2002 · Originally posted by HOLESHOT These heads are usually around 88ccs. Compare that to 215-220 CFM from even the best factory production heads such as 906's or even 915's! Larger 2. Locked; WTB WTB Pair of "906" Heads (2843906) October 1968 or earlier Date code. Jun 21, 2003 · There are really only three types of BB heads - 516, 906 or 915, 346 or 452 (there were also later heads #'s all similar to the 346 or 452). Mar 14, 2015 · And the iron heads will come with better springs, retainers and locks. It has 906 heads, comp ratio is about 8. Jan 7, 2021 · I have done a number of sets of 516 heads and they can be made to work pretty good. The 915's were available at least in '66 -67, maybe '65 and some early '68. Now the 'Million Dollar Quuestion' . If you machine the heads, any intake should fit from there on but before you machine anything, do a mockup to see how things fit. 5:1 even with the deeper valve notches Jul 6, 2020 · C Body Mopar Tech Forums. Sep 6, 2012 · Classic Mopar Tech. Jan 1, 1998 · The year 1967 was significant for Mopar big-block heads with the introduction of the 915 casting, identified by the last three digits of the casting number. P. 81 intake and exhaust valves. 030 L 2293, they are a high dome forged piston, i googled that number and cam up with a trw piston 22cc dome, anyone have any Oct 31, 2017 · 1. padam. Good luck and have fun with yours! A Body Classic Mopar Forum; C Body Classic Mopar Forum; E Body Classic Mopar Forum; F, M & J Body Classic Mopar Forum Jul 16, 2019 · The original 68/69 Magnum/Roadrunner high performance 383 pistons had a compression distance(CD) of 1. Feb 14, 2014 · The alum heads would require reducing the combustion chamber cc's to make the best ratiosmilling the heads is no big deal, just needs to be done the right amount, and pick the correct cam (intake valve closing angle). Home. Member : Join Date: Mar 2000 Would the 906 heads offer any advantages over the 915's? #2 07-15-2000, 01:46 AM Brian_wo . From what I've heard, his bench is stingy. 5cc. 040 over with TRW 2388 flat tops. 95 cc and finely 4006452 produced 1976-1978 open chamber 81. Jul 12, 2013 · The thing is, when you mill the heads, the ports get closer to the deck and you are in effect , making the heads closer together. Thread starter Sedanman; Start date Oct 15, 2014 - Sedanman 67-9 Valiant specialist. Jump to Latest 2. Serno heads will bowl port them to flow close to stock B-1's. Apr 12, 2001 · Click here to search for Mopar cars and parts for sale. Sold as is. Approx what cc would they be when completed ? milling of heads: mopar_nocar: Performance Talk: 5: 02-14-2003 11:14 PM: Milling 906 heads . None of those heads had hardened valve seats. WHAT ARE 906 HEADS? The 906 head was an open chamber head with Sep 27, 2023 · I’ve been working on my Dart for far too long now and when it’s almost time to finish it I’m having engine problems. ), AND A SET OF 906 HEADS ALSO. Any suggestions. BTW Brian I think it is Feb 25, 2012 · I have a 11:1 compression 451 stroker (400) with the 516's stock heads they are 73. i think if you got stage-4 heads witch are mopar they look stock as they are iron. 10 degree locks and retainers 1. 08/1. Mechanical Parts . The only way to be sure is to measure it though. these heads have the "tall" short turn, and when reworked correctly should provide a slight edge in power over the other non-MW heads, especially when using cams with . 452 heads came out in 1976 on the 400-440 engines. Oct 22, 2008 · But if it were me I would want to take advantage of the cubes and run a better head then the factory heads. For another $400, you can get Edelbrocks though. Cylinder Head CC Question: 6t5mopar: Performance Talk: 3: 08-28-2001 12:25 AM Mar 28, 2008 · Actually, it's better to machine the heads for the intake. 030, same cam, E'brok dual plane & same Holley. 5. (cant remember, been a while) Bone stock 452 heads Compression is 9. As far as head work experience I have done steel heads in the past. The Hemi was an offering with huge ports that could benefit greatly from aggressive modifications . Basically looks like its between Edelbrock, 440 Source, and CPPA (Toth Performance). Inactive User : Join Date: Jan 2000. An un-milled head would be 6-8 cc's more than those min's. For less than $100 like previously mentioned take a chance. Pre-Owned. The best way is to pull a head, and see what it has, CC a chamber, and determine how far down in the bore the piston dome is. MOPAR Dodge Plymouth Big Block 906 Cylinder Heads. You have to be careful on plunge cutting those exhaust ports because that is the area that goes into water. Jan 27, 2008 · Breathing wise unported, the 1967 440 HP 915 head intake port and the 906 are comparable. There was a posting some time ago that explained why it was BS. they are both open chambers heads , the 906 casting isn't as screwed up in regards Mar 30, 2021 · The guy has a box with the larger valves from a set of # 906 heads. They are definitely 906 heads though, which were used on 68-70 383s & 440s. 2780915 produced 1967 closed chamber head 73. There are better heads then the Eddy's or Stealth heads but they will cost more. 5 cc's not 78 like most believe, and my motor made 453 hp on one inch manifolds. )with 87 octane u. 17 posts · Joined 2020 Add to quote; Only show this user #1 · Oct 15, 2021. May 2, 2012 · Mopar Technical Forums. Together they have worked on most common and uncommon heads. Thread U can use an open chamber 906 head amongst others. Thread Tools: Display Modes #1 Age: 46. 81 stainless Manley valves. RESULTS: stronger midrange and no change in mileage (16-17 on highway). 60-inch exhaust valve, which had been fitted in standard engines, was discontinued. 74 valves with about 90cc chambers. I stayed with the iron to be more street friendly at my 5200 ft elevation. The main advantage to the 915 is it's closed chamber and better porting than all earlier heads except for the Max Wedge. It is a "dual pattern" cam having a little more duration on the exhaust valve, which somewhat compensates for the smaller 1. I ran a set over 100,000 mi. $150. If you do the intake, it will become a part just for those heads. May 15, 2002 · Click here to search for Mopar cars and parts for sale. Mar 17, 2008 · -the 906/915 heads are basically the same with the exception of the 915 being closed chamber. Has any one looked at/compared the port shape of the 915 to the Stealth? I believe the Stealth has the 2. 1 at 108 up here in Vegas and I'm thinking it's the poor valve job that I got. You want about . Sep 4, 2014 · If you have the heads with the extra coolant hole, just be sure to use the right gasket.  · The machinist that I use for my engines has a very talented head porter working for him. That is much larger as high as 88cc My issue is that I built this engine with stock flat top pistons. Can someone confirm? So my question is, how do both stack up against the 346 heads on my Jul 4, 2020 · In the middle of cam, lifters, spring, the works replacement. 88 Manley Stainless steel valves in them car went from best of 11. Sep 26, 2013 · For a Mopar big-block, the 1967-only 915 heads are the most desirable. Replace the valve and fix the issue. 1 watched in the last 24 hours. 6 and 89 on the other. 60 exhaust valve size. Some Oct 12, 2013 · i'm just following up on an old 1970 mopar article, with respect to the #915 and #906 cylinder heads. Making The Most Of 906 Heads TYPICAL chamber CC on untouched heads is 90cc . Apr 25, 2010 · The EQ castings are much nicer and cleaner than the GM906's, although a virtual clone of the 906. 030 to raise compression a bit, but it still ran fine on regular unleaded 87 octane. 509" lift cams. The later heads like 346 or 452 have a flat intake port floor and that design is not as good as the 915 / 906. L. present day heads: goose: Jun 8, 2006 · Mopar head numbers 2406516 produced 1964-1967 closed chamber 73. 6 and 88 on one head and 87. Free local pickup. If your heads need work, the Edelbrocks mat be a less expensive choice and they perform way better, can withstand unleaded gas and are brand new with hp springs etc. I have done port jobs on 906 heads using Mopar templates. 14 Jul 22, 2024 · From research on this forum, I've learned the difference between 906 and 452 heads is hardened valve seats and I believe there was 2 cc's less volume on the 906 heads. I believe Jul 9, 2001 · I picked up a 73 440 . Oct 10, 2023 · Like Sam mentioned, get some 906 heads and get them ports cleaned up for a bit more cfm/flow, a valve job and get the right springs to go with the cam of your choice. iron_specialties (93) 100%. This chart will get you in the ballpark. I quickly ported a set that maxed out around 267 if I remember right to over 300cfm with little effort. My heads have been extensively ported and modified. gig_supply_co (169) 100% positive; Seller's other items Seller's other items; 383 / 440 Big Block Mopar 906 Heads Chrysler Dodge Plymouth 2843906. 6-61. Sponsored. They do not recommend going to larger valves as they cannot substantiate a noticeable gain on the flow bench with the 906 casting heads. They are essentually a step down from teh 340 x-heads. Pulled my 4000 pound B body to 114 mph with a 509  · I use to run 906 heads with the 2. 78cc(closed) to typically 88cc(open) You heard wrong on the valves 906 has 2. Need to find out cc,s to work with my 13;1 forged pop up's. Oct 11, 2023 · I brought the heads to work, I'm going to cc all the chambers later once it's cleaned up. 3:1 static CR considering the 78cc chamber volume of the 915's. Then the main difference becomes the open vs closed chamber. Jul 24, 2024. Parts Only. The Edelbrock heads are not copies of the 915 but do share the closed chamber design. You could buy valves, springs and porting, a pair of $999. My 516's have 76 CC chambers, ported, and 2. 08 intake and 1. Dec 1, 2018 · FYI, un-milled 906 heads are about 88 CC. Aug 9, 2017 · I wouldn't get too hung up on that letter at the end. The trick was to mill the heads at both the deck AND the intake face so that ANY intake could be used on the engine. 74 exhaust valve. 60" exhaust valve. 81" valve sizes also come standard. My question is I just shaved the heads . 02 j heads I have tested flow 228cfm intake and 142-147cfm exh. 020 mopar head gasket for your calculations? For each . In NHRA super stock and stock, the stock head has to be used. Thread Tools: Display Modes #1 04-09-2001, 01:11 PM coach71. FOR SALE 906 Heads. Seems to me that the intake port on the stock 906 head is around 220 CFM at . Nov 25, 2004 · There are two basic intakeport designs in the later big block heads. You can't find much worse big block heads. The difference is, the later years had the hardened valve seats for crappy pump gas. Gallery. They vary. After shaving . The early 60`s up to 67 had a closed chamber head. iron_specialties (97) 100%. Apr 10, 2019 · I am looking for a set of aluminum cylinder heads to replace the 906 heads I have on my 383. Avenue weren’t telling was that the standard 440, the 383 2V, and all passenger car big-blocks had the same 906 heads with the same valves Oct 9, 2006 · I have read in a recent Mopar magazine that as far as the airflow characteristics, all open chamber heads after the inception of the 906 head in 1968 flow essentially the same airflow. Location: missouri. The Eddy's will outflow the factory heads stock for stock and ported Eddy's will flow better then worked factory 452's or 906's. Feb 16, 2005 · To expand on what Trey said: The 516's are closed chamber heads with 1. To get a good baseline and make sure I know what I have, I want to cc the heads. Generally on our bench the 906 has a slight edge, 3-5 cfm at various lifts but not all lifts. Mopar Muscle took their "cheap-build" 400 and put Edlebrock heads on it and gained over 70HP on regular unleaded over 92 octane Rocket Aug 27, 2017 · Either way they are still 906 heads correct! FOR SALE Dodge Chrysler Plymouth Mopar 383 400 440 Big Block 906 Heads Look!! 68plymouth383; Jul 18, 2024; Mechanical Parts; Replies 2 Views 1K. Aug 17, 2023 · Mopar Technical Forums. 14 1. Didn't want to go too far! After Oct 16, 2017 · Don't run the Edelbrock 5090 E Street Heads - Speed Pro Forged Flat Top Pistons (No Valve Reliefs) - And the Mopar 284/484 Cam Didn't work out as planned this past spring All I did was swap the 906 heads that I installed on my 1971 383 magnum that was totally rebuilt about 25 years ago , Speed Pro pistons where about average . 060. 60 valves, poorer flow than the 915/906 heads (maybe 15 cfm less on the intake, maybe a little more difference on the exhaust), chamber volume around 84 cc as cast 915 head - 1967 only, all 440s came with May 18, 2001 · 915'2 were the first High Performance BB heads. Heads milled . Jul 29, 2013 · heads just need to flow enough for the set up. Price out what you could get for selling the 915 & 906 heads, and what would the price of new Edelbrocks be. These heads have outstanding features that include premium one-piece, stainless steel, high flow 2. The compression ratios you are reading in a book are what they are supposed to Feb 12, 2007 · The "cast date" numbers you posted do not correspond to any date code format that I have seen. 81 valves flowed about 285 at 550 and 185. Engine, Trans & Driveline . If you can spare the coin, get solid bronze guides put in Dec 28, 2002 · Hi I am at the early stages of doing some head work to the 72 440 in my 70 RR. These heads outperform the 180CC dart platinum's on the track, despite being considered a 170CC vs. Inactive User : Join Date: Mar 2001. Which cc runner heads do you have? What is the problem, Piston to valve clearance? Or cam installed incorrectly? You won't 906 Heads, what cc? What cc are 906 heads? Hybridized: 03-05-2002 03:54 PM: I've cc a set and it was around 92-93 cc. Mar 4, 2010 · The aluminum 440 source heads look like a great deal. The reason why Mopar went to the open style was for emission purposes. Stealth heads, not the "Super Stealth". The Intake Ports May 1, 2017 · Do not fill the hole in the plate, just up to it. I like the Indy Nov 7, 2005 · The 516's will work but are the doorstops of the big block heads. 09@119. I have no idea what "SS" heads may do. 7:1 compression, 91 octane, single 4150 4bbl, single plane intake, Erson solid roller that was too big, but what the heck May 5, 2020 · Classic Mopar Tech. stomac_14 (11) 100%. . I tried to buy the 440 source aluminum heads bare but they won't sell them that way. Aug 1, 2006 · Read the tech article on a Mopar Max Wedge Cylinder Heads Guide, brought to you by the experts at Mopar Muscle Magazine. Mopar Parts and Cars Marketplace. Were you using the . Inactive User : Join Date: Oct 2001 Feb 16, 2012 · Neither head has an advantage over the other as a 10:1 915 head and a 10:1 906 head will require a differently designed engine to accomplish the same compression ratio. 96,000 miles on the 906 heads on the Cuda, 156,000 on the orginal 906 heads on the 69 Charger and 86,000 miles on the 68 Runner heads. I've been weighing the pros and cons and I think I'm going to pull the trigger on a Hyd roller cam. Dual springs for a solid 282s comp cam. Engine, Transmission & Driveline . 915 heads. The article provided no info on the 516, but certainly raises questions about the much revered 906. 060 will remove approx 14. Posts: 34 906 Heads, what cc? What cc are 906 heads? #2 03-05-2002, 03:54 PM Hybridized. Although the 915 of 1967, and 906 of 1968 to 1970, had the same ports, the new 346 was a significant departure in terms of intake port  · Click here to search for Mopar cars and parts for sale. seat inserts in them to stop seat erosion. We had one exhaust port crack and we knew we had screwed that one up. Intakes are the same size on both heads. on a 1970 'stock' 440 gtx with 3. Both 906 & 915 really like pocket porting. 932". a 'brand' new The 906 heads really woke up the B/RB engines as they had bigger valves than the 67 and earlier heads. so cams dont really "match"heads,they match the intake more. More than likely have the small valve units. 060, what are my CC now? Dec 30, 2023 · lol. Hello guys and gals! I’ve been slowly putting together a 350 Small block Chevy. 452 heads cc's. I still say the harden seats are bull s--t. Nov 15, 2020 · The cylinder head cc data that is in the Mopar "bibles" is basically the NHRA "legal" minimum spec. 5-81. Combustion chamber is a "closed chamber" design, with quench area built in, so the benefits Jul 17, 2004 · All the 68&up heads and the 915 heads are good factory heads. I did a bunch of messy cc'ing of the . 035"}, the CC level should be around 80 CC's. My 906 heads were dated 5-4-9, meaning May 4th, 1969. or Best Offer. 60exhaust on 383 and non hp applications but steps up to a 1. 015 in the hole on Feb 2, 2023 · The old Mopar Muscle magazine did some porting of the common BB heads, around the year 2000 I believe. 451ci/400 block, 9. The 452/906 castings have a larger intake port volume than the standard castings for $599. 1 I want to increase my Compression with the new Mar 23, 2015 · 906 heads forged crank rebuild the Heads FIRST, then "CC" them for Volume when done, then apply THAT CC number with a known Head gasket like the Fel-Pro # 1009, etc. Contact Us - Apr 22, 2022 · The 452's had the different intake port.  · It would be more expensive, but if you go with aluminum heads such as MP stage 6, or Indy SR, they have 75 cc chambers and that would bring the CR to 9. My old 440 you see here was a stock bottom end but I used KB quench pad pistons and built quench in the eng. It was always 440 stuff with domed pistons. Thread Tools: Display Modes #1 03-05-2002, 03:44 PM RadCuda. Plus both heads have essentially the same flow potential. I have stacks of bb heads of all numbers, they are at the point of scrap value now. Sep 2, 2002 · Originally posted by dirty dan UNKNOWN CONDITION 1960'S ERA 383 (WITH UNKNOWN HEADS. Oct 15, 2014 · Mopar Technical Forums. Feb 12, 2023 · Mopar Racers Forum . 74 and brand new stainless one piece valves you will be way further ahead. Aug 27, 2023 · The 975 cylinder heads were used on all 440 engines in 1975. 550 or less lift and moderate porting. jildqe fybigq tanjd tkevr tpta hygriu dwkak yijoe srjmgd pbra