Pontiac 6x head
WebPontiac V8 400 Pair Cylinder Heads 6X Firebird Transam etc. Pre-Owned. $435.23. Customs services and international tracking provided. or Best Offer. coalyard-classics (5,354) 99.7%. +$61.11 shipping estimate. WebFeb 19, 2015 · The 455 was discontinued after 1976 and a high-performance 400 took its place in 1977. Rated at 200 hp, the new T/A 6.6 received a compression boost to 8:1 using 350-spec 6X cylinder heads, a unique …
Pontiac 6x head
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WebFeb 4, 2015 · lust4speed. Well, I do like 6X's, but my favorite head for a street 455 is the 1971 96 D-port head. Listed as a 96cc head, the ones I have come across start life about 103cc's and are still about 101cc's after a light cleanup mill. The 96's already have the 1.77" exhaust valve as opposed to the 1.66" on the 6X heads. WebJun 21, 2010 · 1 Posts. #2 · Jun 5, 2010. the 6x-4 is a smaller chambered head will rase your compression to 8.1:1 they origanially came on the pontiac350 91cc i belive some say …
http://wallaceracing.com/headsearch.htm WebJun 21, 2010 · 1 Posts. #2 · Jun 5, 2010. the 6x-4 is a smaller chambered head will rase your compression to 8.1:1 they origanially came on the pontiac350 91cc i belive some say 93.74 but i think thats a load of bull you will notice the diffrence and yes the-8 heads are low enought to run a supercharger but i dont know how much boost you would want to run ...
WebDec 16, 2024 · It's been a long time coming but we're finally getting a chance to get back to the 1970 LeMans project and get this big blue Pontiac 455 put back under the h... WebThe 6X head was mounted on the L-78 400 cubic inch displacement engines between 1977 through the final installment of 400 engines in 1979. However, it appeared to many that …
WebJun 10, 2024 · The 6X heads have the much needed for a 455 size motor 3 to 4 CC larger Intake port that the long stroke of the 455 ... 73 Ventura, SOLD 455, 3740lbs, 11.30's at …
WebAug 3, 2013 · The 6X heads were used on some 350 and 400 Pontiacs. The resulting compression ratio depending on which chamber size you have. Look for the secondary … greeting digital cardsWebFeb 24, 2008 · help pontiac head porting. I am doing up a set of pontiac 6x-4 heads and first time on the bench was very encouraged at low lift flow up to .500 and then port stalls out at 256 cfm at 28". valve 2.11 curtain area at .500 ,3.315 -- Throat 87% area =2.61 MCSA = 2.365. at pushrod first impression is thats the problem but studying the port and ... greeting doctorWebJul 9, 2008 · 75 Posts. #4 · Jul 5, 2008. The 6X head will give you about 7.6 compression. A few cars around 68-71 have 72 cc chambers that would give you about 10-10.5 to 1. I … greeting during presentationWebApr 11, 2024 · To identify your Pontiac 6x head, you will need to first remove the valve cover from the engine and then locate the casting number stamped on the top of the head. The casting number should be a two letter and five number combination. Additionally, if you look at the side of the head, you will find the “6x” imprinted into the metal. greeting each other meaningWebOn other sites and pages, I see people with broken studs writing asking what happened. Now you know. It is possible to convert a pressed in stud Pontiac head to a screw in stud but, it is better to pick a head with screw in studs to begin with ( all 6X heads have screw in studs ) to keep you costs down. Remember, this is a low buck build. greeting diy cardsWebPontiac Cast Iron Cylinder Head The port work includes fully ported intake and exhaust ports, deburred chambers, pushrod holes elongated for 1.65 rockers, and removal of … greeting during passoverWebJan 29, 2024 · How much can you mill Pontiac 6X heads? Heads can also be milled to increase the compression ratio. Generally, uncut Pontiac heads can be milled at least 0.040 inch; each 0.005 inch removed from the cylinder head deck surface decreases the chamber volume about 1 cc on ’67-and-later open chamber heads. greeting easter