Pontiac 6x head
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 … 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 …
Pontiac 6x head
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WebApr 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 … 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.
Web400 Pontiac 6X-8 Pair Cyl Heads Fits 455 Date C288 F087. Opens in a new window or tab. Pre-Owned. $500.00. aandounlimited (501) 100%. Buy It Now. Free shipping. 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 ...
Web41 rows · High output Pontiac V8 Cylinder Heads. 1962 – 389 SD Code 544127. 1963 – 389 SD Code 543797. 1967 – 400 Ram Air or 428 Code 670. 1967 – 400 Ram Air Code 97. … WebApr 9, 2024 · If you’re looking to get maximum performance out of your Pontiac 400 engine, ... To make things more simple, he installed a RA IV cam, ported 6X heads, deamon 825 Carb, RPM intake, dougs headers, and a 3-inch pipe in the back. It has 450 horsepower and 500 horsepower plus a combined power density of 500+ feet/lbs.
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) …
WebOct 9, 2003 · The 4X head was the 49-state casting used on all '73-74 400 and 455ci engines. Since Pontiac offered the 400 2-barrel, the 400 4-barrel with both manual and … in a light speedWebJan 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. inactive accounts credit card reportin a limited liability companyWebSep 21, 2024 · Re: Pontiac 6X heads and cam suggestions. by Firechicken » Mon Sep 21, 2024 1:23 am. Check your heads for a secondary stamping on the side boss. 6X-4 is around a 92cc chamber. 6X-8 is about 101cc. For a mild build with factory heads and .450ish lift at the valve, keep the 30 deg. Intakes. cpmotors. inactive account quickbooks onlineWeb6S-9 400 w/AIR, 101cc 2.11/1.66" The 6X-4 and 6X-8 were the only heads used after 1976. Stampings on 46 Head Code Just some more codes and sub codes for the 46's.One set is from a "WP" 74 GTO, one set from a 74 "YS" GTO 350 and 1 from a "ZB".Very interesting.All small valve of course. inactive akoWebDec 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... in a limited timeWebMar 16, 2010 · Technical Articles. Static compression, (C.R.) on a Pontiac is a function of the chamber volume and the engine displacement. If the chamber volume is increased, the C.R. goes down; if the displacement is increased, the C.R. goes up. Following is a listing of the chamber volume in cubic centimeters (cc) of selected Pontiac heads used from 1966 ... in a limited partnership a general partner