Pontiac 6x head

WebFeb 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 ... 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 …

help pontiac head porting - Don Terrill’s Speed-Talk

WebMar 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 ... 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. solution architect skills set https://histrongsville.com

4X Racing Heads - Tech Articles - High Performance Pontiac …

WebJan 25, 2013 · When it comes to cast-iron Pontiac cylinder heads, the Round-Ports are the fancy of every performance enthusiast, but the smog-era D-port (4X, 5C, and 6X) castings … WebJul 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 … WebFind many great new & used options and get the best deals for For Pontiac GTO 2004 2005 2006 6x 6000K LED Combo Headlights + Fog Lamp Bulbs at the best online prices at eBay! Free shipping for many products! solution architect skills required

Pontiac 455 Engine Buildup - Hot Rod Magazine - MotorTrend

Category:Maximizing Performance: How To Get 400 Horsepower Out Of Your Pontiac …

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Pontiac 6x head

1970 Pontiac LeMans Part 10, 455 Pontiac with 6X Heads …

WebFeb 3, 2024 · The Pontiac 62 head casting is an important component of the Pontiac engine, and the question of whether the head is screwed in or pressed is a common one. ... As an example, a 4X or 6X head could have … Web38 rows · Click Here for Edelbrock Aluminum Head Installation Sheet PONTIAC HEAD …

Pontiac 6x head

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WebJan 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. 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.

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 … http://nitemareperformance.com/cylinderheads.html

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. 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 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.

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. …

WebMay 28, 2013 · 874. The 6x-8 heads are low compression heads, they will work good on a 400 engine if prepped properly, larger exhaust valves, port work, etc. 500 hp is a pretty … small bmw crossoverWebJan 1, 1999 · The 6X heads are popular and plentiful; most '76 to '79 350s and 400s had them as standard equipment. ... Pontiac #96 Head Flow Numbers (at 28 inches of H2O) … solution architect technical specificationsmall bmw decalsWebMay 10, 2005 · While other heads from the same era may offer satisfactory performance in any given combination, we limited our testing to 4X-7H, 5C-8, 6X-4, 6X-8, and 6H-6 … small bmw motorcycleWebFeb 8, 2024 · The Pontiac 6X head mystery is one of the most perplexing automotive mysteries of the 20th century. In the early 1960s, the Pontiac Motor Division of General … solution architecture capability mapWeb6S-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. small bmw sports carWebitem 8 Pontiac GTO Firebird Cylinder Heads #46 389 400 428 455 ORIGINAL 1969 w/MANiFOLD Pontiac GTO Firebird Cylinder Heads #46 389 400 428 455 ORIGINAL 1969 w/MANiFOLD. $139.00 +$160.00 shipping. You may also like. Current slide {CURRENT_SLIDE} of {TOTAL_SLIDES}- You may also like. solution architect wiki