WebPresenting the PowerPort® 175 cylinder heads—specially designed and engineered to deliver more go for 390-428 engines! The heads are a direct bolt-on for all 1961-76 … WebApr 30, 2014 · Also available are CNC-ported FE aluminum heads with 2.25/1.71-inch valves, which calls for 4.230-inch minimum bore size. Expect to see 355-plus cfm intake and 250-plus cfm from these CNC-ported pieces. Check out these high-swirl/high-quench 72cc chambers sporting 2.25/1.71-inch valves and 11/32-inch stems/guides.
FORD 6.4L/390 Ford big block FE Cylinder Heads - Summit Racing Equipment
WebUnderCover Porting Our “Undercover Porting” adds 15-30 horsepower to your engine combination by modifying the critical areas of the head and retaining a stock-looking port. Acid Porting Acid Porting uses chemical treatments to enlarge the intake ports, which maximizes air flow & increases intake volume, while maintaining a stock appearance. WebThe 427 Tunnel Port C7OE-K head conceived for NASCAR was the ultimate FE wedge race head beyond the High Riser with a vast 2.170 x 2.340– inch intake and 1.780 x 1.300–inch exhaust ports. Exhaust port width is a pinch narrower for aggressive scavenging. The Tunnel Port concept was strictly for high-RPM use and never intended to be a street ... how much is zara tindall worth
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WebBlue Thunder FE heads are machined to high rise rocker stand height for potential porting. Uses high rise valve train geometry, and components. An additional .100” material is added to the top of the medium rise rocker and spring pads, and .200” material added to the top of the high riser, allowing the engine WebOct 16, 2007 · I find the benefit on an iron FE head are as follows in order of importance. - Exhaust bowl, specifically around the guide. - Exhaust seat to bowl transition. - Intake … WebProMAXX Performance has designed a complete new line of performance heads that meet or exceed the big names in the industry. International Shipping Options Call 1.800.235.4323. Home. About. Performance. Series One. Maxx Series. ... We have taken our 100% CNC ported intake and exhaust runners and have made them into an “As-Cast” version ... how do i know if i have cll