WebOct 2, 2012 · GT40 vs 351W heads What will the power difference be on a 351W engine from a pair of C9OE 351W heads that have 1.85/1.60 undercut valves, guide boss … http://vb.foureyedpride.com/showthread.php?115521-351w-heads-vs-GT40P
24 Year-Old Facelift: Refreshing GT40 Cylinder Heads With
WebJun 20, 2011 · Too many variables can make a answer to either questions a moot point. Unless you have a deal on the GT40 heads, you must know there are so many better performing heads out there that will bolt right … WebDec 20, 2024 · The biggest advantage to the GT40s is that they were made for unleaded gas. The early 351 heads have 4 additional manifold bolt holes for the early 4bbl intakes. '77 up and after market 351 intakes don't use the extra bolts. Both heads would benifit from a valve job with new springs. comic bodybuilding
351W heads vs gt40p heads? Modded Mustang Forums
WebMay 17, 2024 · Same size as GT40. Not GT40P Bolt holes are 7/16”. These heads have two raised bars on the ends. It has MM in raised letters on the side. The stock spark plugs from my 351w E7TE heads thread/fit in these heads. I’ve read they are not the same in some, the thread size or pitch is different on some. Uses the same head gaskets as on … WebAFR Cylinder Head Aluminum 220cc Intake 7/16″ Stud 72cc Chambers Without EGR Pair 289/302/351W. The GT40 heads are a little bigger. This gives them a slightly better flow and build quality. The GT40P heads have more aggressive camshafts, which will give you slightly more power. WebNov 28, 2004 · The GT-40 is based off the early 351w heads. I would say which ever set you will end up being the cheapest. Also my D0OE heads had 60cc chambers so you'd net a small bump in compression. Satistraction Registered Joined Oct 6, 2000 1,600 Posts Discussion Starter · #7 · Nov 27, 2004 does anyone have actual flow numbers? 1971 … comic book 1920