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#22
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I started with a like new 1975 200 horse smogger with around 26,000 orig miles and yanked it because of an oil leak the car had due such limited use. It ran great, but it lacked power. I rebuilt a 1970 455 short block w/.030” forged trw pistons & balanced it & used a torque plate. I went with the larger chamber 6X heads, I Milled em, and pocket ported em, did some bowl blending, a 3 angle valve job with new stainless valves. I believe the compression came to 9.4 to 1. The porting and bowl blending I did just what I was taught with Ford FEs and applied it on the 6xs. Added a 1971 non egr intake as I was told they were superior to later egr manifolds, comp cams 255 Dual Energy cam, roller tip rocker arms, and added Ram Air Restoration exhaust manifolds. Really, nothing special and I’m not sure how many cfms I gained but the end result was night and day. For a tall feared land yacht it moves pretty quick.
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Two 1975 455 Grandvilles & '79 455 Trans Am ‘69 Camaro SS 396/375 (owned since ‘88) ‘22 Toyota Sequoia V8 ‘23 Lexus LS500 awd ‘95 Ford F-super duty 4wd 7.3 p-stroke & countless Jeeps & off road vehicles. |
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