Quote:
Originally Posted by John Milner
If you are running stock style 389 pistons, you'll probably want to check your piston to valve clearance since the valve reliefs on a 389 piston are designed for a different valve angle than your 62 heads will have. You'll also want to run pushrods for a 400. Other than those things to look out for, it should run fine and run on pump gas.
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Thanks John.
Sealed power cast .030 pistons 4 valve reliefs (i think they are the 288P), 068 cam and 1.65 scorpion rockers. Custom measured pushrods on the 345's right now. would be around .470 lift with the 1.65 rockers.
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64 Grand Prix 389 .030, 1.65 Scorpion Rollers, Tripower, RARE Long Branch, Custom Stainless Exhaust and mufflers, 3.90 posi 200-4R. 068 cam.
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