Quote:
Originally Posted by se428bandit
I have a 428 HO being built for my '69 GP, I want to go with a hydraulic cam and eventually run it is a FAST or pure stock race. As far as lifters go, who should i stay away from, I'll probably end up calling bullet and Butler to see what they recommend. My goal is to put the car in the mid to low 13s with 722 heads, LB manifolds, factory aluminum intake, 3.55 gear and a small convertor. One cam I'm thinking about is the crower 60919 470 lift, 231/240 duration at .50.
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Very cool ‘69 GP, and especially the 428HO’s. Well, unfortunately, you can’t run it at the Pure Stock Drags, the event in Michigan, anyway. There are other “pure stock” style races around the country where as long as it looks reasonably stock (no aluminum heads, aftermarket intakes, Holley carbs, and headers) your able to race. The F.A.S.T. rules pretty much let you do any modifications under the engine paint as long as it looks factory, but if they have a savvy tech guy, they may spot the RAIV 722 heads and just let you run time trial passes. Their Factory Stock class pretty much follow our rules (PSMCDR.org), but they may let it go as they are pretty lax about correctness a lot of the time.
Your D-port #62 heads are good as is the cast iron intake and give nothing up to a RAIV top end in the lower rpm range (idle to 3500 rpm). You need low end torque to move your relatively heavy GP and the 62’s will help there. With at least 10.0 to 1 compression, the 2802 cam (224/234/114 at .466”/.488”) is a great choice with Hy-Lift Johnson lifters. You’ll make the 16” Hg at 1200 rpm easily and your 3.55’s would work well a small converter. Any RAIV clone cam is not going to pass the 16" Hg. minimum and have a reasonable sounding 'stock' idle.
Dennis