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By famdoc3 - 6 Years Ago
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Are they currently available? Getting ready for a new build 1959 block, forged nitrided crank, y block blower manifold, 471 gmc blower in my 1930 Model A coupe. Should be fun!
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By miker - 6 Years Ago
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You’ll have to call John and ask, unless someone here has talked to him recently.
The F code in my 32 is more fun than I can stand, a 4-71 in an A will be really something.
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By Rono - 6 Years Ago
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I may be wrong, but I was under the impression that the aluminum heads may have higher compression than you want for running a blower set-up on the street. On my blower motor I kept the compression low by using the 471 heads and relieving the block. I'm pretty sure my static compression is around 8.0.
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By charliemccraney - 6 Years Ago
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You can run dished pistons.
When John first started producing the heads, I asked if there would be enough material in the combustion chamber to open them up for boosted applications. I don't remember the answer and a lot could have changed with the casting between then and now. Best to talk to him about it.
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By famdoc3 - 6 Years Ago
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Thanks guys I will talk to Mr. Mummert when I can.
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