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The 383 pistons in the 426 that are in there now are about .200 in the hole. I spoke with Dave at Hughs Engines and he figured the correct flat top pistons that they sell at .030 over would come in at about .060 in the hole. With the 452 heads it should be about 9.1 to 1 compression. This is by his figures. This would be great for me being that the car is strictly a cruiser and for touring with the car club. He said I could do better by using a thinner head gasket.
I wonder if it would be better to use the 516 heads that I have on the shelf?
Thanks all, Alex



Either way you have no quench , the 452's will flow better than the 516's .