We do a lot more than GM engines here at TPiS and this is just one example of that. We have done extensive testing on these engines to ensure longevity in road racing situations, we have added additional cooling lines to keep all cylinders running at optimal temperatures with horsepower in the 450-550 range with moderate boost (15psi). These engines have Diamond forged pistons, ARP fasteners and thermal & friction coatings applied. The cylinder head is ported and stock cams are used.
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