5.3 which heads ? Thanks
.96 ar exhaust . It's going to be completely stock 5.3 with 2-1/2 "crossover . My question is while removing the 862 heads to install MLS gaskets and head studs . Would I benefit by going with a set of good stock 853 heads from an old ls1 of mine ? I plan on trying to run around 10 psi . Does the 2" valve and drop in compression help ? The SONOMA is light weight . So I think a little power loss off boost won't matter much to me . Thanks
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