Quote Originally Posted by TXsilverado View Post
theres a few calculators on pt.net to figure out your true scr and dcr. im no expert on the matter. i just know that my numbers came out to what everyone on tech agreed was the limit for pump gas.

info youll need to find these numbers is the chamber size of you heads, gasket thickness and the cam specs and Lobe characteristics. then theres also some other numbers like how far the piston sits out of the chamber at TDC and crap like that. the calculator for ls1's is alot easier than the 4.8/5.3/6.0 cuz the guys on tech have picked it apart and made an excell sheet for us to use.
thanks stew, i'll check all this out the next time i pull heads which shouldnt be to far from now...