street machines and comp/super class bigblock powerplants computer engineered ... engine permanent mold castings provide weight savings of 10 to 20 over traditional ... new designs optimized for today s bigger engines industry leading computational ... 2907 testing on a 540 standard deck bb chevy 14:1 comp rect port aluminum heads 1150 ... designed for today s larger cubic inch bigblockchevy race engines · standard ... deck manifolds will fit tall deck blocks with use of · perfect for hard core ...