243s would help but defintly wont be a major change because you will have better flowing heads but you will be lowering your compression so it evens out, at least thats what happened to me lol hope this helps good luck
243s would help but defintly wont be a major change because you will have better flowing heads but you will be lowering your compression so it evens out, at least thats what happened to me lol hope this helps good luck
05 Silverado cc LQ9, 220 220 .581/.581 114+1 LSA, Pacesetters with Ory, TBSS Intake w/ 90mm TB, Comp roller Lifters, LS7 1.80 rockers, LS1 Heads, Transgo HD2, Vette servo, 160 stat, custom 3inch exhaust, and Nelson Tuned:
5400lbs- 13.62 at 100.46mph - Dynoed at 360rwhp - 375rwtq
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