Hot Rod - - Ls3 Intake Shootout! -

The one thing we can count on when test­ing “all” the LS3 in­take man­i­folds is miss­ing one or two. Af­ter run­ning 20 dif­fer­ent LS3 in­take con­fig­u­ra­tions, we came across a cou­ple of strag­glers who were late to the party. Nat­u­rally, we wanted to in­clude both the Edel­brock Pro-Flo XT and the Per­for­mance De­signs Car­bon pTR, but this was eas­ier said than done. Un­for­tu­nately, be­tween the first round of test­ing and when the new ar­rivals showed up at the dyno, we had a prob­lem with our LS3 crate mo­tor. Dur­ing test­ing for an­other story, we got a lit­tle greedy with the rpm and man­aged to tag a few in­take valves. We were not able to get the prob­lem solved in time to run the two new in­takes, so we did the next best thing: ran them on an­other test en­gine. Rather than not in­clude them in the test, we com­pared them to the stock LS3 in­take on a larger 415 stroker (Wiseco forged in­ter­nals, AFR LS3 heads, and healthy COMP cam) we had sit­ting around. While you won’t be able to com­pare them to the oth­ers, you can still see how they fared against the stock LS3 in­take.

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