we did some modest exhaust port work, but the only OEM internal engine part we replaced was the cam shaft. The custom thicker head gaskets with longer head studs helped lower the compression ratio sufficient to avoid BBQ pistons. ProCharger actually was reluctant to sell us an LS7 impeller and head until they came to our shop and went for test run with Gil because they had [or knew of] 2-3 engines that came unraveled using their original LS7 kit. The success of this supercharged LS7 is mainly due to the dozens of hours Gil spent remapping/tuning the factory ECM on the dyno to cohabitate with the blower. We're a ProCharger dealer, and unless things have changed recently...they don't/won't offer a supercharger kit for the LS7 Vettes presently. We've heard rumor of other shops success at supercharging the LS7, but have so far been unable to verify/confirm. It truly is a monster and never seems to run out of power...thankfully, the 345mm tires break loose before much risk of tranny/clutch failure. It sounds great and behaves well at the stoplight idle with the A/C going, but INSTANTLY comes to life at the touch of throttle. I'd venture to bet there are very few smog legal street cars out there that want anything to do with this Vette.
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