Start getting the most out of every GPI purchase you make. As a myGPI member, you can cash in on exclusive benefits that make shopping with us even more rewarding.

Top Seller Camshafts GPI – High Lift LS Camshaft (4.8L / 5.3L / 6.0L / 6.2L) From: $ Select options Camshafts & Valvetrain GPI – LT1 / L86 / L83 Turbo Camshaft

These cams have become the benchmark for 6th Gen Camaro’s / C7 Corvette’s. Our GPI Cam and Head packages have been dominating race tracks, and taking 6th Gen Camaro’s & C7 Corvette’s …

Explore high-performance automotive products and parts tailored for enhancing vehicle performance at Gwatney Performance's online shop.

Custom ground camshafts and cylinder heads have become a mainstay at GPI – especially for the LTx and LSx motor platforms. We specialize in supercharged, turbocharged, and nitrous projects – and …

The new MAX Performance Package works great with OEM-style manifolds and offers a true, 100% plug-and-play “install in your garage” solution while returning with big, custom NA build results.

This tune file is designed to get your vehicle started and running safely – but we still want to make some changes to optimize both performance and drivability.

Our GPI Camshaft and Head packages have been dominating race tracks, and taking Camaro’s and Corvette’s deep into the 10 second range for customers all over the country.

LT1 / LT4 / L86 Cylinder Heads GPI – Ported OEM LT2 (Gen V) Cylinder Heads Package From: $1,095.00 Select options

We have 5 different iterations of this very popular cam (and the option to do a custom spec cam) – from mild performance increase with nearly stock manners, to all out N/A race applications.