Welcome to Gwatney Performance Innovation!


Our Head Tuner Ryan Stevens was recently interviewed at LSX Monsters - check it out


Enjoy our highlight reel below - and see our YouTube channel for over 30 individual race videos from the event. YouTube Channel


Great article about a GPI LS3 build over at Engine Labs!

Engine Labs

Our Head Calibrator Ryan Stevens was recently featured in an online article about his personal build - a naturally-aspirated LS3 monster. See video below - but read the full article here.


ATTENTION - We are now shipping our custom LS3 Heads! - click here for more info!

Custom Cam Form

Gwatney Performance Innovation