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The LT Wet Sump Engine Oil Pump Issue
Introduction: As we continue to push the LT engine platform to greater RPM and power levels, we have identified a common issue with the OE-style
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Introducing MAX Performance Package 2.0 for LS3 & L99 (HUGE 160+hp Power Gains for Bolt-On Setups!)
Package Highlights: Designing the best LS3 Head and Cam Package. We just can’t seem to leave things alone, and our MAX Package 2.0 is no exception! For
103MM Throttle Body on LS3 Intake Manifold. How Much Power?
One of the questions that we’ve often been asked by our customers is “Can I add a 103mm throttle body to my OEM LS3 intake
Melling Oil Pump Upgrade Guide for LS
The factory LS oil pump suffers from cavitation above 6,200 RPM, which results in a drop in oil flow of nearly 1 GPM by 7,000
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Gwatney Performance offers a Military Discount on most products to extend our gratitude to those who have served or are serving our country in the US armed forces.
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Recent Reviews
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The folks at GPI are both professional and very knowledgeable. I was treated fairly. All my questions were answered to my satisfaction. They will treat your baby as if it was their own. I was briefed every step of the way. It is apparent the fine men there are dedicated to satisfying the customer.
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GPI FTW simple as that. The customer service is the best. You can't go wrong with buying from these guys.
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These guys tuned my 2016 Sierra and after having it for about two days now, I absolutely love how it changed this truck. Better fuel economy, none of that sluggish GM shift points. 10/10 in my books and A+ customer service, I would trust these guys with any performance work that you need.
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Bought their ported/rod modded intake manifold for my 2010 Camaro SS L99 and holy crap, it's amazing! The porting looked well done and I am very impressed!
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Great customer service. Been bothering Dan for 3 days asking many questions, some over and over again, and he answered all of them like an expert. Bought 3.91 gears from them yesterday and will be going back shortly for a cam. Appreciate it fellas!
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Great people and great service.
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