Transforming a Corvette C8 with the GPI 625 Package!

Initial Assessment and Goals Our objective was clear from the start: to elevate the Corvette C8 and the LT2 platform beyond the standard power-adders, focusing on a naturally aspirated (NA) setup for consistent, reliable, robust performance without the additional weight and heat soak issues associated with forced induction. Dyno Testing: Establishing a Baseline With just […]

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 oil pump struggling to maintain adequate oil flow at high RPMs, particularly under hard acceleration with G Force opposing oil intake to the pump. This is due to a combination […]

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 several months the team has been working on improving a product that is already pretty darn good! But hey, at GPI, that’s what we do.  For those unfamiliar with the […]

Gearing and Converter Options for Camaro and Corvette (Part 2 – Automatic Cars)

INTRODUCTION Welcome back to Part 2 of our discussion on late model GM gearing and converter choices (want to read the Part 1 on Manual setups?  Click Here). This series is aimed to help answer the popular “which gear and converter should I run in my car” which populates social media and technical forums on […]

Gearing and Converter Options for Camaro and Corvette (Part 1 – Manual Cars)

INTRODUCTION: You don’t need to browse social media or a technical forum for very long to find a thread about “which gear (and converter – for the automatic crowd) should I run in my car”.   These discussions are usually plagued by a lack of key information about the car in question – which transmission it has, […]

Introducing our Brand New High Compression Dome Piston and Rods Kit for the LS3!

As GPI customers and GPI builds have become a force to reckon with in the naturally aspirated racing scene, we could not help but notice the lack of shelf piston options geared towards this environment. Staying true to our name, we contacted our friends at Diamond Pistons to set about designing a new piston. We […]

remote ls lt tuning

Remote Tuning for LS & LT Engines: Getting Started, Reading & Flashing Tunes, and Data Logging!

Remote Tuning for LS & LT Engines: Step by Step Guide Building a LS or LT powered vehicle and need tuning?  From bolt ons, camshaft & cylinder head upgrades, to big forced induction builds – tuning is a critical step throughout this entire process. It determines both how well the vehicle performs, drivability, and potentially […]

The Ultimate LS3 Intake Manifold Dyno Shootout!

We get a lot of questions about intake manifolds, and because our recommendations vary depending on use and application – we thought it would be helpful to conduct a series of tests which demonstrate the several available intake manifolds back to back on the same engine. We hope these results will help our customers better […]

GPI Heads to Bowling Green, KY for some CamaroFest IX Drag Racing!

We had such a great weekend at CamaroFest last weekend with all of our friends and customers – it was almost hard to come back to the normal grind! Thank goodness we love what we do! We headed down to Bowling Green on Thursday  7/11/19, to get our trailer and product set up for all […]

GPI Dominates Street Car Invasion at Newport Dragstrip!

Mike Pestka made Gwatney Performance Innovation proud this weekend at Street Car Invasion / Speedy’s Newport Dragstrip. Here is a highlight reel in case you missed it! Keep an eye out for some seriously sketchy passes by Mike Pestka and Matt Almond. They put on a great show for all!

2017 Camaro SS runs 9.69 @ 139 NA with GPI Track Attack LT1!

Had a great weekend at the Super Chevy Show. Brandon T. Hill II was able to rip off a [email protected] in his 2017 Camaro SS. The track was underwater when we got there and the crew at Memphis International Raceway busted their butts and got it coming around by end of day. While we couldn’t get that […]

Southern Outlaw: 2018 Season Award Ceremony @ GPI!

Rob Powell 2018 Points Champion Daniel Hughes Sportsman of the Year Daniel Hughes Rookie of the Year 2018 was another exciting season for Southern Outlaw Late Model Series.  We love supporting motorsport events and helping our friends win races all over the country. For those who couldn’t make it, here is a roundup from the 2018 […]

LS7 Valve Drop Issue. What you need to know!

It seems a lot of questions, concerns, information and misinformation exists related to the LS7 valvetrain issues.  We felt it might be helpful to our dealers and customers to summarize what we have learned over time about these issues. (Want to skip straight to our Ported OEM LS7 Cylinder Head Package?​) THE INFAMOUS CONCERN I just purchased […]

Huge L83 & L86 NA Head & Cam Performance Gains (+100rwhp!)

LT’s are the new LS’s! The performance truck market continues to grow at a staggering rate – with huge popularity going back to the early LS trucks. The L83 (5.3L) and L86 (6.2L) performance potential is especially promising due to these modern generation LT engines offering so much more power and technology than its predecessor […]

Introducing the GPI Track Tuned Program

We are very excited to introduce our new Track Tuned Program! Our Track Tuned Program was born out of our passion for racing, and our desire to push our customer’s cars to the absolute limits.  We break records when you break records.  We win when you win. Racing is all about having the competitive edge, and now […]

White Motorsports – 620HP MAX Performance LS3 Powered Buggy!

Want to go for a ride in this insane 620hp off road buggy? Check out the Dirt Riot Series point leading White Motorsports buggy – packing a GPI built 416ci LS3 – topped with our GPI MAX Performance LS7 Head and Cam package. Learn More about our MAX Performance LS7 Head and Cam Package for […]

Standing Mile Racing is Back in Arkansas!

Upcoming Event Location: Blytheville Gosnell Regional Airport 4701 Memorial Dr Blytheville, AR 72315 Event Date / Time: October 20th, 2018 7am – 7pm October 21st, 2018 7am – 1pm Want more information? Ready to push your car to the limit in a standing mile race?  Visit to register for the next race! Last Event

DRIVEN Synthetic Oil Change Packages Now Shipping!

We’ve been fans of Joe Gibbs Racing’s DRIVEN Synthetic Oils for years.  They have what believe is the highest quality & best value synthetic oil in the business, and most importantly – it is what we use on all new engines and shop builds.  If you want the oil Gwatney Performance uses and recommendeds – check out […]

Brandon Hill’s 6th Gen Dominated the Modified Class at Camarofest 8!

Ready for some CamaroFest 8 highlights?! Kicking it off – Brandon T. Hill II in his incredibly consistant 6th Gen. He ran 10.4’s-10.5’s all weekend long in 100 degree heat, AND was the fastest customer car in the Modified class With a personal best time of 10.1 @ 134mph – these new 6th Gens are becoming an […]

Breaking the 5th Gen SBE Record AGAIN!

Congratulations to Ryan Stevens for breaking the Stock Bottom End 5th Gen Record AGAIN! 9.87 @ 133mph in 3300 DA. This achievement didn’t come easy. After having traction issues all day Friday, we painfully watched the SBE record slip away to a competitor. Knowing that Ryan’s car had more in it – a group of our GPI […]

GPI’s Ryan Stevens Sets New SBE NA 5th Gen Camaro Record!

Congratulations to our own Ryan Stevens for setting the new Stock Bottom End NA 5th Gen Camaro Record!  After years of owning the 5th Gen NA record with his previous 416ci setup – he decided to reenter the Stock Bottom End ring.  In preparation for CamaroFest 2018 – he decided to start from scratch with a […]

Wild 200+ MPH Rides at The Ultima Mile 2018!!

There is no better way to prove your car, than a standing mile race! If watching 1k+rwhp cars being pushed to the absolutely limits (and sometimes beyond) is your thing – we have that in common! We had an incredible time supporting our friends, making new friends, and helping everyone push their cars to the […]

Solving the LT1 / LT4 Fueling Issues!

It’s a well known fact the direct injected LT1 / LT4 engines have fuel starvation issues at high boost levels – which leads to blown rings and melted pistons. We are developing a port fuel injection system system (similar to the new ZR1) utilizing the 42 Autosports Port Injection Control Kit and Haltech EMS to supplement the factory fuel […]

Bulletproofing the LT1 for Big Boost with GPI’s LT1 Drop in Piston / Rod Package!

Bulletproofing the LT for Boost The LT series GM engines are incredible powerplants as designed – however unlike their predecessor (LSx) – the LT’s commonly rebel when power adders such as superchargers, turbos, and nitrous are added. The LT powerplants have several weak links when boosted: Overcoming Limitations Understanding these limitations – and because GPI […]

Ultima Mile Racing coming to Arkansas – Register Here Now!

(Update) This event is complete.  Head over to ULTIMA Mile to check schedule and register for future events! Exclusive runway event that allows you to run your car flat out for a full mile.  Max 50 cars at the event, so you can run as often as you like. Mile Racing Details Event Location Ultima Mile Arkansas […]

Testing and Tuning the 620hp White Motorsports Buggy

#TeamGPI is proud to welcome our newest sponsor – White Motorsports (@WhiteMotorsports4878) and the 620hp GPI powered MAX Performance LS3 w/ LS7 Top End. This competition ready Jimmy’s 4×4 Bloodline Podium R is freshly tuned, and ready for the 2018 Dirt Riot Series Season which begins March 17th in Laredo, TX. Good luck this season […]

Lifters, Lash and Preload. What you don’t know won’t hurt you, or will it?

In speaking with our customers, and browsing various automotive forums – I have observed a lot of confusion and misinformation concerning hydraulic lifter operation and preload specification. I have concluded it may be helpful to provide some information on this subject. Anatomy of a Hydraulic Lifter A hydraulic lifter isn’t too complicated. It consists primarily […]

Chapter 2: Engine Dyno of the MAX Performance Package

THE ENGINE DYNO RESULTS ARE IN! 150HP MORE THAN STOCK LS3! Here is our latest testing of the LS3 / L99 MAX Performance Head & Cam Package. We’ve taken the goodness of the LS7, and adapted it to the LS3 / L99 platforms, to create a package that is the best of both worlds! The […]

(Available Now!) The Brand New MAX Performance Head & Cam Package for LS3 / L99!!!

After many months of working in secret – we are proud to introduce the GPI MAX Performance Head & Cam Package for LS3 / L99 applications! This package is not for the faint of heart. With a huge powerband, torque down low, and an explosive LS7 top end – this is a no-compromise NA build. […]

760 rwhp 6.2L Swapped Twin Turbo Sleeper 4WD Silverado!

This has been a very special build for us.  If you’ve ever dreamed of going absolutely crazy on a build, and making something absurdly fast that was never designed to – check this one out! Just imagine the look on that proud Z06 owners face when you demolish them from a light in an unassuming […]

Gwatney Performace LT Gen 5 Cam Packages are Officially Available!!

The Wait is Finally Over! For those of you with a 2016+ Camaro SS, or a 2014+ Corvette – we have our Gen 5 LT Cam Packages in stock, and ready to ship! Why GPI? Gwatney Performance has a long history with VVT Camshafts, and we have built a large portion of our reputation around them.  As many of you […]

Save $200 off Johnson ST2136LSR Lifters!