Don’t leave power on the table At GPI, we put hours of R&D into perfecting our Gen 5 LT CNC program for an end result of 320cc Intake Port Volume and 116cc Exhaust Port Volume. What does that mean for your build? ⬇️ -Improved cylinder fill in the lower RPM range for stronger torque where you need it most -Substantial airflow increases up top to keep pulling harder at higher RPMs -Over 30 HP gains in our testing while delivering better torque below the curve 3 week turnaround time, from arrival a
Don’t leave power on the table At GPI, we put hours of R&D into perf…
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GPI L83 (5.3) Custom Hi Ram Heads and Cam Package! 😍 | Gwatney Performance Innovation
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Behind the scenes peek at GPI, where our in-house CNC machines are putting in work—cutting, shaping, and perfecting our L83 cylinder heads to exact spec🤘 🛠️ Every pass matters. These aren’t cookie-cutter parts—we machine our heads with tight tolerances, consistent flow gains, and proven performance gains for street and strip use. 🔍 Why our CNC-ported L83 heads hit different: ✅ Increased airflow for LS/LT platforms ✅ Optimized combustion efficiency ✅ Designed for boosted or naturally aspirated
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Behind the scenes peek at GPI, where our in-house CNC machine…
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Your factory heads are leaving power on the table 👀 At GPI, we take OEM castings, machine in house, and make them do what they should’ve done from the start: move air. 💨 We put hours of R&D into perfecting our Gen 5 LT CNC program for an end result of 320cc Intake Port Volume and 116cc Exhaust Port Volume 💪🏽 What does that mean for your build? ⬇️ -Improved cylinder fill in the lower RPM range for stronger torque where you need it most -Substantial airflow increases up top to keep pulling har
Your factory heads are leaving power on the table 👀 At GPI, we tak…
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We Tear The L83 Apart And See What The Damage Ended Up Being.
We Tear The L83 Apart And See What The Damage Ended Up Being.
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