Project Overview
This 6.2L LS3 build was developed to replace the LS6 in KTR’s 2002 Corvette Z06, with future plans for forced induction. Starting with a brand-new GM LS3 block, the engine was sent to Golen Engine for machining, forged internals, and a 24x crankshaft reluctor conversion—allowing the Gen 4 LS3 to communicate seamlessly with the factory ECM. The assembly was completed in-house at KTR Performance and initially installed with a naturally aspirated cam before being reconfigured for boost and paired with a Magnuson Heartbeat Supercharger Kit.
Engine Specs: 6.2L LS3
- Block:
- Brand-new GM LS3 (machined by Golen Engine)
- Crank:
- Stock GM with 24x reluctor conversion
- Pistons:
- Wiseco Forged
- Cylinder Heads:
- Flotek
- Camshaft:
- Lingenfelter Performane Engineering GT9
- Induction:
- Magnuson Heartbeat Supercharger Kit
- Rods:
- K1 Forged
- Est. HP at Flywheel:
- TBD (post calibration)
Build Details
Short Block: The foundation is a brand-new GM LS3 block machined by Golen Engine for forged components. The crankshaft shaft was fitted with a 24x crankshaft reluctor wheel to ensure compatibility with the factory C5 ECM Forged internals were used throughout for strength and reliability under boost.
Camshaft & Valvetrain: The engine was initially assembled with a naturally aspirated camshaft profile for baseline testing. Once ready for boost, it was reconfigured with a boost-specific cam grind designed to complement the Magnuson Heartbeat system.
Induction & Management: Forced induction is handled by a Magnuson Heartbeat Supercharger Kit, chosen for its OEM fitment and efficient intercooling design. The factory ECM remains in use, tuned to support the 24x conversion and supercharged setup.
Assembly & Integration: All final assembly was performed in-house at KTR. The completed engine was installed into the 2002 Corvette Z06, creating a modern, high-output LS platform with OEM drivability and strong potential for further tuning.
Dyno / Notes: Final tuning and dyno testing will be performed on KTR’s Mainline ProHub Dyno after break-in and calibration. Estimated figures to be provided after final testing.
