Lt1 Engine Swap Wiring Harness. All PSI Harnesses are Made in the USA. These harnesses include the Gen II LT1LT4 Gen III 24x LS1LS6 and Vortec Truck Engines as well as Gen IV 58x LS2 LS3 LS7 Vortec and GEN V LT ECOTEC3 Engines.
We offer LS LT swap harnesses for all Gen 3 4 and 5 LS LT engines including LS1 LS2 LS3 LS6 LS7 LSA LS9 Gen 5 V8 LT1 LT4 LQ4 LQ6 L99 Vortec. If youve acquired an LT1 LSx Gen 3 or 4 or Gen 5 LT1 L83 L86 style engine that came with a wiring harness on it and you feel that the length of the harness to the ECU and the look of the harness will work fine for your project then we can simply modify it to be a stand alone engine management harness. Please let us know if you.
We do everything we can to provide you with the most current and up to date diagrams.
All PSI Harnesses are Made in the USA. Howell EFI introduces their new LT1 2014 swap wiring harnesses for General Motors 48-62L Truck Corvette Camaro Direct Injection Small Block V8. PSI sells Standalone Wiring Harnesses for GM Gen II III IV V LSLT based engines and transmissions. LT1 was installed with a stock 1995 PCM and wiring harness I modified for the swap.