GMHTP: LS1 Gets a 480HP Upgrade
Posted by GM High Tech Performance on May 25th 2026
This article details the process of swapping an LS1 engine for a more powerful LS3 in a 2001 Z28 Camaro. While the swap itself might seem straightforward, the electrical differences between the two generations of engines present significant challenges.
The author overcomes these hurdles with the help of LPE's conversion module, which simplifies the wiring harness compatibility issue. Other upgrades include a new clutch, wiring harness, and motor mounts. The end result is a substantial power increase and improved performance without sacrificing drivability.
Overall, the project is a success, delivering a thrilling driving experience while maintaining everyday usability.