Ultimate Jeep 4.0 Turbo Kit Guide
The 4.0 straight-six AMC engine inside many late-’80s through early-’00s Jeeps was one of the best Jeep motors ever. It was extremely reliable, had great performance for its time, and was capable of taking the Wranglers and Cherokees it was inside anywhere. Still, it is woefully underpowered by today’s standards. With the 2023 Wrangler V8…