Jeep 4.0L vs 4.6L Stroker | Four Wheeler Network

Published on Four Wheeler Network 3/24/2020 by Christian Hazel

I am building a 4.6L stroker (4.0L with a 4.2L crank and rods) for my 1994 Cherokee Sport and would appreciate your experience and input on cam and valve spring choice. This is a daily driver, but while I had it apart, I decided to increase the cubic inches. The plan includes appropriate fuel injectors and a Gale Banks header to go along with the increased stroke. My first cam choice was the Comp Cams 68-200-4 but other suggestions include 68-232-4 to avoid engine code lights.

William D. Cutler
Via email

For starters, you’re correct in factoring larger injectors into the mix; the factory 19 lb/hr units might not be able to keep up with the needs of a hot 4.6L stroker. My 4.6L would technically run with the factory injection/calibration, but it detonated badly at anything over three-quarter throttle. I used Ford injectors from Accel—either 23 or 24 lb/hr, but I can’t remember. I also used a Hesco adjustable fuel pressure regulator and a Turbo City adjustable MAP sensor.