Engine Swaps Matrix

A bigger engine is the most expensive way to make your Jeep faster, and the one most likely to stall in your driveway half-finished. This matrix lays out what each common donor actually costs, what it bolts into, and what bites first-timers — donor by donor, with honest numbers. First up: the four engines people drop into Jeeps most.

Costs are 2026 DIY estimates and swing hard with your region, your donor's condition, and how much fab you farm out. Treat every figure as a starting point, not a quote.

Pick a donor engine

The donor bench covers the Jeep, Ford, GM, and Toyota families — 4.0L stroker, 5.7/6.4 Hemi, GM LS3, Ford Coyote, Godzilla, and 5.0 Windsor, and the Toyota 1GR-FE, 2UZ-FE, and 1UZ-FE. The recipient grid shows all compatible donors for each platform — XJ through Land Cruiser — with fitment ratings and mounting notes. The cross-fitment grid puts every donor and every recipient on one screen, so you can see at a glance which swaps bolt in, which need a vendor kit, and which mean cutting metal. Paired with the Lift vs. Tire Fitment Matrix and the Parts Compatibility Validator.