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.