Thinking of putting 2003 Chevrolet Trailblazer 4.2 L engine in 1981 GMC Sierra. Complete 2003 Trailblazer donor vehicle. 1981 GMC has a small block 305 and 3.42 rear-end. What wiring issues will I incur swapping the engine over? Any other concerns?
Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. It only takes a minute to sign up.Sign up to join this community