4.0L Head Swap on a Jeep 258 4.2L Engine

What you need to install a HO 4.0L cylinder head on your older Jeep inline-six engine.
Parking Lot Engine Problems at 2016 Moab Easter Jeep Safari

4.0 head swap on 258

Details of an Eagle 4.0 swap - Jeep Strokers

4.2 vs 4.0 Engine Swap Jeep Wrangler TJ Forum

Rebuilding a 4.0L Jeep Straight Six to 242HP : Engine Power

Jeep 258 Intake on a 4.0????? - Jeep Cherokee Forum

JEEP AMC 258/4.2L L6 1981-1985 Remanufactured Engine

wiring harness for a 258 to 4.0 (top end) swap?

Titan 4.6 / 4.7 Jeep Stroker Engine Works for all Jeeps with a 4.0 Engine, This is the workhorse of the Titan Engines Stroker line. This is the most

Titan High Performance JEEP Stroker Engine 4.6 / 4.7

Diesel SD33T NV4500 SX4 - AMC Eagle Den Forum

6cyl valve cover compatibility ? - The AMC Forum