beautiful day for a head swap
johnnyreb
Old Time Jeeper
- Posts
- 1,470
- Media
- 17
- Thanks
- 1
- Location
- tn
- Vehicle(s)
- 1980 cj5 258ci straight 6, 31x10.50's. Partial Teamrush iginition upgrade, MC 2150 Carb. 4.0 head swap, factory header. I call him "Eugene".
Dad's jeep when he raced in the 70's. Cj2 running gear, ford 300 cu in 6 cyl with 3 deuces. Fiberglass model T body and hand laid fiberglass hood. welded 5.38 gears and beer keg fuel tank. see avatar
Wife's: Black 04' Liberty with all the bells and whistles.
Last two days have been sunny and mid fifties here in TN. So I decided friday to pull the stock AMC 258 i6 / 4.2l head and finally drop the rebuilt 4.0 head that been waiting months. The removal was pretty easy and straight forward, although heavy and awkward working alone. Lucky me, my AMC 258 i6 / 4.2l came with 1/2" head bolts factory so no shims required. Used 1/2" all thread for alignment pins. Started to install head bolts only to realize that 4.0 bolts are shorter on the side under the valve cover, little tip for others to watch when swapping heads. Now to finish bolting on the other items. Looking forward to seeing the power difference.
Anybody know if the AMC 258 i6 / 4.2l push rods will work or do I need the 4.0 push rods?
Anybody know if the AMC 258 i6 / 4.2l push rods will work or do I need the 4.0 push rods?