Slant 6 sitting for over a year after rebuild

mpgmike said

I built a Jeep 4.0-to-4.6 stoker about 6 years prior to actually installing it. I used assembly lube, didn't add oil to the pan. When I installed it, I thoroughly primed the engine to build oil pressure. I have about 2k miles so far and no issues. This included a new Comp Cams camshaft & lifters. Just pre-lube it.

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A Jeep 4.0 like most "modern" engines has pressurized oil to the cam/valvetrain. The /6 doesn't.

It's like saying "I went out and put a battery on my 4.0 Jeep after it sat for 6 years, turned the key and it started right up."

Yeah, it's got an electric fuel pump and efi, etc. Not a mechanical fuel pump that's going to have to crank a while before it fills the float bowls with fuel, no choke, etc. Apples and oranges...