If you own an '81-'90 4.2L (258ci)-powered Jeep, there's something lurking behind your local Mopar dealer's parts counter that will interest you. It's called the Mopar Performance Jeep 4.2 Liter ...
I have a 1984 CJ-7 with the 258 in it. I put a Howell TBI on it with a Davis Unified ignition on a fresh rebuilt motor. After 800 miles the number-6 piston melted, and that required another engine ...
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