Join Date: Jan 2001
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Re: TJ 4.0 in a 4.2 YJ
Many poeple spend the money and stick the 4.0 head and EFI on the 4.2. The 4.2 has a longer stroke, and I beleive it is capable of producing a better torque curve with the EFI and 4.0 head.
If you do a search, you will find many topics on this.
...One New Car, A Few New Parts, A Lot More Scars...
89 FSJ - 6-inch Rustys kit, XTerrains 33"S
87 YJ - 5" of lift, 33BFG"s. ARB snorkel. Borla Header.