d k
Well-Known Member
Good to know
I bought a prototype aluminum head at a swap meet last year - all-AMC event, races, show, swap meet, etc. It was one of three made. I know one of the others is on a 4.0 in a Grand Cherokee (ZJ or WJ, can't recall) - the guy was wondering about the head. He bought the Jeep for the engine, I think. Anyway, no one could ID it then after I bought mine, I recognized the pictures of his as being one of the prototypes.
Clifford Research had them made but the heads didn't help the low end and torque like they hopes. The power gain was higher in the RPM band than they wanted so they dropped the project.
When I bought the head it even came in the original Clifford Research box.
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