I built my 4.6 stroker with the 92 head. Now I have an opportunity to get a head from a 2000 Grand Cherokee, any advantage to the newer head? valve size, runner size ( I already have the newer intake and mustang TB)
thanks
Does head choice matter?
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Re: Does head choice matter?
Others may have better info but the 7120 91-95 head is often considered superior to the later 0331 casting found on the 2000. Exhaust port differences between them and the 0331 non-TUPY are known to be crack prone.
Consider the coil pack mounting. You will have to make a bracket to mount the coils on the 7120.
The ECM doesn't care as the multiple drivers for the coil pack are the same part # as the single coil driver.
My OBD2 converted YJ uses a coil pack ECM that was tuned by Chris Jensen.
Again, others may have more or better info but this is my understanding.
Consider the coil pack mounting. You will have to make a bracket to mount the coils on the 7120.
The ECM doesn't care as the multiple drivers for the coil pack are the same part # as the single coil driver.
My OBD2 converted YJ uses a coil pack ECM that was tuned by Chris Jensen.
Again, others may have more or better info but this is my understanding.
- SilverXJ
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- Vehicle Year: 2000
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Re: Does head choice matter?
2000 0331? Possibly a non TUPY head. Wouldn't touch it with a stick.
2000 XJ. 4.6L stroker
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00+ Viper Coil Swap | CPS Timing Increase Mod | Fabricated Airbox | Dash bezel, Arduino Multigauge & RD Conceal
Eat, breath, drink, sleep, Jeep, drink
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