Aftermarket head -
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post #1 of 2 Old 01-09-2005, 07:31 PM Thread Starter
Matt Gertsch
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1999 XJ Cherokee 
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Aftermarket head

Does anyone know of any aftermarket head manufacturers that build 4.0 HO heads other than Hesco? I've tried Google, but didn't come up with anything. Thanks.

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post #2 of 2 Old 01-10-2005, 06:51 AM
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I think Hesco is it. I heard Clifford was looking into it, but nothing on that of late. Accurate Power does large valve conversions on the 4.0. Still, thats not a new head. What are you trying to accomplish? A good Port and polish and some other stuff will add plenty of power to the 4.0.
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