Difference in X heads & J heads

Waco Demon said

Is there a difference in the combustion chamber between X & J heads .I know the intake valve in the X head is larger . Harold

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There is a difference in combustion chamber between a J head and another J head, all in how they were cast. X heads had 2.02 intake valves, some J heads had 2.02 intake valves, some had 1.88.