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Old 08-16-2023, 08:58 AM
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Aluminum Chief Aluminum Chief is offline
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Default Z

In 67 Z was for HO & X is Ram Air.

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Old 08-16-2023, 12:28 PM
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Quote:
Originally Posted by Aluminum Chief View Post
In 67 Z was for HO & X is Ram Air.
Nope, mine are stamped O. 400HO/auto. IIRC, your HO is a stick? 744 needs more spring, enter the X.

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Old 08-16-2023, 07:12 PM
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Ed, your heads are what is original to the WT engine?



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