Re: 69' amx
Jeff,
Wasn't the issue, that the 70 'dog-leg' exhaust port design flowed
better than the 69' exhaust port design, and AMC wanted to get them out there (supposedly an additional 25+ HP) over the 69' heads.
And that the 70' heads were to be prepped by Crane (ported and tricked-up).
AMC wasn't about to build 50 more 1970 Super/Stockers, so they
offered the 70' upgrade kit for the 69 S/S cars, so they could utilize the newer and better flowing Crane-prepped 70' heads.
The 70' 'dog-leg' Crane heads would not be legal for the 69 s/s cars, but would be legal for 70' S/S cars
Of course, NHRA put the 'kibosh' on the up-grade kit.
Paul
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