69' amx

Paul Ceasrine · 06-24-2010, 08:25 AM

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

06-24-2010, 08:25 AM	#7
Paul Ceasrine VIP Member Join Date: Apr 2009 Posts: 2,546 Likes: 0 Liked 10 Times in 10 Posts	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