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Old 03-25-2010, 08:20 AM   #12
jgreene0717
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Join Date: Sep 2008
Location: Wetumpka, AL
Posts: 152
Re: 71 C-10 Big Block Swap

Quote:
Originally Posted by Autometer View Post
What mount bracket is that? Will it let you go 3" back?
The mounts came from performanceonline.com. In small or big block applications they are made to mount in the forward holes on frame rails. You can use them in the rear most holes on frame for small block installation but the big block will not due to coming in contact with firewall. I moved it back as much as possible form front holes on frame and just redrilled the frame and crossmember to accept new location. It is back 1"1/4 from that point. In order to go back 3" you would have to modify firewall.
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