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chris deforest
06-03-2008, 07:19 PM
79 trans am subframe cannot find any info on how to square up on body

80proZ
06-04-2008, 06:34 PM
There are two holes in the frame mounts that will line up with corrosponding holes in the body.I think its 5/8" rod that fits.I would also measure from the frame mounts to the front of the frame in a cross fashion.As in end of tape to your left,to the outside right of the frame.

WS6
06-05-2008, 05:35 AM
chris your post was replied to in the emergency room forum with two very good links. Did that not help you?

The two alignment holes are indeed 5/8". I found my 1/2" ratchet extensions to be close enough to 5/8" to work.

https://www.pro-touring.com/forum/showthread.php?t=44041

BA.
06-05-2008, 06:16 AM
yup, those guys are spot on.

I did mine slightly different though and measured diagonally from front subframe point to a rear frame rail, using plumb-bobs at each end. (basically a giant 'X' measurement.

The body mound plates at the firewall get you very close as stated.