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NickP
11-14-2012, 08:49 AM
Some time back, several folks responded to a similar post I did requesting some dimensions. I was excited to receive some great help but in those help dimensions, I noticed some stark differences in the data received. I hate to impose, but if those of you out there with a 57 and no rear bumper in place have time to review this drawing and could post your findings, it would be a great help. I am trying to get this chassis to powdercoat.

Please notice on the drawing that for the dimensions to remain constant, please follow the drawing. I need "A" Horizontal and "A" Vertical along with "B" Horizontal and "B" Vertical. Please note the hole size as, Hole A and Hole B and Know GM Hole.

Many thanks in advance!

http://pic20.picturetrail.com/VOL1600/2283636/5293467/404633400.jpg

chevynut
11-14-2012, 04:04 PM
Do you really want the dimensions to the EDGE of the holes as shown?

chevynut
11-14-2012, 04:16 PM
A = 3/4" vertical, 5 1/8" horizontal
B = 1 11/16" vertical, 7 5/8" horizontal

I just measured this on a 57 frame I have. All dimensions are to the centers of the holes. Stock holes are 9/16" diameter.

NickP
11-14-2012, 06:15 PM
Do you really want the dimensions to the EDGE of the holes as shown?

For those with poor eyesight, edge to edge would be eaiser rather than guessing if it's in the middle.

NickP
11-14-2012, 06:17 PM
A = 3/4" vertical, 5 1/8" horizontal
B = 1 11/16" vertical, 7 5/8" horizontal

I just measured this on a 57 frame I have. All dimensions are to the centers of the holes. Stock holes are 9/16" diameter.

I had a template that I had done from a 57, got lost and I never recorded it. Your dims are well within what I just measured, thanks.