Sub-Frame mounting holes - Team Camaro Tech
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post #1 of 5 (permalink) Old Dec 17th, 01, 03:16 AM Thread Starter
Join Date: Jun 2001
Posts: 204

I need to fix the body mount holes (just the two closest to the firewall) and did a search here to get some info. I still have a couple of questions. Is there a template that will ensure I get the 1.50 inch hole in the right place? In my searches, someone mentioned some measurements for the placement of these holes, does anyone have these?

Last question, (for now), is there any problem with using new poly body bushings that are 1/2 inch shorter? We think that my father's 68 has these and the only issue is a little extra grunting to get the trans crossmember out. Any other problems?

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post #2 of 5 (permalink) Old Dec 17th, 01, 06:20 AM
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Join Date: Apr 1999
Location: La La Land, CA
Posts: 2,707

The Body by Fisher Chassis Manual has all of the dimensions you will need. This manual, along with the Assembly Instruction Manual, are the two best references you will ever own. Well worth $30.

You can expect problems with steering column alignment, fender bracing, hood clearance, or any other item that requires precision alignment between the subrame and body-mounted components. On a street car it's really not worth it.

The Red Beast
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post #3 of 5 (permalink) Old Dec 19th, 01, 03:30 AM Thread Starter
Join Date: Jun 2001
Posts: 204

Does anyone have the Body by Fisher manual & can give me some of the dimensions? I'm hoping to fix the mounts this weekend and can't get the manual in time.

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post #4 of 5 (permalink) Old Dec 19th, 01, 10:58 PM
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Join Date: Dec 2000
Location: Kentwood, MI
Posts: 8,097

The two mounts at the firewall have locator holes, one in the body and one in the frame. These two locator holes are about 3/8" diameter and in addition to being able to approximately align the frame and body with them, you could use them as a refernce point for a repair. If you use the prefabbed repair plates available from National Parts Depot, or similar, they will already have that alignment hole in it so you you could just line up the new repair plate with the old locator hole.

Hope this helps.


68 Camaro, 383 small block with TH350 trans. 11.98's at 111mph and never trailered.
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post #5 of 5 (permalink) Old Dec 20th, 01, 04:27 AM
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Join Date: Feb 2000
Location: Accord, NY
Posts: 4,815

First of all, but some plate steel and make your own patches. I bought enough for several repairs for $5. The kits are a waste of money and the holes are not that accurate. Then, it's easy to align the repair plate by putting it in place with your new 1.5" hole lined up over the rotted area. I did it by eye, sighting on the bolt hole, then had the plate welded.Once I had the desired alignment, I let the body back down so the repair plate was held in place while welding. I did this for all four rear mounts.

Rick Dorion
69 RS Conv,355,M20,4.10's and I don't worry about stone chips.
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