Budman68

Today I tackled one of the #4 mounts, rusted bolt, cracks in the fiberglass, and rusted out mounts. Considering it's the only rust on my car, I guess it's not bad. I purchased new mounts for the body, but I think I can save the frame mounts. There just rusted in the holes.

Can someone tell me the size of the hole in the #4 body mount bracket that is attached to the frame. The hole is rusted out and I thought I could rebuild it with some sheet metal.

http://www.zip-products.com/Corvette...3ED6636626C94B

Artsvette73

If you have the new rubber mount. Just measure the stepped portion that sits in the frame mount.

Vettkeeper

On my 78 frame I used a 3/4'' electrical knock out punch with an outside dia of 7/8'', I was a just a little tight. Also a 7/8'' hole saw would work.

BBShark

If you are talking about the big hole, it is 1 3/16 inches.

chris73cpe

1 3/16 is a tough size hole saw to find, I used a 1 1/8 with the intention of opening it up a little more to fit, but it ended up being the perfect size for the poly mounts I got

Budman68

That's what I needed to know. Thanks for measuring.

Budman68

Good point, I'll most probably do that and dremel it out to 1 3/16".