1969 Big Block Motor Mount Brackets?

[red69]

I have a set of motor mount frame brackets that I bought from GM years ago. One has part #3980941 stamped in it and it measures 1 7/8" to the center line of the mount bolt when laid flat on the bench. The other one is not stamped clearly so I can not read the part # it measures 1 3/8" to the bolt center when flat on the bench. I bought these as a pair and was wondering if anyone could verify these measurements.

[ko-lek-tor]

This will help you somewhat on ID of correct mounts and showing you the part numbers you have and the application
http://www.camaros.net/forums/18-engine/36894-motor-frame-mounts.html

[bcmiller]

I have a set of motor mount frame brackets that I bought from GM years ago. One has part #3980941 stamped in it and it measures 1 7/8" to the center line of the mount bolt when laid flat on the bench. The other one is not stamped clearly so I can not read the part # it measures 1 3/8" to the bolt center when flat on the bench. I bought these as a pair and was wondering if anyone could verify these measurements.

The original part numbers for the frame mount brackets and the engine mounts can be found here at this link.
http://www.camaros.org/engine.shtml#EngineMounting

The part number you listed, replaced the original number for the 69 big block Camaro (and 1970 big block Nova) left side frame mount bracket (3950113) in October of 1970. 

The other part number on the other frame mount you have is probably 3980942.

I hope this helps.

[z28z11]

I have a set of motor mount frame brackets that I bought from GM years ago. One has part #3980941 stamped in it and it measures 1 7/8" to the center line of the mount bolt when laid flat on the bench. The other one is not stamped clearly so I can not read the part # it measures 1 3/8" to the bolt center when flat on the bench. I bought these as a pair and was wondering if anyone could verify these measurements.

I've got a couple of pairs of these NOS - I'll dredge these out tomorrow and measure them for you. Pretty sure your offset is correct as noted -

Regards,
Steve