Frame dimension tolerances
Thread Starter
Heel & Toe
Joined: Aug 2023
Posts: 15
Likes: 0
From: White Plains, GA
Frame dimension tolerances
I am inspecting my C3 frame. I have all of the nominal dimensions but cannot find tolerances anywhere, other than a reference to +/-3/16" for "X" checking. This is out of an original GM Service manual; however, it does not give tolerances for any frame dimensions other than "X" checking.
Does anyone have tolerance limits for the various height, width and length dimensions for a 1969 coupe frame?
Does anyone have tolerance limits for the various height, width and length dimensions for a 1969 coupe frame?
Melting Slicks
Joined: Aug 2001
Posts: 3,050
Likes: 124
From: Wichita KS
I am inspecting my C3 frame. I have all of the nominal dimensions but cannot find tolerances anywhere, other than a reference to +/-3/16" for "X" checking. This is out of an original GM Service manual; however, it does not give tolerances for any frame dimensions other than "X" checking.
Does anyone have tolerance limits for the various height, width and length dimensions for a 1969 coupe frame?
Does anyone have tolerance limits for the various height, width and length dimensions for a 1969 coupe frame?
Welcome to Corvette Forum!
I do not have dimensions for a 1969 frame. A frame repair (straightening) shop should (I hope) have a "Tru-Way Frame Specification" (Lansing Michigan) book that covers your year.
I've attached images of frame information for my 1980 as an example of information from that publication. Your 1969 will be different.
Tolerances likely will be similar, this pub shows plus/minus 1/8 inch.
Mapman
