66 Corvette front bumper bolt sizes

[Ken Harants]

Is there a publication that list the bolt sizes used for the front bumpers and braces on my 66 Corvette? If not, does anyone know the sizes?

[Kent K.]

Re: 66 Corvette front bumper bolt sizes

Ken ---- If they are the same as '67, my records are as follows:

Rear Bumpers - outer & inner brackets
7/16" - 14 x 1 3/4" w/ plain washer & 7/16" - 14 nut (RSC or RBW)

Rear Bumpers to brackets thru body
7/16" - 14 x 1 1/4" w/ flat & lock washers (RSC, UR & C)

Rear Bumper to Brace
7/16" - 14 x 1 1/4" w/ plain washer & nut

Front Bumper Inner Brackets to X-member
7/16" - 14 x 1" (TR)

Front Bumper Outer brackets to frame
7/16" - 14 x 1 3/4" w/ plain washer

Front Bumper to brackets thru body
7/16" - 14 x 1 1/4" w/ flat & lock washer (M)

All were cad plated. Some shims were used for adjustments. Bolt manufacturer's logos found on my '67 are in parentheses.

Hope this helps,
Kent #6201

[Kurt B.]

Re: 66 Corvette front bumper bolt sizes

The GM Chevrolet parts book lists the sizes, part numbers, and has illustrations.
Kurt