The catalogs recommend 3/8 which is prob what GM used. Any of you guys install a windshield lately? I just don't want to use the larger stuff then have an issue getting the trim on.

Thanks Chris

How timely, we just did the windshield on our 72 this past weekend.
5/16 if putting the factory glass back in.
3/8 if using aftermarket reproduction. they are thinner!?
this was confirmed by the old timer at our local supply house.
and he was right.
dont forget the cleaner & primer..

How timely, we just did the windshield on our 72 this past weekend.
5/16 if putting the factory glass back in.
3/8 if using aftermarket reproduction. they are thinner!?
this was confirmed by the old timer at our local supply house.
and he was right.
dont forget the cleaner & primer..
Right on. That's my experience too. If a replacement WS, use 3/8" ribbon. 5/16" with replacement WS glass will leave a gap between glass and trim. The replacement rear glass that I've had however, was the same thickness as factory original and required 5/16" ribbon for proper trim fit.

Thanks guys, it is aftermarket so I will try the 3/8".
Chris