1979 Corvette Seats
Race Director
Joined: Mar 2016
Posts: 14,348
Likes: 8,158
From: Napa Valley California
Some bolt sizes are called out in the AIM and most are called out in the Parts and Accessories Catalog, at least they are in my 73 manuals.
If nobody replies, you might want to look there for starters.
If nobody replies, you might want to look there for starters.
Race Director
Joined: Nov 2006
Posts: 13,197
Likes: 7,795
From: Sunshine Coast, Queensland, Australia
2025 C3 of the Year Finalist - Modified
2024 C3 of the Year Finalist- Modified
2022 C3 of the Year Finalist - Modified
Cruise-In VIII Veteran
Can't you just grab a couple random bolts, see what size just threads in easily. Calculate the length you need?
Perhaps start with 5/16 course (5/16ths 18).
grade 5
Perhaps start with 5/16 course (5/16ths 18).
grade 5
