My guess is it’s the same used on the ‘37 Chevy? If I get out to my shop today, I’ll try to remember to get info from my truck. Off hand my suspicion is it’s an 8/32? NO! After checking with gauge, tap and die, the one on my ‘37 is a 6/32.
Last edited by 46Sparky; 06/08/2026 5:32 PM.