Results 1 to 3 of 3
-
07-09-2008 #1
Registered User
- Join Date
- Jul 2005
- Location
- Eastern Virginia
- Posts
- 3,963
GM Upper A arm bolts. Fine/course thread?
Which is better, fine or course thread?
Thanks
Scot
86 Monte SS
-
07-09-2008 #2
-Moderator-
- Join Date
- Apr 2001
- Location
- Central CA USA
- Posts
- 6,114
From a strength standpoint, fine is stronger. But coarse bolts are what the factory used, and it's easier to back them off for alignment. I think that coarse bolts are plenty strong, as long as they are Grade 8, they are usually 1/2" bolts on later models, but first gen Camaros have 7/16" coarse bolts and they work, but are probably getting close to the limit. I'm in favor of double nutting the bolts for hard use.
Hey, I thought I was going to be at Road America next week for the B.R.I.C, but I had to cancel out. It's Lola's 50th Anniversary!
DavidLast edited by David Pozzi; 07-09-2008 at 02:25 PM.
David Pozzi http://www.pozziracing.com67 Camaro RS that will be faster than anything Mary owns.
07-09-2008 #3
Registered User
- Join Date
- Jul 2005
- Location
- Eastern Virginia
- Posts
- 3,963
I bought fine & put them on one side & then wondered if it made a difference. The A arms themselves are adjustable, so no need for shims.
ThanksScot
86 Monte SS
Reply With Quote
