Click on image for the lowdown. 
====
| | |
1 members (sron48),
104
guests, and
2
robots. | | Key: Admin,
Global Mod,
Mod | | | Forums66 Topics128,154 Posts1,056,856 Members48,456 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Aug 2015 Posts: 60 Shop Shark | | Shop Shark Joined: Aug 2015 Posts: 60 | Need help finding the correct bolts for mounting the parking brake assembly to the transmission. Can someone advise the size and pitch of these?
Steve
'46 Chevrolet 1/2 T. Pickup, survivor - sold
'31 Ford Model A pickup
| | | | | Joined: Jun 2011 Posts: 5,096 Crusing in the Passing Lane | | Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | Most bolts into Ci are coarse, next time you go to your hardware store, get some misc, bolts and mark their sizes, then use them for testing. I bet most parking brake bolts are 5/16-18 or 3/8-16.
Ed
Last edited by EdPruss; 10/29/2016 3:08 PM.
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
| | | | | Joined: Aug 2015 Posts: 60 Shop Shark | | Shop Shark Joined: Aug 2015 Posts: 60 | Thanks, Ed. I was hoping someone would have the exact size. But if I can't find it out, I'll have to try your suggestion.
Steve
'46 Chevrolet 1/2 T. Pickup, survivor - sold
'31 Ford Model A pickup
| | | | | Joined: Apr 2007 Posts: 1,038 'Bolter | | 'Bolter Joined: Apr 2007 Posts: 1,038 | Make sure your bolts are not too long. The threaded hole in the boss on the transmission case is blind. If the the bolt is too long and you tighten the bolt and bottom it out, it will break the boss free of the case. At least that is the case on the 4 speed transmissions I have for my '37 and '42 where the bosses for the tranny and pedal bracket are broken on some of my extra trannys. I don't know the length but just measure the hole depth and thickness of the brake mount along with thickness of the lock washer and be sure that bolt isn't too long.
Kent | | | | | Joined: Aug 2015 Posts: 60 Shop Shark | | Shop Shark Joined: Aug 2015 Posts: 60 | I have tried several bolts. Looks like 3/8 is the diameter, but the only pitch I can find is 16, and 16 does not fit.
Steve
'46 Chevrolet 1/2 T. Pickup, survivor - sold
'31 Ford Model A pickup
| | | | | Joined: Jan 2015 Posts: 914 'Bolter | | 'Bolter Joined: Jan 2015 Posts: 914 | Find a real hardware store 3/8th's come NC and NF (SAE),
Jeffrey | | | | | Joined: Aug 2000 Posts: 1,438 'Bolter | | 'Bolter Joined: Aug 2000 Posts: 1,438 | My NAPA store has a fair bolt selection. Might try that.
Dennis
40 Chevy 1/2 ton
| | |
|
|
