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Mod | | | Forums66 Topics128,050 Posts1,055,648 Members48,426 | | 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!
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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: Jun 2021 Posts: 157 'Bolter | | 'Bolter Joined: Jun 2021 Posts: 157 | Today I did a test drive - after sitting for 10 years - with the 41 (62 rear end) and got a combination of a "clonck" and something like a short ratchet sound while breaking.
Brakes are working okay (not great though). I was filling up the fluid and bleeding them a week ago - any ideas?
Thanks, Frank | | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy Stovebold6, there could be rust on the drums braking surface, it will take a few stops to wear the rust away, good luck. | | | | | Joined: Jun 2021 Posts: 157 'Bolter | | 'Bolter Joined: Jun 2021 Posts: 157 | Turned out the main cylinder needs an overhaul. | | | | | Joined: Mar 2010 Posts: 1,660 Curmudgeon | | Curmudgeon Joined: Mar 2010 Posts: 1,660 | Most brake fluids, typically used in older vehicles, are hygroscopic (absorbs moisture).
Rust can develop in the master cylinder and migrate through the brake system.
At minimum, I would flush the whole system of old brake fluid.
A thorough brake job would include a cleaning or replacement of the wheel cylinders.
"Adding CFM to a truck will only help at engine speeds you don't want to use."
"I found there was nothing to gain beyond 400 CFM."
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