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Click on image for the lowdown. 
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| | | Forums66 Topics128,087 Posts1,056,375 Members48,442 | | 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 2012 Posts: 197 Shop Shark | | Shop Shark Joined: Jun 2012 Posts: 197 | It isn't loose in the bore, it's loose on the aluminum piston it fits on/over, and leaks between the two. It's the seal on the piston closest to where the master cylinder bolts to the firewall.
Some of my crap: 1963 C-30 flatbed dually 292/SM420 1965 C-10 LWB fleet 250/column shift 3 speed 1965 C-30 9' stepside 250/SM420/4.10 gears (my DD) Website I made for my crap: http://www.66submarine.com | | |
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