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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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| | | | Joined: Apr 2005 Posts: 2,832 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 2,832 | They have no spring and the mc cap is vented. My 34 Chevy has discs on all four corners, everything new and near zero run out so figured 2# residual pressure valves not needed--wrong. My porta power ram draws back but figured reservoir is not vented so vacuum is formed. Conversely the ram on my big press needs two strong springs to retract it. What's happening?
Evan
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