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| | | Forums66 Topics128,053 Posts1,055,777 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
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| | | | Joined: Jan 2015 Posts: 39 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2015 Posts: 39 | Pressure testing oil galleries is a difficult, complicated process and is usually done on a bare block after a thorough cleaning. It's necessary to plug as many leak points as possible, such as main bearing oil holes, etc. I use a piece of gasket material sandwiched between the crankshaft main bearing journals and the block and a few other sneaky tricks, then apply 50-75 PSI air pressure to the system, fill the block with water, and look/listen for leaks in the cooling passages. I don't know of a simpler method to find that kind of a leak.
Jerry what he said!
Tim White
49 Chevy panel
91 Jeep YJ
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