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Click on image for the lowdown. 
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8 members (klhansen, Shade Baby, Shaffer's1950, JW51, Cosmo, Oswald, 2 invisible),
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Global Mod,
Mod | | | Forums66 Topics128,075 Posts1,055,919 Members48,429 | | 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: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 |
So that no one gets concerned about having lower oil pressure on a 261, the 1958-61 261 spec is 30 psi at about 1200 RPM on a warmed engine.
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