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Click on image for the lowdown. 
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Global Mod,
Mod | | | Forums66 Topics128,062 Posts1,055,847 Members48,428 | | 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: Mar 2008 Posts: 1,775 'Bolter | | 'Bolter Joined: Mar 2008 Posts: 1,775 | Sorry Denny, I meant,
why are you not suppose to use Delvac 50?
Just a brain fart.
I find it interesting that some of the old service manuals recommend SAE 40 and 50 motor oil for 3 and 4 speed trannys. From what you've said, it's not good. | | |
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