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Click on image for the lowdown. 
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| | | Forums66 Topics128,074 Posts1,055,911 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: Oct 2003 Posts: 5,152 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Oct 2003 Posts: 5,152 | Are you asking about a Saginaw 4-speed? I have this information for determining which one it is, but not year and application.
Saginaw 4-speed
Grooves 1st 2nd 3rd 4th Notes:
0 2.85 2.02 1.35 1.00
1 2.56 1.81 1.37 1.00 Third gear on cluster has 25 teeth
1 2.56 1.81 1.44 1.00 Third gear on cluster has 21 teeth
2 3.11 2.20 1.47 1.00
3 3.50 2.48 1.65 1.00
This is in phone note form for identifying them at swap meets.
1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble... | | |
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