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Click on image for the lowdown. 
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Mod | | | Forums66 Topics128,030 Posts1,055,428 Members48,422 | | 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: May 2005 Posts: 8,878 . | | . Joined: May 2005 Posts: 8,878 | I don't have much info on the Watson, but tons on the Spicer auxiliary transmissions.
The best way to see what ratios you have is start turning the input, count both the input and output revolutions and divide.
Or count gear teeth and divide.
You will have a direct or 1:1 gear as one choice.
Grigg | | |
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