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Click on image for the lowdown. 
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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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#26595 04/10/2005 6:33 PM | Joined: Nov 2004 Posts: 1,552 Shop Shark | | Shop Shark Joined: Nov 2004 Posts: 1,552 | On the left side (drivers side) of case below power take off or stamped on tag, retained by the two rear power take off screws. I looked up the numbers on mine in the 1960-1966 Chev/GMC Truck Factory Assembly Instruction Manual. I have a SM420 manufactured at the Muncie plant in Muncie, Indiana. Best of luck with identifying your tranny. | | |
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