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Click on image for the lowdown. 
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| | | Forums66 Topics128,074 Posts1,055,999 Members48,433 | | 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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| | | | Joined: Apr 2009 Posts: 431 Shop Shark | | Shop Shark Joined: Apr 2009 Posts: 431 | shows the 3 and 4spd breakdowns, but only shows the 3 as a closed unit. was the 4spd open? | | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | The 4 speed was built both ways. In 1/2 ton and 3/4 ton, it was closed, with the 3/4 ton only being closed to the carrier bearing. 1 ton was open from trans to differential.
Bill Burmeister
| | | | | Joined: Apr 2009 Posts: 431 Shop Shark | | Shop Shark Joined: Apr 2009 Posts: 431 | now why does their 'transfering drive momentum to the frame theory' change according to tonage? | | |
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