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Mod | | | Forums66 Topics128,089 Posts1,055,988 Members48,430 | | 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
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#59149 04/13/2006 3:37 AM | Joined: Apr 2006 Posts: 4 Junior Member | | Junior Member Joined: Apr 2006 Posts: 4 | I have a GMC 550 that was factory equipped with a hydramatic (the emblem is on the hood), but the trans was removed many years ago. It has an auxillary hi-low gearbox that was mounted (divorced) behind the trans that is still in the truck. Does anyone know about these large truck hydramatics? What were the specs on this trans, and was it similar to the smaller truck autos or not? | | |
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