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| | | Forums66 Topics128,035 Posts1,055,566 Members48,426 | | 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: Nov 2016 Posts: 13 New Guy | | New Guy Joined: Nov 2016 Posts: 13 | Hi, new here and have a question about my project.
I just got a big bolt GMC and not sure what it is yet(believe its equiv to a Chevy 6503) Anyhow, it has a diect/under aux tany between the Hidra-matic and rear axle. How do I find out what it is without any ID tags, only cast numbers on the case? Thanx for any help. Mark | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | A little discussion about the vehicle/transmission is in a earlier post/thread. | | |
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