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Mod | | | Forums66 Topics128,080 Posts1,055,954 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
with Ads!  Again, thanks!
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#10523 03/07/2003 1:48 AM | Joined: Jan 2003 Posts: 4 Member | | Member Joined: Jan 2003 Posts: 4 | I've got a '54 chevy 1/2 ton with a 4 on the floor transmission and the torque tube drive shaft. It works well but I think it's showing it's age and needs some work.
On the top of the transmission it has the markings GM2 and 591568
On the side is's got 8761930
I'm not the most mechanical person around but have a great mechanic. Any help on identifing the model would be most appreciated.
Life without beer is like a broken pencil.... completely pointless.
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#10524 03/07/2003 4:17 AM | Joined: Feb 2001 Posts: 1,096 'Bolter | | 'Bolter Joined: Feb 2001 Posts: 1,096 | My parts catalog of the era says that all '48-'56 4 spd are the same number item, but it only lists the part #591703 , not the casting #.
Any one else got a different book ? | | |
#10525 03/07/2003 7:39 AM | Joined: Jun 2000 Posts: 2,773 'Bolter | | 'Bolter Joined: Jun 2000 Posts: 2,773 | I don't have a book, but if you go to the Nowak website they do have pictures and descriptions. If it's the original tranny, it should be the SM420, reverse is to the left and down.
Fred
52 3600
69 C-10
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