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| | | Forums66 Topics128,037 Posts1,055,470 Members48,424 | | 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!
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Oct 2010 Posts: 11 New Guy | | New Guy Joined: Oct 2010 Posts: 11 | Does anyone know what the model number is or what it is refered to for the transmission in a 1940 1.5 ton truck. The casting number is 590474 SN#9088I33. It is a four speed with the thumb lock out for the reverse. I would like to find out any info so I can attempt to mate this up to my new 292 if at all possible. Any info would be great. Thanks. Matt
Last edited by tracermc; 03/26/2011 4:05 AM.
| | | | | Joined: Jan 2008 Posts: 4,961 'Bolter | | 'Bolter Joined: Jan 2008 Posts: 4,961 | I don't think there was any model number assigned to them. All I have ever heard them referred to is a GM sliding gear transmission because it uses sliding gears instead of syncros. The bolt pattern is different than later Chev or GMC transmissions. The only way it will bolt to a 292 is with some modification or with an adapter. | | | | | Joined: Oct 2010 Posts: 11 New Guy | | New Guy Joined: Oct 2010 Posts: 11 | that is all I have been seeing too. I've seen 420 and 435 but those are syncro transmission and they are a longer case. my case is only 9". Thanks for the help. | | |
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