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#12793 02/07/2004 6:27 AM | Joined: Sep 2003 Posts: 50 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2003 Posts: 50 | Anybody aware of differences in the standard three spd trans for light duty 1/2 ton 3100s from 1953 to 1954?
I went a looking for a new torque-tube u-joint and the Truck and Car shop couldn't make up their own minds as to whether or not their advertised 47 to 53 u-joint would fit a 54 trans. The manufacturer's book said 47 to 54 but their catalogue said only to 54. Comparing them the short yokes appear to be machined differently. Are there other changes like counter gear shaft diameter or teeth counts or anything? | | |
#12794 02/07/2004 6:28 AM | Joined: Sep 2003 Posts: 50 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2003 Posts: 50 | Strike that! Their catalogue says only up to 53! | | |
#12795 02/07/2004 1:29 PM | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | Chevr aulait,
The u-joints from '47.5-'54 are the same for three speed transmissions (4 speed u-joints are different from the 3-speed but are the same from '47.5-'54).
The '53 and '54 standard commercial 3-speed have a few different internal parts from earlier years but the splines on the rear of the main shaft are the same for all years.
Tim | | |
#12796 02/12/2004 3:51 PM | Joined: Sep 2003 Posts: 50 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2003 Posts: 50 | Thanks for the response! The output shaft yoke on the new replacement looked sufficiently different from my origianl to scare me off and reuse the old one with a new torque tube yoke and trunion. So the 53 and 54 three spd trannies are the same on light duty trucks. You say there are differences between the "commercial" and the "earlier" trans. Was that earlier passenger three speed or light duty truck? I wonder if the three sped light duty truck and passenger applications were the same. Anyone care to weigh in for me. I appreciate it as I am looking for a new synchronizer gear too. | | |
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