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Re: 1954 GMC 350 Hydromatic tclederman #943359 05/15/2013 10:07 AM
Joined: Jan 2013 Posts: 1,384 MA J Jim Sears Shop Shark
Jim Sears Shop Shark J Joined: Jan 2013 Posts: 1,384 MA	The twin hydromatic you describe sounds very much like the 6 speed Powermatic that Chevy used in heavy trucks from '54 on. It was described as 2 3 speed automatics on top of each other. Made by Allison. I'm looking for one that bolted to a 235/261.

Entire Thread
Subject	Posted By	Posted
1954 GMC 350 Hydromatic	Jrpontiac	05/13/2013 5:12 PM
Re: 1954 GMC 350 Hydromatic	Truckrolet	05/14/2013 5:39 AM
Re: 1954 GMC 350 Hydromatic	tclederman	05/14/2013 9:58 AM
Re: 1954 GMC 350 Hydromatic	51 ashton	05/14/2013 1:06 PM
Re: 1954 GMC 350 Hydromatic	tclederman	05/14/2013 3:09 PM
Re: 1954 GMC 350 Hydromatic	Mike B	05/14/2013 7:46 PM
Re: 1954 GMC 350 Hydromatic	tclederman	05/14/2013 8:22 PM
Re: 1954 GMC 350 Hydromatic	51 ashton	05/15/2013 6:27 AM
Re: 1954 GMC 350 Hydromatic	Jim Sears	05/15/2013 10:07 AM
Re: 1954 GMC 350 Hydromatic	Mike B	05/14/2013 8:47 PM
Re: 1954 GMC 350 Hydromatic	Truckrolet	05/15/2013 3:19 PM
Re: 1954 GMC 350 Hydromatic	Mike B	05/15/2013 10:16 PM
Re: 1954 GMC 350 Hydromatic	tclederman	05/15/2013 11:07 PM
Re: 1954 GMC 350 Hydromatic	Jim Sears	05/15/2013 11:30 PM

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