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Topic: '54 GMC six cyl hydromatic==any info?
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bj/w150/mt

10-22-2002 13:51:04
198.81.26.139
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Interested in any information/web site/resorces regarding a 1954 GMC half ton. Has a 248 inch six with a four speed hydromatic which I understand is quite rare. Any information on number produced or any other help appreciated.


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Ken Jensen

09-26-2006 08:48:11
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Re: '54 GMC six cyl hydromatic==any info? in reply to bj/w150/mt, 10-22-2002 13:51:04  
I just came acrossed your post I also have a 54 GMC Hydro-Matic. Perhaps we could exchange notes


Tks

Ken

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John Ne.

10-23-2002 10:28:49
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Re: '54 GMC six cyl hydromatic==any info? in reply to bj/w150/mt, 10-22-2002 13:51:04  
My neighbor had one, half ton with the hydramatic, there is no park on the quadrant? Had to pull it in reverse after shutdown, then the tranny would lock. They were fairly low production, I'd be checking on the GMC truck sites, collector clubs for more info. Oh yeah, don't try to put on Chevy six parts on this engine, don't believe anything will fit off a 235. John

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appreciate it==bj/w150/mt

10-23-2002 10:34:17
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Re: Re: '54 GMC six cyl hydromatic==any info? in reply to John Ne., 10-23-2002 10:28:49  
All of the GMC truck sites my search engine found were for current model years. Must be doing something wrong.

You are right about no park position. I think all of the four speed hydromatics with the low first gear worked that way. Took a little getting used to and will take a little rethinking but as I recall they worked fine that way.

For sure it is a totally different engine than the 235 inch Chevs.

Your mileage may vary

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Allan

11-03-2002 20:34:01
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Re: Re: Re: '54 GMC six cyl hydromatic==any info? in reply to appreciate it==bj/w150/mt, 10-23-2002 10:34:17  
I have a shop manual but it gives no clues about production. They would be pretty rare though.

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Tim in OR

02-06-2005 17:53:44
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Re: Re: Re: Re: '54 GMC six cyl hydromatic==any in in reply to Allan, 11-03-2002 20:34:01  
That engine is a Pontiac if memory serves me.
I have been told the trany was sought after by the hot rodders. I just remember that it worked good in the 1/2 ton I used in the late 60's. Just like the 4 speed manual, just automatic.

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Claude Pierce

01-20-2007 17:43:30
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Re: Re: Re: Re: Re: '54 GMC six cyl hydromatic==an in reply to Tim in OR, 02-06-2005 17:53:44  
father in law bought '53 gmc 228 6 cyl. hydra new. wife and i restored from '91 to '99 engines were built by gmc not pontiac trans is identical to cad, olds, & pontiac of same era. park is achieved by putting trans in reverse and shutting engine off. should only start in neutral. diff between car and truck tranny is trucks had smaller torque convertor. trucks had enclosed driveshaft and 5.13 stump puller rear gears. ours will run at 50 m.p.h. if you push it a little. gmc was first trucks to offer automatics ( in '53) chevy followed in '54 using the same trans we had ours rebuilt by a trans shop in '98 or '99 at about $1100. good luck!

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danny in bama

07-03-2005 16:29:45
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Re: Re: Re: Re: Re: '54 GMC six cyl hydromatic==an in reply to Tim in OR, 02-06-2005 17:53:44  
the hydramatic trans didnt have a park position, per say, you had to put it all the way down into reverse and this locked the drive train so ,..
reverse IS PARK, good luck
danny in Bama

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John

07-27-2005 12:55:40
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Re: Re: Re: Re: Re: Re: '54 GMC six cyl hydromatic in reply to danny in bama, 07-03-2005 16:29:45  
If you ever get any news as to the production number for a 54, would be kindly appreciated.

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vintovka

10-29-2006 10:03:52
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Re: Re: Re: Re: Re: Re: Re: '54 GMC six cyl hydrom in reply to John , 07-27-2005 12:55:40  
I've owned the same 54 chevy pu since before Vietnam started - still got it. It was airforce issue (Re USAF data files) and had a factory hydromatic trans and virtually no chrome It ( the trans) never worked right and doubt its worth the effort to rebuild even to todays standard. Even had it rebuilt once and it still let me down to the point of being downright dangerous in traffic. The reason i was told it was sold to the military was chevy was the low bid. No wonder there. Sorry if this offends but I still have bad feelings about.

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Robert

04-08-2006 14:15:04
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Re: Re: Re: Re: Re: Re: Re: '54 GMC six cyl hydrom in reply to John , 07-27-2005 12:55:40  
All answers I find are at OldGMCtrucks.com

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