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Don't press your luck!
 Sure, you know how to work on old trucks. Or maybe you're just starting in the hobby. Either way, safety is best learned through OPM (Other Peoples' Mistakes), not OJT!
Either as newly discovered wisdom, or a refresher, please read this article and live safely with your old truck!
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Forums60
Topics128,763
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Most Online1,229
Jan 21st, 2020
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Joined: Jun 2010
Posts: 545
OP
'Bolter
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Is there a difference between the 1954 gmc and the 1954 Chevy trans
I have a gmc and have a good Chevy trans. Can I put trans. In truck?
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Joined: Sep 2001
Posts: 31,754
Bubba - Curmudgeon
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One difference would be the flywheels.
Another difference that would most likely not matter: carburetors.
Cletis, we need you (he had both transmissions).
Maybe Greg Hill knows?
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Joined: Jun 2010
Posts: 545
OP
'Bolter
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What difference is the flywheel?
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Joined: Sep 2001
Posts: 31,754
Bubba - Curmudgeon
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I think there is a difference in the flywheel mounting-bolt pattern (and, number of bolts) on a 1953 GMC H-M, compared to the later Chevrolet H-M flywheel.
If that is correct, I would guess the later GMC H-M's bolt-pattern (and, number of bolts) would also be different.
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Joined: Feb 2004
Posts: 25,940
Kettle Custodian (pot stirrer)
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The fluid coupling (no, it's not a torque converter) from the Chevy will probably interchange with the GMC transmission. If it's in good shape, that will probably solve the fitment problem when the GMC trans is bolted to the Chevy engine. Be aware that the runout between the bellhousing and the crankshaft centerline is extremely critical when the hydramatic is mated to the engine, so much so that Chevy matched engines and bellhousings at the factory on H-M equipped vehicles.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!"
Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self.
Ernest Hemingway
Love your enemies and drive 'em nuts!
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Joined: Jun 2010
Posts: 545
OP
'Bolter
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Can I put a Chevy trans. To replace the gmc trans?
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