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54 Chevy 3100 w/ GMC Hydramatic (?)
#1015646 Thu Mar 20 2014 04:07 PM
Joined: Feb 2014
Posts: 34
D
Wrench Fetcher
Hi all,

May seem like a silly question, but can my stock 54 Chevrolet 3100 1/2 ton truck (235/manual) be converted to use the same 235 (or 248 engine) with the hydramatic tranny from a GMC? (54' 248 w/ hydramatic) Or is this more trouble than beneficial?

Any feedback and/or comments would be great! Thanks.


Psalm 32:8
Re: 54 Chevy 3100 w/ GMC Hydramatic (?)
DeanThe54Chevy #1015675 Thu Mar 20 2014 05:49 PM
Joined: Feb 2001
Posts: 1,338
T
Shop Shark
I think the GMC engine is longer.


Tommy
59 apache 1/2t
261 short stepside
Re: 54 Chevy 3100 w/ GMC Hydramatic (?)
DeanThe54Chevy #1015694 Thu Mar 20 2014 07:44 PM
Joined: May 2001
Posts: 8,386
Extreme Gabster
I know the GMC engine is longer. The Hydra-Matic cab is different as is the transmission mount.

Can it be done? Yes. Is it worth the effort? That is for you to decide.


"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.
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Re: 54 Chevy 3100 w/ GMC Hydramatic (?)
DeanThe54Chevy #1015775 Fri Mar 21 2014 01:46 AM
Joined: Aug 2001
Posts: 1,143
G
Shop Shark
Chevy and GMC engines, crossmembers, linkage, and shift mechanisms are different. I converted a 54 Chevy 3 speed to a H-M but I bought a 54 Chevy H-M rolling chassis and basically put my body on it. As Cletis mentioned, the cab is different between the manual trans and the auto but after finding the H-M trans cover, the cab was an easy trim to fit it.


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