Hugh,
Not sure on the '46 models but the 47 2nd and later half ton GMC long beds
used
a short piece of enclosed drive shaft to make up the extra 8 inches. There were
two bells, two u-joints. The short inside shaft sometimes breaks so they are
sold
by Carter's as well as the 4 speed u-joint. Just the shaft and 4 speed U joint
go
for almost $300 new. You would still need to find the outside part of the short
shaft. These parts can be somewhat hard to find used. If you don't care about
originality I would think about an open drive shaft rear end.
The truck 4 speed is still 1 to 1 in high gear, same as the three speed if
you
are concerned about top end. Your extra gear is a granny gear for pulling stumps
and such. Very stout "real truck" trans but not a best choice for any kind of
road racing.
Grant
50 Chevy 3100
52 GMC 150
HMills16@aol.com wrote:
> Guys:
> I am a retired Kansas City Police sergeant and am in the first stages of my
> first serious restoration. I have a 46 GMC, EC 102 (long bed) sn 5291,
> firewall number 1574150144. It is titled as a 47 and was assembled in early
> 47, but it is a 46 design. It is complete except for trans. and rear end. I
> have a 49 chevy hypoid rear end for a 1/2 ton and a GMC CC303 1&1/2 ton
> transmission (which shows as an optional transmission for the 1/2 ton in my
> material.
> Can I make this combo work? Is the tranny low gear geared too low for
> pleasure driving? How do I extend the torque tube for the difference in the
> long and short bed measurement (about 8 inches or so)?
> The vehicle is basically disassembled now and I plan to go through the frame,
> suspension and then drive train, followed by the engine, body and paint. The
> truck is very straight and will make a real nice truck. Any help from you
> guys that have done this before is greatly appreciated.
>
> Hugh Mills
> Kansas City
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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