If you want to stick (is that a pun?) with an automatic, you might try a Chevy
700R4. It is the one that is used with the Suburbans, etc and is an overdrive
automatic. If you want to go with a standard, track down all the parts and
pieces needed for a clutch (read as LOTS of work) and go with a 98/98 5 speed
from a 3/4 ton Chevy/GMC. The 5 speed has a somewhat compound low for stump
pulling and the 5th gear is an overdrive. Any other regular 3 or 4 speed
transmissions are a 1 to 1 ratio in high gear and you would gain nothing. The
other options might to be getting a 3:23 or a 3:55 ring an pinion replacement.
This would give you more of a car rear end as far as the final drive ratio
goes. You might even be able to turn 70 MPH at 2500RPM if you were to put in a
3:08 rear end ring and pinion. At any option you might be better off money and
sense wise going to a shop and having the ring and pinion replaced. Good
Luck...Bob Fentress
---------- Original Message ----------------------------------
From: Passnb4U@aol.com
Date: Fri, 16 Apr 1999 17:15:17 EDT
>architectmsu@yahoo.com writes:
>
><< bj: [oletrucks] '59 Chevy 3/4 ton tranny?
> From: architectmsu@yahoo.com (wayne sellers)
Reply-to: architectmsu@yahoo.com (wayne sellers)
>
> Hello,
>
> I am new to the list. I recently bought a 1959 Apache 3/4 ton 2WD.
> The guy I bought it from took the original motor and tranny out of it
> (with only 80,000 some odd miles on them! ARRRGGGHHH!), because it
> wasn't running good. He proceeded to replace them with a 350 and
> automatic tranny from an '86 El Camino.
>
> The truck has the original 4.57:1 rear end under it. Needless to say
> it sounds a little wound up at about 40 mph and screams at 50mph.
>
> Damage being done by losing the original motor and trans, I think I
> will just leave the 350 in it, but am afraid that I will burn the
> tranny up trying to push those low gears.
>
> Does anyone have any suggestions as to a later model manual trans that
> I could put back in to better accomodate the gear ratio?
>
> As I said earlier I'm new to the list (and the old truck process) but
> am ready and willing to listen and learn. Any info would be helpful
> and greatly appreciated!
>
> Thanks in advance,
> Wayne >>
>
>
> Wayne,
>
> You really have only two options that require the least amount of fabbing.
>One would be to use a 700R4 tranny (4spd auto with .70 OD) or change the
>rearend to a higher (lower numericall) geared rearend.
>
> You could also go with an overdirive manual transmission, but more work is
>required, or get a overdrive unit (Gear Vendors come to mind) to bolt on to
>the TH350 you have now, but the cost is around 2K for the unit.
>
> Good luck,
>
> Mike
>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
|