Another option, besides the 700, would be a 4L80 or 4L80E, which is basically a
TH400 with an overdrive. The is an electronic controlled. They are much more
durable than the 700s. Everyone I talk to say that the 700s will break no
matter what you do to them. Just another option. Also, in rebuilding my rear
for my monte carlo, I was able to replace the axles, posi unit, ring and pinion
for all under $1000. So that might be another good option.
Just some thoughts....
Bruce
Bob bdfentr wrote:
> 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
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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