Mike -
There was indeed a limited slip differential available for the early
open drive trucks. They are very rare, I have only heard of one other
besides yours, but I think it was a 4.11. I suggest you contact Tom Langdon
at www.stoveboltengineco.com. He's the guy who had it (and may still). He
may be able to give you a lead on a service supplement.
Jack / Winter Park FL
----- Original Message -----
From: <MASK4335@aol.com>
To: <oletrucks@autox.team.net>
Sent: Wednesday, June 30, 1999 6:05 PM
Subject: [oletrucks] What rear is it?
> Help Gang,
> I recently bought a rear end for my '48 3100 at a swap meet. It is
> externally identical to the original closed drive rear that was in my
truck.
> The seller said it was original in his '57 1/2 ton chevy with 3.90 gears.
> While preparing to weld up the spring perches, I removed the stump to
inspect
> the gears, bearings, etc. Behind each of the axle gears there is a stack
of
> clutches. I know this is a truck rear because it has the 6 lug axles and
as
> I said is identical to my old one except it is an open drive. My old rear
> had none of these clutches either.
> Questions -
> 1. Can this be an early posi-traction rear?
> 2. Were they an option in '57 trucks?
> 3. And most important, how do the little clips (8 total, 4 of two
different
> types) go that hold the clutches in the housing?
> 4. Does anyone have a supplement to the shop manual for posi-traction
> rearends that can be e-mailed, faxed, mailed?
> The seller said nothing about it being a posi-traction unit and my shop
> manual does not cover posi-traction rears so I need some help here.
Thanks
> in ADvance.
> Mike Klepp
> '48 3100
> Wichita Falls, TX
> 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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