RPO may be Regular Production Option or similar. It is the option number
either way. It shows them in the assembly manuals. I bet that is for the
Hydromatic trans only, an option in 54 and later.
G. L. Perry
----- Original Message -----
From: "Rich Kosiba" <kosibar@kolbenet.com>
Cc: "OLETrucks" <oletrucks@autox.team.net>
Sent: Tuesday, April 22, 2003 2:20 PM
Subject: Re: [oletrucks] Will ring and pinion in 48 car fit in 54 truck?
> Someone sent me a scan from the restoration pack on the page with the gear
> information on it. It seems that some were 4.11 and some were 3.73 (or
> something like that, I don't have it sitting right in front of me here).
> One is marked as Reg, the other as RPO. I'm not sure what the RPO means,
> but I'm hoping that I'll be able to find a casting number that will tell
> me what it is. I go tomorrow to pick it up.
>
> RPO - Ring and Pinion Option?
>
> Rich
> '50 3100
> '54 3100
>
>
> > ----- Original Message -----
> > From: "Rich Kosiba" <kosibar@kolbenet.com>
> > To: "OLETrucks" <oletrucks@autox.team.net>
> > Sent: Monday, April 21, 2003 7:29 PM
> > Subject: [oletrucks] Will ring and pinion in 48 car fit in 54 truck?
> >
> >
> > > I'm getting a rear axle from a '48 Chevy convertable. I believe my '54
has
> > > 4.11 gears in it, not the original 3.90. :( What would the '48 car
have in
> > > it, and would it fit in my '54?
> > >
> > > (FYI - the casting number on the '54 rear axle is for a '49 and
someone at
> > > one time had run over something - bent some pretty heavy metal - so
they
> > > probably destroyed it and just pulled the axle out of a '49.)
> > >
> > > Thanks!
> > >
> > > Rich
> > > '50 3100
> > > '54 3100
> > > 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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