You are absolutely right Wayne, all of these gear ratios and others were
standard in Pre-metric [1982] 10 &12 bolt GM cars.These can be still found
in many wrecking yards thru-out US and Canada. Another very good rear was
the Olds-Pontiac made in mid '50s until the mid '60s. these had standard
ratios of 3.50 and above, and parts are still available as many used the
Dana posi also used in the hi performance Chryslers in the late '60s and
'70s, the diff. gears and the axel splines were the same as the GM after
'58.
Lee
----- Original Message -----
From: "wayne osborne" <wayne@chevytrucks.org>
To: "Ed Miller" <enigmaT120@highstream.net>; <oletrucks@autox.team.net>
Sent: Friday, March 19, 2004 5:30 AM
Subject: Re: [oletrucks] Re: Rear end gear ratios
> At 06:09 PM 3/18/04 -0800, Ed Miller wrote:
> >I haven't heard of those gears for our trucks; my flyer shows 3.70 as an
> >option for '58, with the 3.90 as standard.
>
> The 3:38 is an after market gear set that fits the original rear end
> carrier sold my most vendors. After you factor in replacing all the
> bearings, it becomes a very costly project. Maybe 600 or so to complete
it.
> I found it easier to just replace the rear end from a donor vehicle and
> continue on. --wayne
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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