Subject: Re: [airstream] RE: towing in OD
Date: Fri, 29 Jan 1999 16:49:24 -0500
From: "Dan Burwinkel"
Reply-To: airstream@airstream.net

Per,
A better solution is to go with 3.42 rear end and a U.S. Gear underdrive unit. This way you could stay out of OD when towing and you still go 1:1 from the engine to the rear end gears. You can go to underdrive to pull a long grade comfortably. Effectively this gives you a choice of rear end ratios on the fly... the 3.42 or somewhere around 4.60, or whatever the specs are on the unit you choose!

Dan burwink@fuse.net

>Another thing I have been investigating myself is getting one of those gear
>splitters. The reason I wanted to tow in OD was to extend the distance
>between gas stations and to reduce noise. I have tried to run mine in OD
>for a short stretch and there was a noticeable drop in noise ('93 3/4 ton
>burb, 454). The gear splitters appear to offer a good compromise in that the
>highest ratio in 3rd becomes only a few percent lower than stock OD, which
>in most cases should equal some lower RPM and noise. The gear splitter
>should also make me a bit more agile when towing, without exposing my engine
>to the risks of a supercharger.
>
>>Per