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Date:         Sun, 22 Jan 95 18:22:03 PST
Sender:       Vanagon Mailing List <vanagon@vanagon.com>
From:         Dave Kautz <dkautz@hpsidms1.sid.hp.com>
Subject:      Re: [Q] Decreasing gear ratio

> > > No, I meant '69 ;-) > and I run 185-70R14s. Apparently there were four versions of this > tranny, with normal and mountain gears, with and without limited slip. > I examined my case and it is stamped 'CA' which means 'normal'. However, > I still have the 4K rpms at 60 mph, so I suspect someone has put > other gears into it at some point. Since I have other minor problems > with the tranny, I'm investigating having it rebuilt with a lower > ratio gear set. The guy at the buggy shop told me today that I want > a '74 or '75 T1 tranny. Anybody know for sure? He also said the dune > buggy guys are snapping up all our bus trannies, making them scarce. > Dirty rotters. > > ..Dave Phillips '69 bus | Internet: phillips@aries.tucson.saic.com > Your tires are part of your problem. If you are running 185/70 tires the overall diameter is 24.2 inches. The stock tires, 185-R14 have a profile of 80% and the overall diameter is 25.6 inches. I suspect some- thing is still fishy with the transmision though - If the 185/70 tires are on all 4 wheels, the speedometer will read fast as well.

The '74-'75 transmission does have a numerically lower final drive but this is offset partly by a numerically higher fourth gear <.89 instead of .82>. The nice thing about the '74-'75 gearbox is the improved spacing between third and fourth gears- great for climbing hills. If you want "long legs" for your bus, the gearbox for the 2 liter went back to the .82 fourth gear.

Shiftlessly yours,

Dave Kautz


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