Transmission Upgrade/change

[freewill2008]

If you are starting from scratch with a 5 or 6 speed box, you should
be able to get both a lower first gear and a taller top gear. This
would/should prevent the need to change the final drive ratio.

Best of luck. I'm sure many will be interested in how the conversion
turns out.

Bob Griesel '84 FC31 WLII

--- In WanderlodgeForum@yahoogroups.com, "hsaddock"
wrote:
> Folks:
> I am giving serious thought to changing the transmission in my
> 83FC35 from the Allison MT641 to an Allison MD3000. The reasons
> are: 1) current transmission with 112K miles on it shifts a little
> slowly from 1st to 2nd at full throttle - it shifts just fine if I
> back off the throttle slightly and in all other gears. (perhaps
this
> is the beginning of a bigger future problem?) 2) I want to travel a
> little faster at top-end, and the MD3000's 5/6 speeds gives the
> overdrive(s). 3) I want to pull a little better going up steep
> hills so if I lower the differential ratio while doing this
> conversion, I can pull better in the lower gears and still tool
down
> the road faster on the flats with the overdrives.
>
> Has anyone tried this conversion? Comments on anticipated issues?
> The MD3000 appears to be an inch shorter in length than the MT641
> and a similar bolt up pattern so I don't expect to see any major
> issues with mounting. The MD3000 is computer controlled - can it
be
> fooled into working with an older 3208?
>
> Harry Saddock
> 83FC35
> South Windsor, CT