3B tranny same as MC-2 tranny?

Henry A Harper III hah at alumni.rice.edu
Tue Mar 4 17:19:24 EST 2003

Yes, final drive == ring and pinion ratio. Actually the 3.89 from the MC
should give the '91 a lower rev/mph than its normal 4.11, all other things
being equal (including the rear diff swapped as well). I think the lower
numerical gears in the 3B may be used to take advantage of the higher
redline of the 20v engine in the 1-4 gears, compare mph/1000rpm in an MC to
be sure.


On Tuesday, March 04, 2003 4:56 PM, auditude at cox.net
[SMTP:auditude at cox.net] wrote:
> Thanks Henry (and Scott).  And sorry about that ugly typo in my post.
> Is the final drive ratio determined by the ring and pinion?  If I were to
backdate a 200q20v with a 10v 200 tranny, for repair reasons, I would need
the 10v rear diff as well, and this would result in the motor spinning at a
higher rpms than normal for a given mph, right?
> Thanks,
> Ken
> Henry A Harper III <hah at alumni.rice.edu> wrote:
> >
> > Both MC and 3B engines use type 016 transmissions with certain
> > torque-sensing center differentials, and I believe the 5 forward gears
> > about the same ratios, but there are differences such as the MC's
> > differential ratio vs 3B's 4.11:1. I can't recall if the ratios are
> > to give higher revs/better acceleration for the 3B - mine gives
> > 25mph/1000rpm in 5th...

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