[TR] GT6 Cabriolet, diff

[John Macartney]

Factory specs for GT6 axle ratios for all markets were 3.89 diff on all cars
with overdrive and 3.27 for those without. I too had a Mk2 GT6 with a 3.27
diff and an overdrive because such a combo was available but never promoted.
It gave a final overall ratio of about 2.82:1. I can't remember speed values
this far down the track but (a) maximum speed was faster in direct 4th than
overdrive 4th, and (b) you needed a long downhill and a following strong
wind to get it to pull more than 4,000 revs in overdrive 4th. But all that
to one side, it made a great long-distance cruiser and the fuel consumption
was very respectable. That's an issue that was important to me then - and
still is today.

Jonmac

-----Original Message-----
From: Triumphs [mailto:triumphs-bounces at autox.team.net] On Behalf Of Frank
Magnusson
Sent: 06 March 2015 02:14
To: triumphs at autox.team.net
Subject: Re: [TR] GT6 Cabriolet, diff

I had a 72 GT6 Mk III for many years, not sure what the stock differential
was in that, but I installed a GT6 OD unit from another GT6 MkIII of the
same year and drove it like that for nearly 20 years.  I thought it was a
very nice combination.  I never changed anything in the differential.  I
believe it dropped the revs on the highway around 700 rpm of I remember
right.  It really made it into a much nicer cruiser on the highway and still
very quick around town with the OD disengaged.

Frank

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