[Fot] GT6 differential

[Guyots3 at wmconnect.com]

In a message dated 3/2/2008 11:00:26 AM Pacific Standard Time, 
fot-request at autox.team.net writes:

> Date: Sat, 1 Mar 2008 11:12:28 -0800
> From: <igofaster at charter.net>
> Subject: [Fot] GT6 GEARBOX AND DIFFERENTIAL
> To: fot at autox.team.net
> Cc: fot-request at autox.team.net
> Message-ID: <20080301141228.LRSY3.25770.root at fepweb03>
> Content-Type: text/plain; charset=utf-8
> 
> Greetings FoT ! 
> Just finished the CVAR race last weekend. It will be the last weekend with 
> my lovely T50 5 speed gearbox.... ugh....   used a smaller tire and was 
> getting my revs quicker and actually needed the 5 speed on the straightaway.
> Anyways... I've purchased the Triumph 4 speed gearbox from Quantum 
> Mechanics. My questions are, should I continue running the overdrive differential, I 
> believe it's a 3.73 ratio in the GT6, or go back to the stock ratio of 3.27? 
> My friend Bob Kramer suggests I build the car to run its peak at TWS which 
> does have a long straightaway. The other courses we run with CVAR do not have as 
> long a straight.
> I'm also wondering about the Quaff  (sp)  for the differential... seems 
> they're in the $1200 range. Is it worth the dough or should I keep the current 
> 3.73 gearbox or have a 3.27 welded locked?
> Appreciate the group!
> Bobby Whitehead  #54CVAR GT6+ EP Group2

Bobby,

The GT6 differential ratios are 3.89:1 or 3.27:1, but you are probably 
referring to the alternative 3.63:1 ratio, not usually found on U.S. market cars, 
but normally on U.K. market Spitfire 1500's.

There is no 3.73: 1 ratio differential.

The Salisbury LSD is probably a better bet on the race cars than the Quaif, 
but the Quaif is better as a road car differential.

Regards

Leon  

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