[Fot] GT6 Rear End Needed 3.91

[Spitfire Racing]

The Spit 1500s do in fact have a 3.89 ratio diff. The Mk 4 Spits have a 4.11 in them but are heavier built than the earlier diffs in the mk 3. It is common practice to install a 4.11 R&P into the 1500 diff case but they will have to be shimmed properly for gear engagement.

 

Russ Moore

Spitfire #49

 

From: Fot [mailto:fot-bounces at autox.team.net] On Behalf Of Don Marshall via Fot
Sent: Friday, August 21, 2020 4:52 PM
To: Terry Sopher
Cc: Friends of Triumph
Subject: Re: [Fot] GT6 Rear End Needed 3.91

 

Terry, I think I have one here in Macclenny. It's off a non OD Spit 1500, which I think makes it a 3.89. You're welcome to come check it out. Don

 

On Fri, Aug 21, 2020, 3:51 PM Terry Sopher via Fot <fot at autox.team.net> wrote:

FOT - During qualifying for Kastner Cup my flywheel sheared off!  Thanks to Tim Slater for help diagnosing in the paddock!   Took the Spit to Andy Greene Sports and Vintage Race Cars in Savannah.  (Andy bought Ted Wentz's Savannah Race & Engineering in June 2020). Crank was broken as well.  Rebuilding engine & hope to be a VDCA Hurricane in Savannah in Sep!

Hoping someone can help - Looking to source a 3.91 GT6 rear.  Apparently PO put a 4.55 in the car for hill climbs!

Thanks, 
COL(Ret) Terry Sopher
813-508-1243
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