[Fot] Gearing question for Lime Rock

[Joe Boruch]

 I have used a 4.3 at LRP for years in my TR3.  I have a 7300 redline and a 5 spd transmission with a .81 5th gear.  Only use 5th on the main straight.  Back in the late 70's many of the TR3/4 racers would use a 4.54 diff with the TR OD trans.  JoeB
    On Monday, June 2, 2025 at 12:58:04 PM EDT, Dave Riddle via Fot <fot at autox.team.net> wrote:  
 
  
Lime Rock is a high speed Track so does the collective FOT wisdom think a 3.7 or 4.1 rear end would be best in a TR4?
 
  
 

 
Dave Riddle
 
Business IT Consulting
 
Office: 480.610.8234
 
Cell: 602.692.5276
 
eMail: dave at microworks.net
 
Website: http://www.microworks.net
 

 
  
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