Thread: Gear Ratio
View Single Post
  #3  
Old 10-03-2009, 10:54 AM
28HopUp's Avatar
28HopUp 28HopUp is offline
Moderator
 
Join Date: Oct 2008
Location: South Carolina
Posts: 4,524
Default

Considering the age of these cars, your gears could have been swapped out along the way and the tag lost. You could safely jack up both rear tires, and with it outa gear count the driveshaft revolutions for one complete rotation of the rear tire. With a t-lok, you'd find:

* just shy of 3 turns would be around 2.73:1 gears (depending on year)
* close to 3 turns would be 3.08:1
* 3-1/4 turns = 3.27:1 (or 3.31:1, depending on year)
* 3-1/2 turns = 3.55:1
* 3-3/4 turns = 3.73:1
* just shy of 4 turns = 3.90:1
* just over 4 turns = 4.10:1
* just over 4-1/4 turns = 4.30:1

For some reason, open rear-ends don't work with that method (they are half that). I need to read up on why that happens.
__________________
Bill Jr.

To everyone out there, wherever you are. Remember, the light at the end of the tunnel may be the police chasing you down in their own Mustang!
Reply With Quote