The easy way to find out exactly which ratio gears you have is to jack the car up on jack stands and mark the tire or wheel to the brake backing plates and mark the driveshaft and either the transmission tail shaft housing or the rear end center section so you can count the drive shaft revolutions for one complete tire rotation scope
If the driveshaft goes around almost 3 complete revolutions it has 2.92 ratio for one complete tire rotation, if it goes around 3 1/4 it has 3.23, if 3 1/2 it has 3.55, if 3 3/4 it has 3.73, if almost 4 revoltuions it has 3.91 and if it rotates 4 1/10 it has 4.10 and so on work
IHTHs

Last edited by Cab_Burge; 07/05/19 01:19 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)