Originally Posted by Steve
Originally Posted by abdabbs
Also, how am I going to be able to tell what ration my rear end is ?? I want to mass as much info as I can before I go too crazy with starting on projects.
1) Put a mark on the tire and a mark on the drive shaft. Have someone drive it in the lowest gear (or push it in neutral) and count how many times the drive shaft turns per turn of the wheel
a similiar but alternate method:
shut the bus off, chock your front wheels release the parking brake put the tranny in nuetral, then jack up the duals on one side. Mark the tire and driveshaft. count the number of driveshaft revolutions it takes to make one complete revolution of the tires......then multiply by 2.
If for instance it takes about 2 turns of the driveshaft to = 1 rev of the rear tires......multiplying 2x2 = 4. Your gear ratio would be a 4.10:1......that really means that the driveshaft has to turn 4.1 times to make the wheels travel one compete revolution.
Like most of our rigs, your bus probably has more like a 5.56 (or even higher) rear. I used 4.1 in the example because it was an easy number to work with.