Blupupher
02-11-2003, 09:59 AM
Q: What gears do I have in my differential's?
A: Your stock differential should have a metal tag on the side where the cover bolts on. It will be imprinted on this. If the tag is missing, you can figure it out by lifting both rear wheels off the ground and placing it in neutral (and blocking the front wheels). Then rotate the wheels, watching the drive shaft. You need to count how many times the drive shaft spins in 1 rotation of the tire. The number of times the drive shaft spins will be your gear ratio. Stock TJ ratios are 3.07, 3.55 (pre-'99), 3.73 ('99+), 4.10, and on 2003 4 cyl Autos, 4.56. Not sure on the stock ratios for YJ's. To help count the rotations, mark the tire, drive shaft and pinion on the axle with chalk or tape for reference.
Also, CLICK HERE (http://www.jeep.com/wccsapp/universal/J/index.jsp?appStr=wccs&titleStr=Contact+Jeep&familyStr=brand&franchise=J&actionURL=%2Fwccs%2Fbrand_forms%2Fus%2Fwebform.jsp&promotion=null&category=U) to go to Jeeps web site and enter your VIN and they will e-mail you your build sheet.
A: Your stock differential should have a metal tag on the side where the cover bolts on. It will be imprinted on this. If the tag is missing, you can figure it out by lifting both rear wheels off the ground and placing it in neutral (and blocking the front wheels). Then rotate the wheels, watching the drive shaft. You need to count how many times the drive shaft spins in 1 rotation of the tire. The number of times the drive shaft spins will be your gear ratio. Stock TJ ratios are 3.07, 3.55 (pre-'99), 3.73 ('99+), 4.10, and on 2003 4 cyl Autos, 4.56. Not sure on the stock ratios for YJ's. To help count the rotations, mark the tire, drive shaft and pinion on the axle with chalk or tape for reference.
Also, CLICK HERE (http://www.jeep.com/wccsapp/universal/J/index.jsp?appStr=wccs&titleStr=Contact+Jeep&familyStr=brand&franchise=J&actionURL=%2Fwccs%2Fbrand_forms%2Fus%2Fwebform.jsp&promotion=null&category=U) to go to Jeeps web site and enter your VIN and they will e-mail you your build sheet.