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: what gears are in my jeep

S@NDM@N
08-22-2007, 07:23 AM
trying to figure out what gears are in my jeep. got the #s off the axle but i need to know what they mean. also looking for some 456 gears. and no these gears have not been changed thanks
hitech_hick
08-22-2007, 07:34 AM
What are the numbers? If you can't figure it out from that, lift up the rear (or the front) mark the driveshaft, and count how many times you rotate the tire before the driveshaft rotates once.



hick
S@NDM@N
08-22-2007, 07:43 AM
im assuming there 307s theres a tag that has 3 07 5993 on it would that be right there is also a stamp on the axle tube that has a 4 11 7 3a so could they be 411s
gottagofast
08-22-2007, 08:24 AM
What are the numbers? If you can't figure it out from that, lift up the rear (or the front) mark the driveshaft, and count how many times you rotate the tire before the driveshaft rotates once.



hick

close.... if it's an open diff. jack up one tire. rotate it exactly 2 times. count the revs on the d-shaft to get ratio.... ie just over 4 times is 4.10. if it is locked jack up both and rotate once.
blues balls
08-22-2007, 12:24 PM
Assuming the gears haven't been changed out since it left the factory....
DJ404564X4
08-22-2007, 01:39 PM
Assuming the gears haven't been changed out since it left the factory....

UM what year and type of Jeep? If it a 4 banger you probably have 411s .
Little Jeep
08-22-2007, 06:08 PM
Click on this URL, provide you information including VIN. In comment box request a "Build Sheet" and in a couple days a very detailed printout will be e-mailed to you that provides information on how your Jeep was equipped when it rolled off assembly line. Information provided will include the gear ratio and axle types.

http://tinyurl.com/jeg74
Urban Wheeler
08-22-2007, 06:39 PM
im assuming there 307s theres a tag that has 3 07 5993 on it would that be right there is also a stamp on the axle tube that has a 4 11 7 3a so could they be 411s

the tag should be the ratio, the numbers on the axle is the BOM. You can use that number to look up the ratio too.
Knuckelhead
08-22-2007, 11:13 PM
UM what year and type of Jeep? If it a 4 banger you probably have 411s .

Not is he has an automatic...
S@NDM@N
08-23-2007, 08:19 AM
the jeep is a 97 wrangler sport 4.0 automatic
ARB_jon
08-23-2007, 08:21 AM
should be 3.07s
hitech_hick
08-23-2007, 09:04 AM
close.... if it's an open diff. jack up one tire. rotate it exactly 2 times. count the revs on the d-shaft to get ratio.... ie just over 4 times is 4.10. if it is locked jack up both and rotate once.

Yeah, it was a brain fart...


hick
helimech2003
08-23-2007, 04:36 PM
the jeep is a 97 wrangler sport 4.0 automatic

they're 3.73's
the standards came with 3.07
all 4 bangers came with 4.10
rolloverboy
08-23-2007, 05:40 PM
Pull the cover and get the numbers off the gears. Divide the number of teeth on the ring by the pinion and you won't have to guess what you've got. It's probably time for an oil change anyway...
gottagofast
08-23-2007, 06:58 PM
people this isn't rocket surgery or brain science...... this question has been answered both correctly and incorrectly several times..... tag says 3.07 that's what it is... other than that check like I told ya.... no need to pull the cover or send for build sheets (although that IS cool) and it takes less than 2 minutes to find out..... but please by all means post up with what you found out before this thread gets to 8 or 10 pages.