i got a 9 in and i would like to know what gears it has and if its a posi i havent cracked it open yet so i looked at the tag i dont know how to read them this is what the tag says
WDM-CI 9MD 2 75 9 3148
------------------ this is the pics of all my cars http://www.motortopia.com/93xr7merc and http://www.fquick.com/bkcamaro 70 Buick Riviera Stage 1 455 Big Block Auto Dual Carb 73 Buick Riviera GS 455 Big Block auto (#2 on dream car list) 78 Chevy C 10 Step Side Pick up 350 auto 85 Chevy Camaro Z28 383 stroker auto (#3 on dream car list) 96 Chevy Camaro Z28 350 LT1 auto (daily driver during the nice months) 14.1 at 99.25 mph 8/5/09 98 GMC 2500 350 auto (plow truck) 86 Pontiac Fiero 2.5L 5 speed (mgp car) Videos of most of my cars http://www.youtube.com/user...eos?flow=grid&view=0
GreenPlatypus
MAY 29, 09:51 PM
off the top of my head... mid 70's truck rear. true 9 inch ring gear, some 9s acutually used smaller ring gears . open diff 2.75 gears. all i got so far. have to do some more digging to make sure i remember correctly. went through this for my camaro not too long ago.
oops. late 70's, early 80's. I think your WDM CI is actually supposed to be WDM CJ.
[This message has been edited by GreenPlatypus (edited 05-29-2013).]
Xyster
MAY 29, 11:16 PM
Do you need to know what the letters stand for or what the ratio is?
If you just need the ratio you can jack up the rear, turn the wheel one rotation and see how many times the input goes around.
bkcamaro
MAY 29, 11:41 PM
Just gearing and if its posi I have a 9 in on my shop floor and I am Debating on which car to put it in my 70 riviera or my 85 z28
. open diff 2.75 gears. all i got so far. have to do some more digging to make sure i remember correctly. went through this for my camaro not too long ago.