Ford Mustang Forum banner
Status
Not open for further replies.
1 - 8 of 8 Posts

·
Registered
Joined
·
2,467 Posts
Discussion Starter · #1 ·
Anyone know how to determine what gear ratio you have by the door code?..I have a 90 GT door code...M under axle code...does anyone know what ratio that is?...
 

·
Registered
Joined
·
4,179 Posts
i have no clue, but you can jack your rear up, mark the driveshaft, and spin your tires in neutral. then you can figure out the ratio that way
 

·
Registered
Joined
·
1,336 Posts
Yeah do that. I dont think the door tag specifies gear ratio, only whether its a Trac Loc or open rear. Could be wrong there though.
 

·
Registered
Joined
·
2,467 Posts
Discussion Starter · #4 ·
I thought the axle code told you what gear ratio it has?...Im thinking its 2.73's but maybe its not..:)
 

·
Registered
Joined
·
1,336 Posts
M means 2.73, I think z means 3.08, I think thats all you could get in 90?????.... You might look on the pumpkin to see if there is a tag. Maybe 3.27 was available. And I am pretty sure all 87-93 had Trac-Locs, not sure, wish i could be more help. So ignore my first post, its wrong. :p I believe.....
 

·
Registered
Joined
·
1,883 Posts
Yea, mine WAS code M too....2.73's. key word there....WAS!!! :winks
 
1 - 8 of 8 Posts
Status
Not open for further replies.
Top