This is topic question about gear ratio in forum Tech Talk at Northern California Ford Owners  .


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Posted by 89mustang (Member # 1362) on :
 
i was wondering what was the factory gear ratio on fox body mustangs or if there were what gear ratio options you could get mostly i wonder for an 89 gt convert if any one knows thatd be great
thank
 
Posted by 93mustangt (Member # 680) on :
 
I think your year came with 2:73's and 93 came with 3:08's [patriot]
 
Posted by 1 FLy5Oh (Member # 2425) on :
 
3:55s im pretty sure of we just riped the gears out of my friends (bone stock) 89 drop top
 
Posted by 89mustang (Member # 1362) on :
 
i was just wondering cause i have an 89 im the 3rd owner, and in the receipts there is one for a custome set of 3:55 gears so if they are stock why would someone pay almost 800 to have them put in??? thats why i was wondering, it just led me to believe that 3:55 werent stock
 
Posted by st5150 (Member # 51) on :
 
Open up your drivers door and tell us what it letter it reads under the "AX" field.
 
Posted by Chico Stang (Member # 801) on :
 
3.55's were not stock on fox bodies!!!!!

2.73's were stock on 5 speeds, and 3.08's on auto. And some people (very rare) had Ford upgrade there 5 speed to 3.08's. So if yours is a 5 speed, stock was 2.73, if its an auto, they were 3.08's.

So the $800 for 3.55's is valid.

Edit: maybe not $800...but the swap is valid

[ May 18, 2003, 10:20 PM: Message edited by: Chico Stang ]
 
Posted by street_illegal_stang (Member # 1554) on :
 
i have an early 89 gt 5 spd with 3.08's..
[Roll Eyes]
maybe you got 3.27 gears?
 
Posted by st5150 (Member # 51) on :
 
The 3.27's pretty much only came on AOD cars. Some dealerships use to install what ever gears you wanted though, but this is rare. Especailly in California.
 
Posted by 89mustang (Member # 1362) on :
 
thanks for the info helps me settle a lil dispute
[dance]
i win
[patriot]
i'll check the letter on the drivers door tomorrow
and im positive they are 3:55's

[ May 19, 2003, 12:33 AM: Message edited by: 89mustang ]
 
Posted by st5150 (Member # 51) on :
 
Well the dealer won't change the door tag that is set at the factory. Another cheesy way to determine gear ratio is to remove the 11mm bolt holding the VSS sensor in place and seeing what color the speedometer gear is. This is of course assuming that your speedometer is accurate.
 




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