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Author Topic: which speedo gear do i need Ty ¯ Member # 4920 posted                                 was lookin on 50 resto and they didnt show which one i needed to put 373s in a 90 gt with a AOD. showed 89 but no 90 -------------------- DRIVE FAST TAKE CHANCES ---------------------------- 90 gt nothin special, just your average bolt ons...OUT TO PASTURE 69 fastback project car Posts: 1400 | From: vallejo | Registered: Oct 2004  |  : Jaejae5.0 ¯ Member # 7958 posted                              since its a aod why not put 4.10's in? -------------------- 1987 notchback h/c/i 302 & 70mm turbo SOLD 2000 camaro ss cam only Posts: 4890 | From: the combustion chamber | Registered: Oct 2007  |  : Ty ¯ Member # 4920 posted                                 its still my daily driver and i commute to richmond everyday so i didnt want to get to carried away -------------------- DRIVE FAST TAKE CHANCES ---------------------------- 90 gt nothin special, just your average bolt ons...OUT TO PASTURE 69 fastback project car Posts: 1400 | From: vallejo | Registered: Oct 2004  |  : josesiphone ¯ Member # 8693 posted                              i have 4:10 in my vert w/ aod and it's fine because of the gearing is so tall. I go on the freeway at 65 mph at 2400 rpm. AS for the speedo question, you need to know what transmission you have or if you have swapped one from another know what year it came from because it will matter with the speedo tooth gear because they are different and i can tell you which one you need. Steeda has some great descriptions on speedo tooth gears. That's how I learned the differences between them. They are fairly cheap too. Posts: 40 | From: Lathrop | Registered: Oct 2008  |  : *Als50* ¯ Member # 6003 posted                              Texas mustangs should have it. -------------------- '00XlRangerSlammed-'91Gt347Turbo-'93CalypsoSCFaleen FOXLIVESMATTER ---------------- *BlackGunsMatter* Posts: 1897 | From: La Bahia... | Registered: Sep 2005  |  : Ty ¯ Member # 4920 posted                                 well its the stock tranny but ive had it rebuiilt if that makes any difference but il check out texas mustang -------------------- DRIVE FAST TAKE CHANCES ---------------------------- 90 gt nothin special, just your average bolt ons...OUT TO PASTURE 69 fastback project car Posts: 1400 | From: vallejo | Registered: Oct 2004  |  : Ty ¯ Member # 4920 posted                                 well its the stock tranny but ive had it rebuiilt if that makes any difference but il check out texas mustang -------------------- DRIVE FAST TAKE CHANCES ---------------------------- 90 gt nothin special, just your average bolt ons...OUT TO PASTURE 69 fastback project car Posts: 1400 | From: vallejo | Registered: Oct 2004  |  : whitelx91 ¯ Member # 8317 posted                              i know the 3.73 and 4.10 speedo gears are the same i believe its a 23 tooth gear and as far as the year of the trans goes i dont think it matters cause the speedo cables are the same. Not sure. SuistangS -------------------- SuistangS Posts: 380 | From: Sacramento Ca. | Registered: Apr 2008  |  : mastercudaz ¯ Member # 7486 posted                              The speedo gear is supposed to be the purple one 375-D0OZ-17271-B at Steeda I believe. As for speed on the freeway, you can use this calculator to check your RPMs http://www.csgnetwork.com/multirpmcalc.html -------------------- 1990 Mustang GT Posts: 161 | From: San Jose | Registered: Mar 2007  |  :

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