Sppeometer gear
 

I have a T-5 five speed Motorsport trans in my car with a 9" 3:70 gear set on P225/60VR15 tires. Can someone tell me how to calculate what nylon gear to install on the cable so my speedometer will read correctly? It reads approx 15 mph too fast. It was working fine with the old 3:00 gears. Thanks.



[This message has been edited by Kendall67 (edited 02-07-2001).]

you can find a mathematical formula on this site under technicle articles in Marty Kot's 50 quick hints article.

What year T-5 is it? I'm running a 23 tooth
gear with my T-5 and 3.55 rear gears. Different T-5's had different gears inside
some had 7 toothm, some 8. Mine is a 1990