373 to 430 gears rpm difference !

[89lxcoupe]

just wondering how much higher my tach will be up at 75mph right now its about 1900-2000 rpms !

 

[earleys94gt]

Here you go...http://www.allfordmustangs.com/Detailed/608.shtml

Enjoy.

 

[Fast63]

you must have some really big tires to be turning only 1900-2000 at 75mph with 3.73's. What size are your tires? Are you sure your speedometer isn't off?

 

[5spd GT]

Gear Calculator:

http://www.allfordmustangs.com/Detailed/608.shtml

Reference with T5 transmission/stock tire size/16in. wheel, in 5th gear cruising rpm at 70mph (Interstate Speed):

2.73:1 - 1696 RPM
3.08:1 - 1914 RPM
3.27:1 - 2032 RPM
3.55:1 - 2206 RPM
3.73:1 - 2318 RPM
3.90:1 - 2423 RPM
4.10:1 - 2548 RPM
4.30:1 - 2672 RPM
4.56:1 - 2834 RPM

 

[89lxcoupe]

well i have 245/60-15s on the back but my car is supposed to have a terminator t5 but i dont know....... the gear ratio is deffinatly not stock ! 5th is very high compared to the rest ! at 45mph i go to 5th and the car starts jerking at like 1400-1500 rpms !