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Author Topic:   Ford Mini tranny Question/Gear setup
Dirt Full Roller

Total posts: 67
posted March 17, 2005 05:03 PM  
Ok here goes it, I have the german tranny for my mustang mini stock(10 bolt plate on top) 2nd gear ratio in it is a 1.38,the rear gears are 2.73, tire circumfrence is 80". By my calculation this is a 3.76 final gear ratio? Im running a 1/4 mile dirt track and what I have been told I need to run somewhere between a 7.5 to a 7.7 final gear ratio. So this would mean I would need a 5.5 rear gear? If this is right, there doesnt seem to be anyone out there who makes a 5.5 rear gear set. The highest that I have come across is a 5.13 rear gear set. So does this mean I need to get a different tranny? The american made one?(It has a 1.97 second gear) I want to keep it in second gear without shifting.Let me know if I have this figured out right.
Thanks again guys!!!

Dirt Forum Champ
Total posts: 626
posted March 17, 2005 06:41 PM  
I think you was in 3rd gear.

Dirt Roller

Total posts: 20
posted March 17, 2005 06:43 PM  
jimshar, check your gear ratio in your tranny. it should be a 1.986,2.57,1.809,2.14,1.99 these are the five most common. if you are trying to get a 750 final you would use a 2.14 2ND with a 3.45 rear gear that makes a 7.38 ya just gotta find what your engine likes i hope this helps.

good luck

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