9.5 gearing
 

hey guys,
i´ve bought a used car and i have no idea wich gearing to use.
I got the 81 and the 87 potion gear ( is that tha right word ??)
i want to drive a 9.5t motor from GM.
Du you have any experiences ??

Pleas help me out !!

cheers
Till

With the 81 spur i would aim at a 21 pinion and for the 87 spur gear i would use a 23 pinion.

Carl

ok thanks .... i´m gone try this next WE

With the bmax4 your aiming for a final drive ratio of about 9:1 - To work out a ratio you have to divide the spur gear by pinion then times by the internal gearbox ratio Spur / Pinion * Gearbox Ratio


Carl

The 87T/23T is going to be a hard fit due to the cam style motor mount. Definetly go for the 81T/21T Carl suggested (that will fit) and then take it from there...