Ratio and Gear

[tundra]

What ratio are you running ? What is the best ratio for the non-turbo.

Now i'm running 40-21. 1.905 my top speed was a good 155 kph
Stock mine come at 40-23- 1.74. my top speed was 160 kph on speedo

I havent change my clutching spec, on really hard pack snow a 250 feet elevation, my sled turn 11000 rpm.

between 2200 and 3000 with low atm pressure, i'm running

i'm thinking to go at 2.05
43-21.

first, it is possible ? and what gain i will have

thanks

 

[RED]

I tried to put a 43 lower in my sled. The gear fits okay, but the chain will hit the chaincase cover seal. Was told to cut the seal, lost interest in the 43, going to run a 42, no mods with that gear/chain.

 

[tundra]

What speed i'm gonna hit with 42-21

is i'm gonna have a bigger fuel consumption ?