I forgot to mention the Bell is 3:1.

 The Allison version will be in the same ball park.

 BTW rumour has it the new RXx will be 3.2 litres equivalent so at
 the same level of tune as the current 13B  TTC engine we are looking
 at 800 HP for a two rotor. It is all aluminium stock as well.


 Paul Lamar


Paul, you might look at the gear set from a NP241 transfer case, it's very beefy and it doesn't have a lot of crap attached to it. Ratio is 2.72:1.

Everett Rankin

How much torque is it good for?

Paul Lamar

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