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


Supposedly 5500 lb-ft, like I said, it's beefy;)



http://www.genuinegmparts.com/pdf/powertrain/GM%20Parts%20Remanufactured%20Transfer%20Case%20Specification%20Chart.pdf

Everett Rankin


I doubt that. I think you mean 550 ft pounds.
The ratio is too low for rotary use. We need 3;1 minimum.

The Ford is good for 650 ft pounds and is used in the power stroke
diesel. It is also 3.12 to one.

Paul Lamar



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