12 Valve Cummins, Class Build Help

Hey Everyone,

Personally I am a Duramax and LS Performance guy. I know little or very little about 12 Valve Performance. In Ontario, the pulling club I run my 6.0L LS Powered Sled Pulling Class also allows 12 Valve Cummins to pull. However, after a rule change this year I need some assistance.

They have now changed the rules to give these limiting factors to 12 Valve trucks.

- 62mm Charger Maximum, No Bushings
- Open Injectors and Internals
- Cast Iron Cylinder Head
- No Water Injection
- Air to Air Intercoolers

Assuming you could build any truck you wanted, but with those rules as a limiting factor, I am starting to think that they could certainly build some serious horsepower. What does everyone think would be the maximum amount of HP/TQ that could be created with these rules from a 12 Valve?

Thanks for any help

I would say you could get 700hp. But that wouldn't be skimping on anything.

Keeping egts in check would be a limiting factor with no water/meth and no A/W.
But I agree with Eric, around 700.
That's assuming *nx* isn't allowed lol