High RPM Nitro Motor

[Armysolo]

Looking to swap out out my LRP28 from my back half Jato for a higher RPM motor. With 39/19 gearing it's topping out at 55mph. Even with a 3.3 running 50/24T, OS 11k carb and VP 30% race blend it barely broke 50. I'm leaning towards either a RCR modded LRP or an OS21. Curious what others think would be a good motor with high RPM. My goal is to get it to hit break 70mph.

I've heard good things about Nova but I'm not too familiar with their motors and I definitely don't want to fork out the money for one if it's not going to move the car faster.

 

[TeknoJ]

Theres nothing wrong with that LRP and the speeds you are hitting. I would probably go with the OS but, what pipes have you tried? Different pipes favor different RPM ranges.

 

[Armysolo]

Theres nothing wrong with that LRP and the speeds you are hitting. I would probably go with the OS but, what pipes have you tried? Different pipes favor different RPM ranges.

Yea there's nothing "wrong" with those speeds, I've had a couple of friends look at me like I'm nuts when I told them I want it to break 70. Right now it's got a THS on road circuit pipe. I'm limited because of the design of the chassis and placement of the motor. I can't have pipes too long otherwise it'll hit the front tire.