Need info for 80mph brushless truggy...

[BP-Revo]

I think a 1527 on 12S lipo is more than enough to provide you with that, assuming you keep the rest of the truck light. 12S is a lot of battery, so you'll want as little weight as possible while maintaining a good current rating. I think 30C (or higher) batteries are a must in this case.

I will have to say, there will be very little low speed drivability, as since it is geared so high the minimum speed will have to be "that" high.