Recomened setup! Hurry!

King, not to get down on you or anything, but this is the second thread where you've asked for advise and then argued with those giving it.

The general consensus here is that running a motor at no more than 35,000 rpms is the way to go in a truck. The two best motors that you could get are the Lehner and Neu, but you are asking about the Neu motor here. If you are going to run a Neu, you need either a Compro or Quark controller. To stay under 35,000 rpm on a 4S setup, your choices start at the 1515/1Y on down the kv scale.

The 1515/1Y is very popular for truck applications, but some go with the 2.5d for more conservative running on 4S, with the ability to go to 5S for more speed. Of course, you could run the 1Y on 5S for a bit of insanity, but it will run hotter.

You also seem to be stuck on the speed issue. You asked about 50 mph. I really don't think that you realize what you are asking for. 40 mph is fast for a monster truck. At speeds over 40, most MT tires are going to be ballooned to the point of being pencil thin at the point where they meet the concrete and steering will be iffy at best.

If speed is all you are worried about, you might be better served converting an on road car or maybe even a buggy. I know that my buggy does over 50 pretty easily.

As for how much torque, it will be sick. You can't even imagine what the torque will be like. You can watch videos and they still don't convey what it's like to see it in real life. The guy who owns my LHS has been in the business for over 20 years and when I showed him my MGT conversion he said that he'd never seen anything even close to having that much power. When I let him drive it, he had a hard time keeping the truck on all fours.

This was with a Feigao 8XL on 4S in a 13lb truck.

From what I gathered from your posts, you will likely be best served with a 1515/1Y. It may not get you going as fast as you think you want to go, but it'll be the closest that you can get and still have a dependable setup.

The runtime will depend on how you run, but I'll go out on a limb and say that if you go with the 1Y and 4S lipo, you should get about half an hour on an 8Ah pack.

I've gone a completely different route. I've gone light in my truggy for racing purposes. 4S lipo, 1512/2.5d motor, and 5Ah battery pack.