I'm thninking of getting another RC10GT but want to build it myself. I'm wanting to try and get speeds up to 50-60 mph, this truck is just going to be a speed project while the other I still race.

So wich engine would you choose? small block .15 or big block .21-.26? Better yet will a big block fit in the RC10?

Ive heard that a you can get a conversion for the GT to fit a .21 but I havent seen it. Why not just use a .18? Thats what Im droping into mine and its a direct fit cause its still a small block. Just a thought.

i think that the right .12 or the right .15 will be just fine to reach those speeds....use a novarossi mt .12 they come off of the mugen mst-1...u can pick 1 up for about 150 or get the os .15 cv-r hyper...i recomend the os...with the rigth gearing and those two motors 50-60 will be possible

ya a good .15 will get up to 60. actually a big block will not achieve as high of rpms.

thanks for the info what rpms would I need to look at 40,000? how many ports and what brand?