ORIGINAL: ssj2
Hi, I'm just wondering what engine would be the best to install onto a Mammoth ST to bring out the max top speed. I would like to stay in the .21 size engine range (because I have a roto start that'll fit .21's), but if there are any that're better, please tell me. Thanks!
Umm just because it fits SOME .21's does not mean it fits ANY .21's. Actually most .21's from the same manufacturers as larger up to .28 or higher are the same. What engine is your roto-start for?