RE: best big block for a MT?
Depends on how deep your pockets are! If money is not a problem then a Rody RB C-5 would be near the top of the list. The Hyper 8 port is a great "cheap" engine when tuned right it is one of the best entry level .21's out there. If your just getting into the sport I would stay with "cheap" engines like the Mach .26,XTM and 8 port or stock until you know more about tunning and caring for a nitro engine. It's allot better if you make a mistake and trash a $140 engine then a $300-$600 one!