the best engine for my old revo was a .18TZ IMO.
i hated big blocks because they sucked the fuel and weighed a ton!!
so i had a 2.5 revo with close ratio gearbox, CD and rear brake (2.5 chassis modded to take rear brake) and it was sick!!
the little TZ completely destroyed all the big blocks at the track (inc a serio .27) and was totaly sick.
shortly after i sold my nitro revo to get back into electric again. (cause you know...3 races in nitro trucks and had already placed 1st, 2nd and 3rd

it was too easy

)
bigger isnt always better IMO and hence i made 1/3 less pit stops
and as for 3.3's....CRAPO engines stock...mod them and give em a THS pipe on OMFG they go off their ****!!!! insain amount of power but it is short lasted, they are still a B**** to tune and still cant beat the TZ.
hence why everyone here is a hardcore BL fan
shaun