what to do?

[slamedsilverado]

ok i mostly trail ride and race occasionaly (sp) what would be better for me? 416 or 440 and would i have to change from my 93 octain to race fuel..............i think i'm eddign more to the 416 just lookin for some helpfull info

Dan

[400EXrider77]

race gas would depend on the compression

[4TraxRider]

Keep it below 11.1 compression and you can run pump gas on whatever size you choose. If money is tight you could even look into a 406 with a high comp piston, then you don't have to get it resleeved. I ran it all last year and had no problems keeping up with everybody. I just rebuilt another motor as well, and im running another 406 this season and have been more than happy with the bang for the buck it provides.