national425ex
09-07-2007, 07:33 PM
My 400ex was built by Tom Carlson of TC Racing. It has the 425 kit in it, A Wiseco Piston, TC National Cam, TC lightened crank, TC lightened rotor, and TC shorty Exhaust, along with a hinson clutch basket and hardened rockers. Should I run straight 110 octane or do some sort of mix? I'm racing tomorrow and need an answer fast. Thanks!