What mods to make a 400EX run with a Raptor and Banshee?

[RAPTORAZ]

I've got a friend (without a computer) that has a piped 400EX that is feeling a little overwhelmed by my Raptor and another buddies Banshee in the dunes. He's decided that he'd like to cough up the cash to make himself more competitive in drag racing with us. What mods does he need to keep up with the Raptor and Banshee? Both bikes are also piped. Please list your experiences and mods. Thank's in advance.:)

[DEAL]

Well a good move is to go with either the 416 or the 440 kit .. with a cam..... then he might want to try a bigger carb .. with these mods he should give ur raptor a good race.

[Dave400ex]

I would go with a Curtis Sparks 416 kit or a TC Racing 416 kit. He should stay right with you guys.

[stocktires]

complete 416 motor

CARB
HIGH COMPRESSION BIG BORE PISTON
EXHAUST (440 EXHAUST PREFERABLY)
XR250 CDI
CAM & SPRINGS
AIRBOX MODS
PORTING

[ccole400EX]

I was at Saint Joe state park the other weekend and there was a 440 there that could run with piped raptors and beat them. He had the IMS 440 kit with ported and polished head. He was running the Pro Curciut full pipe with stock carb. He said he was running 13-1 compression and running race fuel with a web full race cam but he also said he was running stock rockers wich i didn't think you could do because the cam is made from a harder metal than the rockers. All i know is this thing is fast. I have a 416 with HRC cam and 10-8-1 piston and he would beat me over 8 quad links every time. I can run side beside with a stock raptor buit the piped Raptor with jet kit will pull me pretty easy now.