I have a 03 400ex and i was wondering what kind of horsepower i would get with these mods. Pro Curuit T-4 exaust,jetting and Twin air filter, WB rev kit, 11:1 compresion piston, Eldebrook carb, stage 2 Hot Cam. Any numbers would help thanks.

 

probly 32hp

 

ask some guys that have those mods. I have heard like 33, 35.5 ,37(a bit 2 high), prolly close to 35

 

if u tossed in some port and head work i'd say closer to 37.

 

Between 33-36. I would definatly get it ported while you at it. Maybe even some oversized intake valves if you got the extra cash.