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400ex mods, how much horse power?

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Old Nov 9, 2003 | 11:05 PM
  #1  
exrider400's Avatar
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Trailblazer
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Default 400ex mods, how much horse power?


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.
 
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Old Nov 13, 2003 | 06:38 PM
  #2  
QUADMXR's Avatar
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Default 400ex mods, how much horse power?

probly 32hp
 
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Old Nov 18, 2003 | 11:45 PM
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Default 400ex mods, how much horse power?

ask some guys that have those mods. I have heard like 33, 35.5 ,37(a bit 2 high), prolly close to 35
 
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Old Nov 19, 2003 | 01:32 AM
  #4  
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Default 400ex mods, how much horse power?

if u tossed in some port and head work i'd say closer to 37.
 
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Old Nov 24, 2003 | 11:47 PM
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K_Fulk's Avatar
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Default 400ex mods, how much horse power?

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.
 
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