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View Full Version : advise?????


atvextremerider
06-21-2011, 06:50 PM
I need some help. I need more power to keep up with my friends with 450
i got
hmf slip
K/N air filter no lid
big gun rev
tusk parking break off
426kidz
06-21-2011, 07:10 PM
re-gear....i know someone can supply you with the gearing calculator...the right tires size and gearing is where its all at, unless you are willing to build the motor than we have a whole new issue!,lol;)
sheldo
06-21-2011, 07:38 PM
Originally posted by 426kidz
re-gear....i know someone can supply you with the gearing calculator...the right tires size and gearing is where its all at, unless you are willing to build the motor than we have a whole new issue!,lol;)

http://home.earthlink.net/~gellett/400ex.htm
CJM
06-21-2011, 07:41 PM
Sparks key and stage 1 hotcam. I mean unless you want to break open the engine and throw in a higher compression piston.

The above will help, but it wont be a 450. Mine, now Im as close to being a 450 pretty much with running pump gas-any higher compression and I would need to run 100 octane at least. Yes it will hang with the 450s, in a drag they will beat me tho.
426kidz
06-21-2011, 07:54 PM
x2^