I am thinking about puting a motorcycle engin in a ATV chassie for motorcross racing. What engin do you think is best and how much horse power can you get out of it (even with big bore, and pipe ect) and what company would do it. Or do you think i should go with the Trinity Speed or the Advancedatv.com stage 3 cannible. Please give your thoughts

 

go with the YZ450 or YZ250

 

Do u know who makes a big bore kit and whats the most HP you can get/???

 

with what engine

 

Any engine i would like to know who makes a bigbore

 

Why does anybody need more power then a Moto? If your not racing on the national pro level whats the purpose?? I'm far from a great rider and to old to ever be, but I'd try to ride better. I want to compete w/ 440ex's and decked R's. If a guy on a 250r w/ pipe and filter beats me I should learn to ride better, not put $$$$ into my motor..

 

CRF450 all the way. I own one and there is NOTHING else out there to put a bigger grin on my face. The motor produces 56 hp, which is plenty to roast even the big bores. Plus you can get the motor without buying the whole bike.

 

How much money for the crf 450 motor with all neccacery parts?

 

where do u get the motor, how much, and can you get a big bore or get it to put out around 60-75??

 

60-75 hp??? What kind of racing you plan on doing?You May want to look at a banshee or a quadzilla to hit those #'s.