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Any good aftermarket cams out there for a Yamaha Kodiak 400 4x4?

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Old Nov 1, 2012 | 09:41 PM
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Default Any good aftermarket cams out there for a Yamaha Kodiak 400 4x4?

Since I am about to bore mine over .020, and put a new carb on it, I am seriously considering putting a mild cam in it. It seems like every atv cam I look up doesn't fit a 2000 kodiak 400 4x4. I would appreciate it if anyone had some first hand advice for this.

Thanx, RD
 
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Old Nov 3, 2012 | 10:47 PM
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bump...........
 
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Old Nov 4, 2012 | 06:36 PM
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if webcam (webcamshafts.com) or hotcams dont list one then you're probably out of luck. You could always get the head ported to pick up some reliable extra power and see if anybody makes +1mm valves (try kibblewhite).
 
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Old Nov 4, 2012 | 08:40 PM
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Raptor450, thanx for the link! I thought I had checked them, but I may not have...........webcamshafts has 2..........here are the specs............

.390/274' or .413/232'

I don't want to get one thats hard to start.............but I'm sure mine is worn out, 10 years of very hard running will do that..............any suggestions between the two?

Thank you very much!

I have no idea what the stock specs are.......I had no idea the lifts were this high on mc engines............small block chevys are in htis range, lmao. Big difference in durations though......................
 
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Old Nov 5, 2012 | 01:27 PM
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Well I'm no engine designer and I don't have any experience with the Kodiak, so someone else may have to help you pick one out. I do understand that a cam that is too large will supposedly kill bottom end, if your engine isn't designed for it. If you're going back with stock compression piston and no other engine mods, you may want to stay with the smaller cam.

On the other hand, I had a Warrior with the stock piston and put a big Webcam 84 grind (lots of lift & duration) cam in it, had it ported, and put +1mm larger valves in it, it had a pipe, K&N filter, and it ran good, had lots of power, no lag, started good, and bottom end power was great! Some people had told me not to go with a cam that big that it would cause problems, but it did great. I rode it like that for a few months and then tore it back down and put in the JE 366cc high compression piston in it, and that really didn't add a whole lot of power like the headwork did, mainly just more torque.

Don't forget alot of the Webcams require heavy duty valve springs so that would be another $100+ and the machine shop fees to install them unless you can instll them yourself.
 
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