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Would i notice any diffrence switching from 2.0 to 3.0 in a ultra? Just looking at them they look the same other than the 2.0 is way lighter than the 3.0.
 

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I thought the numbers meant how much curvature the rear of the slide has, the higher the number, the higher the curve, allowing more air through the carb and into the motor. I may be wrong on my interpretations though.
 

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I would have to look in my high performance manual but I am pretty sure the higher the number the leaner the slide is, once I confirm this I will let you know.
 

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Ya it's the cut-away of the slide and as far as I remember you can't mess with them. What was in your sled must go back.
 

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IndyRXL said:
Would i notice any diffrence switching from 2.0 to 3.0 in a ultra? Just looking at them they look the same other than the 2.0 is way lighter than the 3.0.
What was stock???The higher the number the leaner the mixture.It effects from about 1/8 to 1/4 throttle.I,d just run whatever is stock unless your having a problem.
 

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Rainman56 said:
The higher the number the leaner the mixture.It effects from about 1/8 to 1/4 throttle.I,d just run whatever is stock unless your having a problem.
Correct.

If you are heavily modified, you could use different cuts to further fine tune the engine. If the motor is basically stock, leave it alone.
 
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