My local dealer has a dyno event every year, this time I remembered to take video and a couple photos.

Last year was around 77 degrees and my 250 with a pipe and jet kit pulled I think 22-23 horsepower. This year it was 75 degrees outside and the 351 with only exhaust and correct jetting pulled 27.08 hp.







Sorry about the camera angle. this is just a portion of the video, I couldn't manage to send myself the whole thing off my phone. She sounds healthy to me!!!!

 

Wow great numbers

 

One more verification of upper 20's with 351, pipe, and rejet with no lid. I am curious to see the entire dyno sheet. For instance is it SAE corrected HP ? If so then what was the correction factor ? That will tell us the uncorrected HP.. What was the TRQ curve? What was the AFR curve? -That'll show how well the CV handles the 351....

 

Its a free dyno test, i can ask if they kept any data but they ran like 50 bikes. They didnt print out anything just displayed hp.

 

Did you see the Torque numbers?

 

Great results Matt!




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No, but based on other dyno sheets people have posted I'm guessing in the upper teens lower twenties

 

Shame... Torque is the whole enchilada.. take a TRQ curve that has a peak of 22 lbft, if that peak occurs at 7500rpm that's 23.1 hp - 8000rpm = 24.7hp - 8500rpm = 26.2hp - 9000 rpm hp is 27.8 - 9500rpm = 29.35hp ... The take-away is that all you have to do is slide your torque curve up or down on the RPM scale and watch the horsepower change.

Horsepower is silly, shape of the TRQ curve is the true measure. Unfortunately that is too complex for most to grasp, so horsepower rules for the masses.

 

Thanks, I Like It

 

I'm going to have to change my tune to.....
High RPM torque curve RULES!!!!