Thats what i thought too... A quote from engine builder mag...



So what does this actually mean in terms of the forces generated inside an engine? An imbalance of only 1/4 oz. (7 grams) located four inches out from the center of the crank on a counterweight will generate a force of about 7 lbs. at 2,000 rpm. At low rpm, you would hardly feel a thing. But at 8,000 rpm, that same force would grow to 114 lbs. with every revolution of the crank. If this same engine had one ounce (28 grams) of imbalance, the forces generated would be multiplied by a factor of four, generating 456 lbs. of unwanted gyrations at 8,000 rpm! That’s enough vibration to rattle your teeth and pound the heck out of the main bearings. It’s also wasted motion that goes into shaking the block instead of spinning the crankshaft. Consequently, imbalance hurts horsepower as well as smoothness and engine longevity.

Curt

Awesome info though. Curious about the signal from the cam sensor unit though. Does the cam sensor pictured produce a compatible signal to function with the LS ECM? Looks to be a hall effect unit. Any idea the timing of the required cam signal in crankshaft degrees, Advance or retard?
Thanks