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A lot of time when they say Cleveland style crank they are referring to the crank main bearing size. Cleveland is 2.75" and the Windsor is 3.00". The 3" bearing "see" 20% more friction than the 2.75" bearing. Thus the Cleveland will turn higher RPMs easier. You can buy a FMS spacer kit for the Windsor block for $70, but you have to get it line bored ($150 around here). Now you have the best of both blocks. Most NASCAR motors use the 2.75" mains.
Dwight
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''Life's tough.....it's even tougher if you're stupid.'' ~ John Wayne
"Happiness Is A Belt-Fed Weapon"
life's goal should be; "to be smarter than inanimate objects"
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