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Old 02-06-2012, 09:37 AM
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The way the SBC was originally designed has served that engine well for a long time and that's what all the aftermarket and production cranks are designed around. Since there's basically only the 4/7 swap to change to (unless you were starting w/a blank sheet or were going to use a 180 degree crank or split rod journals like even/semi-even fire V6 engines use), I'd leave it be.