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Originally Posted by DavidNJ
Why would traction affect the crank? Do cranks break on launch? With drag slicks, it should be possible to get quite a bit of traction.
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Cranks can and do break on launch. Big slicks and a big launch in a high HP motor put incredible torque strains on the block. High torque strain has a twisting effect starting from the rear axel right thru to the block. That's a good reason to have splayed 4 bolt mains and/or a stud girdle.