Mechanical Mastery
The bigger bore is part of the equation that equals 427 cubic inches in the new LS7 - the balance is provided by the new 4.000-inch stroke crankshaft. Forged from 4140 chromium molybdenum steel with rolled fillet radius journals, it's essentially what we'd consider a race crank, far beyond the 10-series carbon steel undercut fillet forged production cranks of yesterday.
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