Pure Grunt
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We know of no budget-priced, 4.125-inch-stroke small-block cranks, but Lunati's Pro Series (PN AU211EN) sells for under $1,500. The crank is a 4340 non-twist steel forging with Lunati's Contoured Wing counterweights designed to direct windage away from the rods to improve power. The crank uses large, 2.65-inch, Chevy 400-style main journals (instead of 2.45-inch 350 mains) to improve the overlap of the crank journal to the rod journal to add strength with the long stroke. Dougan's was able to internally balance the assembly, but two small slugs of Mallory were needed. View Related Article
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