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Manley BBC Pro Series Forged Crankshaft

$1,156.34

Available

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Variants:

572 - 4.375" Stroke [190320]
632 - 4.750" Stroke [190280]

Manley Pro Series crankshafts can make your short block bulletproof.

They feature forged 4340 construction and undergo a multi-step heat-treatment process and are then nitrided for added strength. The crankshafts are stress-relieved, shot-peened, and magnafluxed.

Manley Pro Series crankshafts have micro-polished large .125 in. radius journals, gun-drilled mains, and lightened rod journals for weight reduction.

The counterweights are fully profiled and they are designed for internal balancing.

Crank Polishing Upgrade

Extends bearing life, reduces oil temp, frees up a slight amount of average horsepower. This is a very low cost upgrade, and in the world of mass production, most cranks do not come with a true polished finish. This is why most machine shops have a machine to do this. The difference is dramatic between a crank right out of the box and one that we have polished. Bearing companies claim that cranks that have better finishes on the journals will survive the break-in better, and have much longer bearing life. We do a two-step process and bring the RA numbers down in the single digit range. We have the most advanced crank polishing machine on the market.

Cost for the crank polishing upgrade is $39.50. Before you finalize your purchase of this crankshaft you may add this upgrade to your shopping cart.