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Eagle
Forged 4340 Crankshafts:
These forged 4340 steel crankshafts from Eagle Specialty Products
are great for high-performance applications. They feature non-twist
forging, go through a multi-stage heat-treatment process, and are
stress-relieved and shot-peened. These cranks are X-rayed, magnafluxed,
and sonic tested, so you know you're getting a top-quality piece.
Each crankshaft has cross-drilled and chamfered oil holes for improved
oiling, a .125 in. radius on rod and main journals for increased
strength, and the journals are precision-ground and micro-polished
to less than 5 RA. A target bobweight of +/- 2 percent greatly reduces
balancing time.
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