Manley Performance “PRO SERIES” crankshafts designed for the small block direct injected LT1 engine … Manufactured from a premium 4340 steel forging, these cranks feature a stock 3.622″ stroke or an increased 4.000″ stroke which can turn your 6.2L into 6.8-7.0L depending on your bore. All crankshafts are shipped with a 58 tooth reluctor wheel installed.
- 4340 material forgings
- Multi-step heat treatment process and nitrided for added strength
- Stress relieved, shot-peened and 100% magnafluxed
- Micro polished large radius journals (narrowed rod bearings required)
- Gun drilled mains and lightened rod journals for weight reduction
- Counterweights fully profiled
The stock timing crank gear may need to be chamfered to clear the larger radius on the snout of the crankshaft
Note: Manley crankshafts are not intended for use with highly boosted roots style cog belt superchargers