Description
Callies BBC crankshaft 4.250 stroke 4340 forged magnum crankshaft
- Big Block Chevy Crankshaft
- Internal Balence
- 4.250 Stroke
- 2.200 Rod Journal
- 4340 Forged Magnum
| Lightened | Yes |
| Weight | 71 lbs |
| 1 / 2 Piece Rear Main Seal | 2-Piece |
| Nitrided | Yes |
| Gun Drilled | Yes |
| Stroke | 4.250 in |
| Main Journal Diameter | 2.750 in |
| Rod Journal Diameter | 2.200 in |
| Narrowed Bearings Required | Yes |
| Intended Balance | Internal |
| Minimum Rod Length | 6.385 in |
| Snout Style | Standard |
| Counterweight Quantity | 8 |
| Balancer Bolt Thread | 1/2-20 in |
| Crankshaft Key Quantity | 2 |
| Flexplate / Flywheel Mounting Bolt Quantity | 6 |
| Alloy | 4340 |
| Material Style | Forged |
| Material | Steel |
| Color | Natural |
| Finish | Natural |
| Quantity | Each |
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