Speedmaster®
Chevy 400 Forged 4340 Steel Crankshaft 3.750" 2Pc-Seal External Bal.
Specs
| Brand: | Speedmaster |
| Part Number: | 1-276-001 |
| Part Type: | Crankshafts |
| Rear Main Seal Style: | 2-piece |
| Engine Stroke (in): | 3.750 in. |
| Crankshaft Material: | Forged 4340 Steel |
| Engine Balance: | External |
| Lightened: | No |
| Requires Narrow Bearings: | See notes below |
| Rod Bearings Included: | No |
| Main Bearings Included: | No |
| Rod Journal Diameter (in): | 2.100 in. |
| Main Journal Diameter (in): | 2.649 in. |
| Minimun Rod Length (in): | 5.700 in. |
| Balancer Bolt Thread Size: | Standard |
| Crankshaft Snout Style: | Standard |
| Quantity: | Sold individually. |
| Notes: | Check the bearing to crank radius clearance. Rod bearings may need to be chamfered or alternatively use narrow rod bearings. |
| Tool: | Stroker Combinations |
Description
Speedmaster forged standard weight crankshafts are designed for street or race engines with substantially increased horsepower. Speedmaster crankshafts are precision-ground, heat-treated, shot-peened, inspected, and micro-polished for superior tolerance control. Speedmaster crankshafts are also nitride-hardened for superior wear resistance, have straight-shot and chamfered oil holes, and feature lightening holes in all rod throws. These crankshafts also have a large radius on all journals for improved strength and wear resistance.
Prop 65 Warning
This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.