Speedmaster®
Chevy BBC 454 Forged Steel Crankshaft ST-4.250 M-BBC RJ-2.2 RMS-2Pc Bal-Int
Specs
| Brand: | Speedmaster |
| Part Number: | PCE276.1078 |
| Part Type: | Crankshaft |
| Product Line: | 5140 Forged Steel |
| Rear Main Seal Style: | 2-piece |
| Engine Stroke (in): | 4.250 in. |
| Crankshaft Material: | Forged Steel |
| Engine Balance: | External |
| Lightened: | No |
| Requires Narrow Bearings: | See notes below |
| Rod Bearings Included: | No |
| Main Bearings Included: | No |
| Rod Journal Diameter (in): | 2.200 in. |
| Main Journal Diameter (in): | 2.749 in. |
| Minimun Rod Length (in): | 6.385 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.