Speedmaster®
SKU:PCE276.1078
Chevy BBC 454 Forged Steel Crankshaft ST-4.250 M-BBC RJ-2.2 RMS-2Pc Bal-Int
Chevy BBC 454 Forged Steel Crankshaft ST-4.250 M-BBC RJ-2.2 RMS-2Pc Bal-Int
Regular price
$934.10 USD
Regular price
Sale price
$934.10 USD
Out of stock
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- Item Condition: Brand New
- Ships within 3 days
- 12-Month Limited Worldwide Warranty
Information
Specifications
| 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 |
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.