Speedmaster®
Ford 351W Windsor 4340 Forged Crankshaft ST-3.850 M-351W RJ-2.100 Bal-Int
Product Information
Overview
Speedmaster forged standard weight crankshafts are designed for street or race engines with substantially increased horsepower.
Specs
| Brand: | Speedmaster |
| Part Number: | PCE276.1150 |
| Part Type: | Crankshaft |
| Product Line: | 4340 Forged Steel |
| Rear Main Seal Style: | Standard |
| Engine Stroke (in): | 3.850 in. |
| Crankshaft Material: | Forged 4340 Steel |
| Engine Balance: | Internal |
| 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): | 3.000 in. |
| Minimun Rod Length (in): | 6.200 in. |
| Balancer Bolt Thread Size: | Standard |
| Crankshaft Snout Style: | Standard |
| Quantity: | Sold individually. |
| Notes: | Check the bearing to crank radius clearance.Rod bearing may need to be chamfered or alternately use narrow rod bearings. |
| Tool: | Stroker Combinations |
Description
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.
Warranty Information
12-Month Limited Worldwide Warranty
Prop 65 Warning
This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
Installation Guide
Our AI assistant generates a step-by-step guide for this product — covering installation, maintenance, and troubleshooting.
This AI-generated guide is for general reference only and does not constitute official Speedmaster product documentation. Always verify fitment, torque specifications, and safety requirements before installation.