Speedmaster®

Chevy BBC 454 Cast Steel Crankshaft ST-4.250 M-BBC RJ-2.2 RMS-2Pc Bal-Ext

PROMOTION
Promo
Speedmaster® PCE276.1089 Chevy BBC 454 Cast Steel Crankshaft ST-4.250 M-BBC RJ-2.2 RMS-2Pc Bal-Ext
US $410.50 US $482.90
You Save US $72.40 (15%)
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This Promo is for an Open-Box item

  • The same warranty as a brand new item.
  • All components included as a brand new item.
  • A new brown box.

Available for a limited time and in limited quantities. If you prefer to purchase a brand-new version of this product, please visit our authorised resellers such as Jegs or others.

MPN PCE276.1089 UPC840136529323

Product Information

Overview

These Speedmaster cast crankshafts are perfect for mildly built street engines or just to replace stock crankshafts that have seen better days. These Speedmaster crankshafts are precision-ground and micro-polished to exacting tolerances.

Specs

Brand:Speedmaster
Part Number:PCE276.1089
Part Type:Crankshaft
Product Line:Cast Nodular Iron
Rear Main Seal Style:2-piece
Engine Stroke (in):4.250 in.
Crankshaft Material:Cast 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

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.

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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.