Speedmaster®

Chevy BBC 454 4340 Forged Steel ST-4.500 8-Counterweight Peformance Crankshaft

US $820.90 US $965.70
You Save US $144.80 (15%)
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  • 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 PCE276.1132 UPC840136529699

Product Information

Specs

Brand:Speedmaster
Part Number:PCE276.1132
Part Type:Crankshaft
Product Line:4340 Forged Steel
Rear Main Seal Style:2-piece
Engine Stroke (in):4.500 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):2.200 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:It is recommended that you check the bearing to crank radius clearance as well as all other clearances. 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.

Less rotational mass per counterweight, that's the best way to ensure an engine can RPM higher and faster safely but you can only lighten a crank so much and still be able to balance to your combination. Our line of 8- counterweight performance 4340 crankshafts are the answer, by adding two counterweights to the crankshaft we effectively reduce the size of the other 6. The reduced amount of mass in each counterweight allows the crank to spin harder , faster more efficiently. That means more power! These cranks are usually offered for over 1000.00, we have them on special and Free Shipping!

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.