Chevy BBC 454 4340 Forged Steel Crankshaft ST-4.250 M-Std RJ-2.2 RMS-2Pc [8 CW]

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MPN: PCE276.1128 UPC: 840136529651
Available Extended Warranty Eligible
US $798.90 US $939.90
You Save US $141.00 (15%)Single Points Earn 799 Points Info (outlined)

In Stock - Ships within 24 hrs

Available: 14

Item Condition: Brand NewInfo (outlined)

  • Warranty:

    12-Month Limited Worldwide Warranty


Part Number:PCE276.1128
Part Type:Crankshafts
Rear Main Seal Style:2-piece
Engine Stroke (in):4.250 in.
Crankshaft Material:Forged 4340 Steel
Engine Balance:Internal
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


PCE forged standard weight crankshafts are designed for street or race engines with substantially increased horsepower. PCE crankshafts are precision-ground, heat-treated, shot-peened, inspected, and micro-polished for superior tolerance control. PCE 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!

Brand Information

In 1979, the company was founded with Pete's Performance, which was a small speed workshop. It began by building engines for customers as a hobby, and it has now grown to include selling, assembling, manufacturing and racing high performance engine parts. Over the years, the company has grown into a worldwide high performance powerhouse. Growing from a one-man bricks-and-mortar business; to now a supply chain in which entails more than 400+ people all across the world. Today, Pete's Performance has evolved into the internationally known Speedmaster: which has distribution centres and offices is Sydney, Los Angeles and Shanghai.


Founded in Sydney Australia with one CNC Machine increasing to sixty 5-Axis CNC machines before being acquired in 2013. The Company's main focus has always been "Speed to Market", launching 1,200+ new products each year. Needing just one month to develop a new product and get it on to the shelf, compared to the six-month industry average. PCE has a policy of zero advertising, preferring to invest a percentage of revenues in new product development. These products being white-labeled to most of the biggest brands in the business.

Prop 65 Warning

This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

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Excellent product

I was a little skeptical with the price but my engine builder loved it. He has been building raving engines since the late 50s. He ask what it was and where cold he get more. He said the balance was amazing and extremely hard finish. He compared it to a $2500 crankshaft. Great job team