
Manley Rotating Assembly: BBC 548 4.250 Stroke/4.530/-20cc
The Manley Rotating Assembly is designed specifically for high-performance applications in big block Chevy (BBC) engines. With a stroke of 4.250 inches and a bore of 4.530 inches, this assembly is crafted to enhance your engine's efficiency and power output. Whether you're hitting the track or cruising on the street, this rotating assembly provides the reliability and performance you need.
Features
- Industry: Automotive
- Product Market: Domestic
- Prop 65 Warning: Yes
- Part Number: 38548
- Stroke: 4.250 inches
- Bore: 4.530 inches
- CC Displacement: -20cc
Benefits of the Manley Rotating Assembly
This assembly is engineered for durability and performance, ensuring that your engine can handle the demands of both street and track use. With its precision machining, you can expect improved balance and reduced vibrations, which translates to a smoother operation and enhanced longevity. The -20cc design helps optimize compression ratios, making it a great choice for those looking to maximize power output.
Fitment Information
The Manley Rotating Assembly is compatible with a variety of big block Chevy applications. It's crucial to verify fitment with your specific engine setup to ensure optimal performance. While this assembly is designed for universal fitment, we highly recommend doing your research to confirm compatibility with your vehicle.
Customer Reviews
Customers have praised the Manley Rotating Assembly for its robust construction and noticeable performance improvements. Many have reported increased horsepower and torque, making it a favorite among performance enthusiasts. Users appreciate the ease of installation and the overall quality, often noting that it exceeded their expectations in both street and racing conditions.
Important Notes
Universal Fitment: While the Manley Rotating Assembly is designed for broad compatibility, we encourage you to conduct thorough research to ensure it fits your specific vehicle application.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
Manley Performance, formerly called Manley Speed Equipment, was established in 1966 by Hank Manley shortly after his graduation from Brown University. His interest in the performance and racing traced back to 1960 when, at age 17, he rebuilt a 312 CID Ford V8 engine, installed a camshaft and three two-barrel carbs, and raced a ’56 Thunderbird on New Jersey’s streets. Initially, the company’s product lineup included stainless valves, lifters, camshafts, forged pistons, vanadium valve springs, pushrods, and timing chain kits. By 1998, Manley had outgrown its first Bloomfield, New Jersey facility and bought several acres in Lakewood, New Jersey. It was around this time that the brand’s name formally changed to Manley Performance. Nearly a decade later, the production space doubled in size.
Evolving in the Automotive SpaceLed by GM Michael Tokarchik in 2002, Manley entered the high-performance passenger car market as an OEM supplier of connecting rods for the 2003/2004 Ford SVT Mustang Cobra. Production reached 2500 rods per week without missing a single delivery date. Ford awarded Manley its highest ever supplier rating. Manley’s presence in the OEM market continued from there as a supplier for the Ford GT. After nearly 50 years since its inception, Manley continues to be globally recognized as the leading manufacturer of performance valves, connecting rods, cylinder head components, pushrods, drive and oil systems, and several other engine parts.
What is Manley’s Specialty?Manley Performance specializes in high-performance engine internals that range from stock replacements to full-on race applications. They have been the standard of the industry since their inception; a fact that still remains true now as they have ventured into new markets. Today, Manley Performance continues to re-define itself in a high-performance aftermarket industry that is constantly evolving. The brand has developed a wide range of new products for growing markets that include sport compact, Ford modular, and Chevy LS. Manley also maintains its leadership role with the traditional V8 engine business.
Get Manley Performance at Vivid RacingIf you are in need of a serious upgrade to your engine, then Manley Performance parts should be on your list. Like all of our suggested manufacturers, Manley uses the best materials available to ensure a quality part for your engine. We carry Manley connecting rods, crankshafts, pistons, and valve components. The large lineup of domestic parts includes sport compact vehicles, Ford modular engines, GM’s LS series internals, and HEMI product upgrades for Chrysler.
If you can’t find what you’re looking for or need help choosing the right part for your car, call our sales team at (480) 966-3040. We are here to make your buying experience a breeze.
Sale price | None |
Wholesale price | $3,460.67 |
Shipping |
Weight: 84.00 Length: 33 Width: 10 Height: 10 |
Product Added At | Tuesday 01 November, 2022 |
Product Modified At | Friday 11 July, 2025 |
Imported By | ETLOverride |
Last Edited By | vendordata@vividracing.com |
View In Admin |
Vendor | Inv | Cost | Retail | Jobber | MAP | Core | Updated | |||
---|---|---|---|---|---|---|---|---|---|---|
Meyer Distributing | $2,932.77 | $3,906.41 | $3,079.42 | $3,079.42 | ? | 2025-07-11 04:09:53 |
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