
Manley Rotating Assembly: BBC 548 4.250 Stroke/4.530/-20cc
The Manley Rotating Assembly is a high-performance component designed specifically for Big Block Chevy (BBC) engines. With a stroke of 4.250 inches and a bore of 4.530 inches, this assembly is engineered to deliver exceptional power and efficiency for your vehicle. It's an ideal choice for those looking to enhance their engine's capabilities, whether you're hitting the track or cruising on the street.
Key Features
- Industry: Automotive
- Product Market: Domestic
- Prop 65 Warning: Yes
- Title: Manley Rotating Assembly, BBC 548 4.250 STROKE/4.530/-20cc
Benefits of the Manley Rotating Assembly
This assembly is crafted for durability and performance, ensuring that your engine runs smoothly under high-stress conditions. The precision engineering allows for improved combustion efficiency, which translates to better power output and throttle response. Whether you're building a race engine or upgrading your daily driver, this rotating assembly is designed to meet your needs.
Specifications
The Manley 28548H features:
- Stroke: 4.250 inches
- Bore: 4.530 inches
- Compression Ratio: -20cc
Fitment Information
This rotating assembly is compatible with various Big Block Chevy applications. It's recommended to verify fitment with your specific engine setup to ensure optimal performance. The universal fitment means it can be adapted for various builds, but doing your research will help you confirm compatibility.
Customer Reviews
Customers have praised the Manley Rotating Assembly for its reliability and performance. Many users noted significant improvements in horsepower and torque after installation. Here’s what some of them are saying:
"I installed the Manley assembly in my race car, and the difference is night and day! Power delivery is smooth, and I couldn't be happier with the results." - Verified Buyer
"Great quality and performance. This assembly has held up well even under extreme conditions. Highly recommend!" - Satisfied Customer
Important Notes
Universal Fitment: While the Manley Rotating Assembly is designed for broad compatibility, we recommend conducting thorough research to ensure it fits your specific vehicle application. This will help confirm that this assembly meets your performance needs.
⚠ 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 | $3,491.87 |
Shipping |
Weight: 74.00 Length: 33 Width: 10 Height: 10 |
Product Added At | Tuesday 01 November, 2022 |
Product Modified At | Wednesday 06 August, 2025 |
Imported By | ETLOverride |
Last Edited By | vendordata@vividracing.com |
View In Admin |
Vendor | Inv | Cost | Retail | Jobber | MAP | Core | Updated | |||
---|---|---|---|---|---|---|---|---|---|---|
Meyer Distributing | $3,031.39 | $3,941.62 | $3,107.17 | $3,107.17 | ? | 2025-08-06 06:36:25 |
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