If you're looking to enhance your engine's efficiency and performance, the Manley Exhaust Valve - BBC E/D 1.880 is a fantastic choice. Designed specifically for big block Chevy engines, this valve is engineered to withstand the rigors of high-performance applications, ensuring your vehicle runs smoothly and efficiently.
This exhaust valve is designed to optimize exhaust flow, which can lead to improved engine performance and efficiency. Its robust construction ensures durability, making it suitable for both street and race applications. With the right fitment, you can expect better throttle response and a more powerful engine performance.
The Manley 12743-8 Exhaust Valve is compatible with big block Chevy engines, making it a versatile option for many automotive enthusiasts. While this valve is designed for universal fitment, we highly recommend researching your specific vehicle application to ensure compatibility.
Customers have praised the Manley Exhaust Valve for its quality and performance. Many users report noticeable improvements in engine responsiveness and overall power. One satisfied customer noted, "After installing the Manley valves, my engine feels like it has a new lease on life!" Another reviewer mentioned, "These valves are a game changer for my build—highly recommend!"
Universal Fitment: While these valves are designed for broad compatibility, please ensure to verify that they will work with your specific engine setup. Doing your due diligence will help confirm that the Manley 12743-8 is the right choice for your vehicle.
⚠ 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.