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Manley Valve - Exhaust, Valve-BBC S/D 1.900
$55.56

Manley Valve - Exhaust, Valve-BBC S/D 1.900

If you're looking to upgrade your engine's performance, the Manley Exhaust Valve (part number 12817-1) is an excellent choice for your big block Chevy. This valve is designed to enhance the efficiency of your engine, ensuring optimal exhaust flow and improved power output. Whether you're building a street machine or a race-ready engine, this valve delivers the reliability and performance you need.

Key Features

  • Type: Exhaust
  • Underhead Angle: 10.00 degrees
  • Underhead Radius: 3/8 inch
  • Head Diameter: 1.900 inches
  • Industry: Automotive
  • Margin Width: 0.075 inches
  • Overall Length: 5.422 inches
  • Product Market: Domestic
  • Prop 65 Warning: Yes
  • Seat Width: 0.100 inches
  • Stem Diameter: 0.311 inches
  • Tip Length: 0.250 inches
  • Top of Head: 7 Degree Dish

Benefits of the Manley Exhaust Valve

This valve not only fits perfectly in your big block Chevy engine, but it also provides exceptional durability and performance. The precision engineering ensures that it withstands the high temperatures and pressures found in performance engines. With the right fit and specifications, you can expect improved exhaust flow, which translates to better throttle response and horsepower gains.

Fitment Information

The Manley Exhaust Valve 12817-1 is designed for a universal fit in various big block Chevy applications. However, it's always a good idea to double-check compatibility with your specific engine setup. Doing some research beforehand will help ensure that you're making the right choice for your vehicle.

Customer Feedback

Customers have praised the Manley Exhaust Valve for its quality and performance. Many have noted significant improvements in engine responsiveness and overall power. Here’s what some users have said:

  • "Installed these valves in my 454, and the difference was noticeable right away. Highly recommend!"
  • "Great quality and fit perfectly in my engine. I’m very satisfied with my purchase!"
  • "These valves are a game-changer for my build. Well worth the investment!"

Important Notes

Universal Fitment: While these valves are designed for broad compatibility, we recommend that you verify the fitment for your specific vehicle. Doing your due diligence will ensure optimal performance and satisfaction.

Proposition 65

WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Manley Logo

How did Manley Performance Start?

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 Space

Led 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 Racing

If 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.

Due to the intended usage of the products sold by Manley Performance Products, Inc., they are sold WITHOUT WARRANTY OR ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR THE INTENDED PURPOSE. Manley Performance Products, Inc. shall not, under any circumstances, be liable for any special, consequential or incidental damages, including but not limited to loss of profits or revenue, loss of other property or equipment, cost of purchased or replacement of goods, or claims by customers of the purchaser, which may arise and/or result from the sale, installation or use of these parts. Installation of parts intended for “off-highway” use could adversely affect the vehicle manufacturer’s warranty coverage. Subject to applicable state law. Some items may not be legal for use in California on pollution controlled vehicles. All weights specified are approximate and subject to manufacturing tolerances. Manley Performance Products, Inc. reserves the right to make changes in design, specifications, materials, or make product changes without incurring liability or obligation with respect to similar product previously manufactured. If technical advice is offered or given in connection with the use of any Products it will be as an accommodation to Buyer and without charge and Seller shall have no responsibilities or liabilities whatsoever for the content or use of such advice.

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