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Manley 11673-8 Severe Duty Stainless Steel Exhaust Valves for LS1/LS2/LS6 1.550" 8mm

Manufacturer

Picture for manufacturer Manley

Part Number

11673-8
7 reviews
Sale Price

$301.07

Estimated ship date Thursday, November 19

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Product Details

The Manley 11673-8 Severe Duty exhaust valves are engineered specifically for Chevrolet LS1, LS2, and LS6 engines with LS6 cylinder heads. These high-performance stainless steel valves are designed for street performance and racing applications operating below 8000 RPM, delivering exceptional durability and flow characteristics.

Key Specifications:

  • Head diameter: 1.550 inches
  • Stem diameter: 8mm (0.3136 inches)
  • Overall length: 4.923 inches (stock height)
  • Material: XH-428 stainless steel alloy
  • Underhead angle: 25° with 7/16" radius
  • Margin: 0.065 inches
  • Seat width: 0.115 inches
  • Tip length: 0.175 inches
  • Top of head: 18° dish design

Advanced Features:

  • Manufactured from exclusive XH-428 alloy with nearly double the tensile strength of competitor materials at 1500°F
  • Chrome-plated stems with 0.0002" thick hard coating for superior wear resistance
  • Hard tips that resist cracking and erosion better than traditional stellite
  • OEM-style radius keeper grooves for reliable retention
  • Swirl polished and precision machined for maximum flow optimization
  • Pro Flo design for enhanced exhaust flow performance

Manley Performance Products has been a leader in racing valve manufacturing since 1966, and this Severe Duty series represents their commitment to providing professional-grade components for serious performance enthusiasts. Each set includes 8 exhaust valves.

great transaction, very fast shipping

Fast and easy checkout process and incredible pricing. Thanks Autoplicity!

Autoplicity made finding and ordering my parts simple and easy! Not only did they have the parts in stock and ready to ship, but they were also the cheapest BY FAR saving me nearly 30%!<br><br>The information that they had on the product pages was 100% accurate unlike other car part websites.<br><br>Autoplicity has made a customer for life!

Quick, cheap, and accurate. What else do you need?

Quick shipping, good communication, low price, would purchase again from this company.

Super fast shipping, exactly as ordered, no drama, problems or complications

Autoplicity has the best prices around

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