CSP SAVINGS!

CSP2026

Manley 11685-8 - Chevy LS-3/L-99 Small Block (L-92 Head) Extreme Duty Exhaust Valves (Set of 8)

Manley  |  SKU: BBPB-11685-8
Sale price $51408 Regular price $68544

PLEASE NOTE: Pictures may be representative of style, rather than the actual product. Read the description for more details.

Description

Manley 11685-8 - Chevy LS-3/L-99 Small Block (L-92 Head) Extreme Duty Exhaust Valves (Set of 8)

Exhaust Valve - Extreme Duty - 1.590 in Head - 0.313 in Valve Stem - 4.923 in Long - Stainless - L62 / L92 - GM LS-Series - Set of 8

Head Diameter: 1.590 in. - Stem Diameter: 0.3136 in. - O/A : 4.923 in.

Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted carburetor circle track competitors, these valves are your ticket to unparalleled performance.

  • Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.
  • XH-432 XtremeAlloy: The hallmark of excellence in exhaust valve material construction.
  • Built to Last: Featuring chrome stems and hard tips for exceptional longevity and wear resistance.
  • Optimized Performance: Swirl polished under head areas and fully machined combustion faces improve airflow and combustion efficiency.
Head Diameter: 1.590
Valve Head Diameter: 1.590
Stem Diameter: 0.3136
Valve Stem Diameter: 0.3136
O/A Length: 4.923
Valve Length: 4.923
Valve Tip Length: 0.160
Tip Length: 0.160
Margin Width: 0.070
Seat Width: 0.115
Top of Head: 18 Degree Dish
Valve Head Shape: 18 Degree Dish
Underhead Angle: 25.00
Underhead Radius: 7/16
Cylinder Head: L92 Cylinder Head
Valve Series: Extreme Duty Series
Valve Material: Inconel
Valve Type: Exhaust
Product Type: Engine Exhaust Valve Kit
Valve Quantity: 8
Engine Valve Quantity: 8
Engine Type: ICE
Make: Chevrolet
Engine: LS3
Engine: L99

What are people saying about CSP?