Manley Head Diameter: 1.575 in. - Stem Diameter: .3136 in. - O/A : 4.923 11681-8
Specifications:
| Engine Valve Quantity | 8 |
| Industry | Automotive |
| Out of Stock Message | Call for Availability |
| Title | Manley Valve - Exhaust, Valve-LS1 E/D 1.575 |
| Prop 65 Yes/No | Yes |
| Prop 65 (C, R or CR) | CR |
| Prop 65 - Short Label | Prop 65 Warning Label.JPG |
| Engine Type | ICE |
| Make | Chevrolet |
| Engine | LS1 |
| Product Market | Domestic |
| Head Diameter | 1.575 |
| Valve Head Diameter | 1.575 |
| Stem Diameter | 0.3136 |
| Valve Stem Diameter | 0.3136 |
| O/A Length | 4.923 |
| Installed Height | Stock |
| Valve Length | 4.923 |
| Valve Tip Length | 0.175 |
| Tip Length | 0.175 |
| Margin Width | 0.065 |
| Seat Width | 0.115 |
| Top of Head | 18 Degree Dish |
| Valve Head Shape | 18 Degree Dish |
| Underhead Angle | 25.00 |
| Underhead Radius | 7/16 |
| Weight | 95 |
| Cylinder Head | LS6 Cylinder Head |
| Valve Series | Extreme Duty Series |
| Valve Material | Inconel |
| Valve Type | Exhaust |
| Product Type | Engine Exhaust Valve Kit |
| Valve Quantity | 8 |
| Description_SHO | Valve - Exhaust |
| Description_INV | Valve-LS1 E/D 1.575 |
| Description_ASC | Manley Valve - Exhaust, Valve-LS1 E/D 1.575. |
| Description_LAB | Manley Extr. Dty Ex. Vlv Kit - Chevrolet Gen III/IV Small Block - LS1, LS2, LS6 |
| Description_DES | Manley Valve - Exhaust, Valve-LS1 E/D 1.575 |
| Description_EXT | Head Diameter: 1.575 in. - Stem Diameter: .3136 in. - O/A : 4.923 |
| Description_MKT | 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. |
| Description_FAB | 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. |
| Description_FAB | XH-432 XtremeAlloy: The hallmark of excellence in exhaust valve material construction. |
| Description_FAB | Built to Last: Featuring chrome stems and hard tips for exceptional longevity and wear resistance. |
| Description_FAB | Optimized Performance: Swirl polished under head areas and fully machined combustion faces improve airflow and combustion efficiency. |
| Description_TLE | Manley Extreme Duty Series Exhaust Valve Kit - Chevrolet Gen III/IV Small Block - LS1, LS2, LS6 |
| Description_DEF | Engine Exhaust Valve |