Manley Valve - Exhaust, Valve-S/D 1.600, .3136 STEM
Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake), offering unmatched tensile strength compared to competitive alloys. In fatigue testing at 40,000 psi and 1400°F, Manley exhaust valves endured 100 million cycles, while competitors failed after just 100,000, proving a 1,000× longer fatigue life. Each valve features chrome stems, hard tips, and swirl-polished underheads with fully machined combustion faces for superior airflow, efficiency, and wear resistance. Built for those who demand race-winning strength and precision, Manley Severe Duty® Valves set the industry standard for performance and endurance.
Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake), offering unmatched tensile strength compared to competitive alloys. In fatigue testing at 40,000 psi and 1400°F, Manley exhaust valves endured 100 million cycles, while competitors failed after just 100,000, proving a 1,000× longer fatigue life. Each valve features chrome stems, hard tips, and swirl-polished underheads with fully machined combustion faces for superior airflow, efficiency, and wear resistance. Built for those who demand race-winning strength and precision, Manley Severe Duty® Valves set the industry standard for performance and endurance.
- Proven fatigue strength for extreme performance
- Chrome stems and hard tips enhance durability
- Exotic alloys for superior tensile strength, reliability, and longevity
- Swirl polishing and machined faces improved airflow/optimized efficiency
Information:
Manley Valve - Exhaust, Valve-S/D 1.600, .3136 STEM .| Attributes | |
| California Proposition 65 | WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov |
| Category Hierarchy | Valves>Severe Duty, Valves>Stainless Steel>Severe Duty |
| Country of Origin (Primary) | CN |
| Cylinder Head | AFR Cylinder Head, AFR Cylinder Head |
| EBAY Category ID | 33621 |
| Emission Code | Off Road |
| Engine | Small Block, Small Block |
| Engine - Web | Small Block, Small Block |
| Engine Detail - Web | Small Block, Small Block |
| Engine Family | Small Block, Small Block |
| Engine Type | ICE, ICE |
| Engine Valve Quantity | 1, 1 |
| Hazardous Material Code | N |
| Head Diameter | 1.600, 1.600 |
| Industry | Automotive, Automotive |
| Life Cycle Status Code | Available to Order |
| Make | Chevrolet, Chevrolet |
| Make - Web | Chevrolet, Chevrolet |
| Margin Width | 0.070, 0.070 |
| O/A Length | 4.950, 4.950 |
| Out of Stock Message | Call for Availability, Call for Availability |
| Product Market | Domestic, Domestic |
| Product Type | Engine Exhaust Valve, Engine Exhaust Valve |
| SDR Required Flag | N |
| Seat Width | 0.100, 0.100 |
| Stem Diameter | 0.3136, 0.3136 |
| Tip Length | 0.260, 0.260 |
| Title - Web | Manley Severe Duty? Series Chevy Small Block Exhaust Valve - 1.600 in. Head Dia., 4.950 in. O/A Length, 0.3136 in. Stem, Manley Severe Duty? Series Chevrolet Small Block Exhaust Valve - 1.600 in. Head Dia., 4.950 in. O/A Length, 0.3136 in. Stem |
| Top of Head | 18 Degree Dish, 18 Degree Dish |
| Type | Exhaust |
| Underhead Angle | 25.00, 25.00 |
| Underhead Radius | 7/16, 7/16 |
| Valve Head Diameter | 1.600, 1.600 |
| Valve Head Shape | 18 Degree Dish, 18 Degree Dish |
| Valve Length | 4.950, 4.950 |
| Valve Material | Stainless Steel, Stainless Steel |
| Valve Quantity | 1, 1 |
| Valve Series | Severe Duty? Series, Severe Duty? Series |
| Valve Stem Diameter | 0.3136, 0.3136 |
| Valve Tip Length | 0.260, 0.260 |
| Valve Type | Exhaust, Exhaust |
| Warranty Time | 30 |
| GTIN | 00807298081939 |