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| Brand | | Manley |
| Manufacturer's Part Number | | 11521-1 |
| Part Type | | Valves |
| Product Line | | Manley Race Series Stainless Steel Valves |
| Summit Racing Part Number | | MAN-11521-1 |
| | |
| Valve Head Diameter (in) | | 1.500 in. |
| Valve Head Diameter (mm) | | 38.100mm |
| Undercut Stem | | Yes |
| Swirl-Polished | | Yes |
| Overall Valve Length (in) | | 4.911 in. |
| Overall Valve Length (mm) | | 124.739mm |
| Valve Stem Diameter (in) | | 0.341 in. |
| Valve Stem Diameter (mm) | | 8.661mm |
| Valve Tip Length (in) | | 0.250 in. |
| Valve Tip Length (mm) | | 6.350mm |
| Valve Material | | XH-426 stainless steel |
| Lock Groove Quantity | | 1-groove |
| Lock Groove Style | | Conventional |
| Approximate Weight (g) | | 89 |
| Valve Head Style | | 7 degree dish |
| Valve Seat Width (in) | | 0.100 in. |
| Quantity | | Sold individually. |
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Manley Race series performance valves are a great choice for your bracket, oval track, or high performance street engine. All valves are made from stainless steel (intakes are NK-842; exhausts are XH-426) with chrome stems and hardened valve tips. In addition to being made from high-quality materials, Race series valves are swirl polished and fully machined.
Warranty
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| Valve Fitment | | Engine specific |
| Make | | CHEVROLET |
| Beginning Year | | 1957 |
| Ending Year | | 1967 |
| Engine Type | | V8 |
| Liter | | 4.6 |
| CID | | 283 |
| Engine Size | | 4.6L/283 |
| Engine Family | | Chevy small block Gen I |
| Valve Location | | Exhaust |
| Valve Installed Length | | Stock |
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| Valve Fitment | | Engine specific |
| Make | | CHEVROLET |
| Beginning Year | | 1976 |
| Ending Year | | 1999 |
| Engine Type | | V8 |
| Liter | | 5.0 |
| CID | | 305 |
| Engine Size | | 5.0L/305 |
| Engine Family | | Chevy small block Gen I |
| Valve Location | | Exhaust |
| Valve Installed Length | | Stock |
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Suggested Parts: Parts that may improve the performance or installation of part number MAN-11521-1.
Results 1-1 of 1
Organizer Tray, Valvetrain, Kit
Part Number:
SUM-CSUM2600
Estimated Ship Date: 5/29/2012