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Part number: 11640-8
Product Details
Manley 11640-8 in our Camshafts Deptartment
Products specifications
Approximate Weight (g) 78
Lock Groove Quantity 3-groove
Lock Groove Style Conventional
Overall Valve Length (in) 4.705 in.
Overall Valve Length (mm) 119.507mm
Quantity Sold as a set of 8.
Swirl-Polished Yes
Undercut Stem No
Valve Head Diameter (in) 1.791 in.
Valve Head Diameter (mm) 45.500mm
Valve Head Style 5 degree dish
Valve Material NK-842 stainless steel
Valve Seat Width (in) 0.080 in.
Valve Stem Diameter (in) 0.275 in.
Valve Stem Diameter (mm) 6.985mm
Valve Tip Length (in) 0.470 in.
Valve Tip Length (mm) 11.938mm
Head Diameter: 45.5 mm
Stem Diameter: .2750"
O/A Length: 4.705"
Tip Length: .470"
Underhead Angle/Radius: 10 x 3/8"
Margin: .050"
Seat Width: .080"
Top of Head: 5 Dish
Installed Height: Stock
Weight: 78g

Manley Performance has been manufacturing the finest stainless steel valves for over 40 years. Manley valves have been the standard of the industry since their inception; a fact that still remains true today as weve entered into new markets.

Manley Performance Chevy LS, Ford Modular, and Chrysler SB HEMI stainless steel valves utilize our exceptional Race Series alloy and are manufactured to the highest quality standards.

Manley valves are designed to outflow and outperform all others even in the most severe environments. Manley stainless valves feature gorgeous yet durable chrome stems, swirl polished under heads, fully hardened tips, completely machined combustion faces, closely controlled margin heights, and exact stem to seat concentricity to render a finished product that is unsurpassed.

Manley intake valves typically are built with our original Pro-Flo design which reduces the stem diameter in the fillet area for increased airflow but also less valve weight. This concept is executed on our Chevy LS and Chrysler HEMI parts.

In certain specific applications, Manley offers our Extreme Duty exhaust material. Our Extremealloy alloy offers more hot hardness and high temperature strength than our competitors offerings. This alloy is ideal for extremely high boosted applications where the exhaust gas temperatures reach what seem like unthinkable levels. In the case of the Ford Modular 4.6L and 5.4L 3 valve cylinder head engine, we chose to use Extremealloy.

Manley stainless valves are suitable for all applications ranging from the mild street performer to the jaw dropping 1000+ horsepower race cars competing at the drag strip.

Manley has been at the forefront with these niche markets; developing better flowing and stronger aftermarket valves for the Chevy LS and Ford Modular market before our competition. We were the first to offer L-92 valves and our hollow LS valves are the very best in the industry.

Reviews
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E
I easily found the parts I needed.Parts are cheaper than buying on Ebay.If the parts arrive quick I will use this company regulary.
R
THe product is fantastic. My 03 Tacoma feels as tight as it felt back on 03 when is was brand new. Thank you for a great product and prices. I will be back to you when needs arise .
G
Mazda cargo mat for the CX-9  SUV came within 1 week.  Mat fits perfectly; just as described.   Autoplicity had the best price listed for this product; we are very pleased.
J
Autoplicity had the best price on an ARB locker. They shipped it quickly but was not able to give me the tracking number until after I had already received it.
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Fitment
Ford F-150
2004 Ford F-150 ALL / Base
2003 Ford F-150 ALL / Base
2002 Ford F-150 ALL / Base
2001 Ford F-150 ALL / Base
2000 Ford F-150 ALL / Base
1999 Ford F-150 ALL / Base
Ford F-250
1999 Ford F-250 ALL / Base / SUPER CAB
Ford F-250 Super Duty
2004 Ford F-250 Super Duty ALL / Base
2003 Ford F-250 Super Duty ALL / Base
2002 Ford F-250 Super Duty ALL / Base
2001 Ford F-250 Super Duty ALL / Base
2000 Ford F-250 Super Duty ALL / Base
1999 Ford F-250 Super Duty ALL / Base
Ford F-350 Super Duty
2004 Ford F-350 Super Duty ALL / Base
2003 Ford F-350 Super Duty ALL / Base
2002 Ford F-350 Super Duty ALL / Base
2001 Ford F-350 Super Duty ALL / Base
2000 Ford F-350 Super Duty ALL / Base
1999 Ford F-350 Super Duty ALL / Base
Ford Mustang
2004 Ford Mustang ALL / Bullitt / Cobra / GT / SVT Cobra R
2003 Ford Mustang ALL / Bullitt / Cobra / GT / SVT Cobra R
2002 Ford Mustang ALL / Bullitt / Cobra / GT / SVT Cobra R
2001 Ford Mustang ALL / Bullitt / Cobra / GT / SVT Cobra R
2000 Ford Mustang ALL / Bullitt / Cobra / GT / SVT Cobra R
1999 Ford Mustang ALL / Bullitt / Cobra / GT / SVT Cobra R
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