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Manley Extreme Duty Series Ford 4.6L Modular V8 Exhaust Valve Kit – 38.50 mm Head Dia., 4.585 in. O/A Length, 0.2345 in. Stem


Your Price: $506.47

SKU: 11633-8

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Manley Valve – Exhaust, Valve-FD MOD E/D 38.5mm.

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.
SKU: 11633-8 Categories: , ,

GTIN: 00807298017877

Product Market

Domestic
Head Diameter

38.50 MM
Stem Diameter

0.2345 IN
O/A Length

4.585 IN
Tip Length

0.380 IN
Margin Width

0.080 IN
Seat Width

0.100 IN
Top of Head

20 Degree Dish
Underhead Angle

25.00 DEG
Underhead Radius

11/32 IN
Valve Series

Extreme Duty Series
Valve Type

Exhaust
Valve Quantity

8
Engine Detail – Web

4.6L Modular, 5.4L Modular
Instructions: Enter a value in the un-shaded boxes below as they pertain to your engine.
Note: For pistons BELOW the block @ TDC – value in box must be a POSITIVE number (.000)
Note: For pistons ABOVE the block @ TDC – value in box must be a NEGATIVE number (-.000)
Note: For a DISH piston – value in box must be a POSITIVE number (0.0)
Note: For a DOME piston – value in box must be a NEGATIVE number (-0.0)
Note: Manipulate the DOME/DISH & PISTON to DECK volumes to get the ratio you want.
Enter the number of cylinders of your engine
Bore
Finished bore of your engine
Stroke
Stroke of your engines crankshaft
Rod Length
Ctr. to Ctr. length of your connecting rods
Gasket Bore
Head Gasket bore diameter
Comp. Gasket
Compressed Head Gasket thickness
Block Deck Height
Center of main bearing bore to top of block
Top Ring Down
Top of 1st ring to top of pistons(FLAT)
Chamber Volume
Cylinder Head chamber volume in CC’s
Dome/Dish Volume
DOME (-) or DISH (+) vol. (theoretical) in CC’s
Piston to Deck
Top of BLOCK to top of piston (FLAT) @ TDC
Click “Calculate” for dimension results.
Total Volume
 
Cylinder Volume
Total cylinder volume in CC’s =
Clearance Volume
All effective vol. above block deck @ TDC in CC’s =
Gasket Volume
Volume of your head gasket in CC’s =
Top Ring Volume
Total volume above the top ring @ TDC in CC’s =
Deck Volume
Volume of area above the pistons @ TDC in CC’s =
Piston Top Land
Piston top land diameter for volume calculations =
1/2 Stroke
1/2 stroke of your engine’s crankshaft in inches =
Compression Ht.
Ctr. of piston pin to top of piston (FLAT) in inches =
Cubic Inches
Cubic inch displacement of your engine =
For the given dimensions, your compression ratio

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