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RACE SERIES VALVES - learn more about our valves
Manley valves have set the standard for excellence in quality, material and design in the performance world for four decades. Manufactured from proven Race Master materials, Manley valves feature chrome stems, hard tips, fully machined surfaces and swirl polished radii. Many applications are Pro Flow design for maximum air flow.
Part No. Type Head Diameter Stem Diameter Installed Height O/A Length Tip Length Underhead Angle/Radius Margin Seat Width Top of Head Wgt/Grams
  Chrysler HEMI 5.7L
11665-8 Exh. 1.555" .3125" Stock 4.845" .120" 25° x 1/2" .065" .100" 20° Dish 88
11667-8 Exh. 1.575" .3125" Stock 4.845" .120" 25° x 1/2" .065" .100" 20° Dish 90
11664-8 Int. 2.000" .3125" Stock 4.955" .120" Pro Flo: 12° x 3/8" .050" .085" 7° Dish 103
11666-8 Int. 2.020" .3125" Stock 4.955" .120" Pro Flo: 12° x 3/8" .050" .085" 7° Dish 104
  Chrysler HEMI 6.1L
11669-8 Exh. 1.595" .3125" Stock 4.925" .120" 25° x 1/2" .065" .100" 20° Dish 91
11671-8 Exh. 1.625" .3125" Stock 4.925" .120" 25° x 1/2" .065" .100" 20° Dish 93
11668-8 Int. 2.080" .3125" Stock 4.990" .120" Pro Flo: 12° x 3/8" .050" .085" 7° Dish 108
11670-8 Int. 2.100" .3125" Stock 4.990" .120" Pro Flo: 12° x 3/8" .050" .085" 7° Dish 111
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