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Engine Kit, Steel, 0.415" Lift, HD®, Knucklehead™ 1936-1947

Engine Kit, Steel, 0.415" Lift, HD®, Knucklehead™ 1936-1947


Regular price $225.66 USD
Regular price $225.66 USD Sale price $225.66 USD
Sale Sold out

California Prop 65


  • Save time money when purchasing this kit
  • One package, everything you need for a cylinder head overhaul
  • Double your service life over OEM using KPMI® Valvetrain products
  • All the components in this kit would cost more if bought individually

Kit Includes:

  • KPMI® complete Valve Spring Kit that meets or exceeds OEM specifications
  • Seals (where applicable)
  • Keeper (where applicable)
  • KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.
Installation Instructions Click Here
Type Intake/ Exhaust
Retainer Material H.T. Steel
Valve Lift 0.415"
Installed Height 1.375"
Seat Pressure 127#
Open Pressure 270#
@ Lift 0.415"
Valve Type Intake / Exhaust
Valve Material Black Diamond™ Stainless
Coating Black Nitroneg
Intake Head Diameter 44.45mm / 1.750”
Intake Stem Diameter 9.6mm / 0.3765"
Intake Tulip 23°
Intake Overall Length 3.590"
Exhaust Head Diameter 44.45mm / 1.750”
Exhaust Stem Diameter 9.6mm / 0.3760"
Exhaust Tulip 27°
Exhaust Overall Length 3.670"
Remarks Standard
Unique Identifier No. FR327789_01GAUS
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