Description

Big Mutha' Thumpr 242/257 Hydraulic Flat Cam K-Kit for Ford 352-428 K-KIT - Complete Kit Includes: Camshaft Lifters Valve Springs Retainers Valve Locks Valve Stem Seals Timing Chain Set Assembly Lube (in flat tappet applications) Decals and Instructions.

• Specifications

  • Advertised Exhaust Duration: 312 DD
  • Advertised Intake Duration: 294 DD
  • Assembly Lubricant Included: Yes
  • Basic Operating RPM Range: 2 500-6 400 R3
  • Cam Type: Hydraulic Flat Tappet
  • Camshaft Material: Cast Iron
  • Camshaft Series: Thumpr
  • Engine Family: Ford 352-428 c.i. 8 Cylinder (1963-1977)
  • Exhaust Duration at .050 inch Lift: 257 DD
  • Exhaust Valve Lift: 0.515"
  • Gaskets Included: No
  • Intake Duration at .050" Lift: 242 DD
  • Intake Valve Lift: 0.531"
  • Kit Type: K-Kit - Complete Kit
  • Lifter Type: Hydraulic Flat Tappet
  • Lifters Included: Yes
  • Lobe Separation: 107 DD
  • Usage: Street/Strip
  • Valve Springs Included: Yes