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Big Mutha' Thumpr 4/7 Swap 243/257 Hydraulic Roller Cam for Chevrolet 348-409

COMP Cams

Sale price $582.18 Regular price $646.87

Additional Attributes:

  • GTIN: 00036584267775
  • C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?: Yes, but must meet tailpipe emission standards for year of vehicle.
  • C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?: Yes, but must meet tailpipe emission standards for year of vehicle.
  • C.A.R.B. Exempt for On-Road Vehicles?: No
  • C.A.R.B. Exemption Reason: N/A
  • C.A.R.B. E.O. Number: N/A
  • Camshaft Series: Thumpr 4 and 7 Swap Firing Order
  • Cam Type: Hydraulic Roller
  • Grind Number: 47S 299BMTHR-8
  • Basic Operating RPM Range: 2,500-6,400
  • Intake Duration at .050 Inch Lift: 243
  • Exhaust Duration at .050 inch Lift: 257
  • Advertised Intake Duration: 299
  • Advertised Exhaust Duration: 319
  • Lobe Separation: 108
  • Intake Valve Lift: 0.586
  • Exhaust Valve Lift: 0.571
  • Lifters Included: No
  • Valve Springs Required: Yes
  • Assembly Lubricant Included: No
  • Camshaft Gear Attachment: 3-Bolt
  • Camshaft Material: Billet Steel
  • Engine Family: Chevrolet 348-409 c.i. 8 Cylinder (1958-1965)
  • Lifter Type: Hydraulic Roller
  • Amazon ASIN: N/A
  • C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?: Yes, but must be a race/competition only vehicle.
  • C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?: Yes, but must meet tailpipe emission standards for year of vehicle.

Packaging:

  • Quantity of Each: 1
  • Package UOM: EA
  • Dimension: 24.5 x 3 x 2.75 inches

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