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Thumpr Hydraulic Flat Tappet Camshaft <br> 67-90 Oldsmobile 260-455
COMP CAMS
®

Thumpr Hydraulic Flat Tappet Camshaft
67-90 Oldsmobile 260-455

SKU: CCA-42-602-5
$341.95

Availability: Out Of Stock

Specification
Product Description Reviews
Description:

Big Mutha' Thumpr 242/257 Hydraulic Flat Cam for Oldsmobile 260-455. Street/strip, needs 9.5:1 compression, 2800+ stall, intake, Gears and headers, very rough idle.

Features:

  • Camshaft Series: Thumpr
  • Lobe Separation: 107 DD
  • Intake Valve Lift: 0.512 IN
  • Exhaust Valve Lift: 0.497 IN
  • Lifters Included: No
  • Valve Springs Required: Yes
  • Assembly Lubricant Included: Yes
  • Camshaft Gear Attachment: 1-Bolt
  • Camshaft Material: Cast Iron
  • Engine Family: Oldsmobile 260-455 c.i. 8 Cylinder (1967-1990)
  • Cam and Lifter Kit Upgrade: CL42-602-5
  • Usage: Street/Strip
  • K-Kit Upgrade: K42-602-5
  • Lifter Type: Hydraulic Flat Tappet
  • Cam Type: Hydraulic Flat Tappet
  • Grind Number: 295TH7
  • Grind Number: 295TH7
  • Basic Operating RPM Range: 2,500-6,400
  • Intake Duration at .050 Inch Lift: 242 DD
  • Exhaust Duration at .050 inch Lift: 257 DD
  • Advertised Intake Duration: 294 DD
  • Advertised Exhaust Duration: 312 DD


  • Package Includes:

  • Engine Camshaft


  • WARNING: This product contains chemicals known to the State. For more information go to https://www.p65warnings.ca.gov/