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COMP Cams 42-602-5 Thumpr Hydraulic Camshaft, Oldsmobile 260/455
COMP Cams 42-602-5 Thumpr Hydraulic Camshaft, Oldsmobile 260/455

COMP Cams 42-602-5 Thumpr Hydraulic Camshaft, Oldsmobile 260/455

Oldsmobile V8, Hydraulic Flat Tappet Camshaft Type, 2500 to 6400 RPM Range, 294 Intake Duration

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COMP Cams 42-602-5 Thumpr Hydraulic Camshaft, Oldsmobile 260/455
COMP Cams 42-602-5 Thumpr Hydraulic Camshaft, Oldsmobile 260/455
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We estimate this item will ship on or before February 4th.
Part # 282426025
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  • This item ships directly from the manufacturer. It may take an additional 10 business days for COMP Cams to ship this item.
  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
  • This item ships via Ground Shipping only. Expedited and Air shipping options are not available.


Camshaft Type:
Hydraulic Flat Tappet
RPM Range:
2500 to 6400
Intake Duration:
Exhaust Duration:
Lobe Separation:
107 °
Grind Number:
Intake Duration (.050" Lift):
Exhaust Duration (.050" Lift):
Intake Valve Lift w/ Rocker Arm Ratio:
Exhaust Valve Lift w/ Rocker Arm Ratio:
MFG. Part #:
GTIN Code:
External Ignition Box Required:
Valve Springs Required:
Sold in Quantity:


42-602-5 - Camshaft, OL 295T H-107 T THUMPR.

Oldsmobile 260-455 c.i. 8 cyl. 1967-1990. Big Mutha' Thumpr : Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle. Hydraulic Flat Tappet Camshaft. 3 grinds to fit all of your performance needs. Unique design. Maximizes sound and mid to high RPM power. Ensures safe piston-to-valve clearance. Proven to generate 25+ RWHP gains. Does not compromise durability.

  • Three unique cam designs for each application that deliver excellent horsepower gains & broad torque curve; perfect choice for muscle cars & street rods
  • Early intake valve opening & long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note
  • Best with aftermarket converters & more rear gear
Some parts are not legal for use in California or other states with similar laws/regulations

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