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Competition Cams

Competition Cams 12-602-4 Big Mutha Thumpr Camshaft 295T H-107

Part # COM12-602-4 Be the first to write a review

Big Mutha' Thumpr 243/257 Hydraulic Flat Cam Compatible with Chevrolet Small Block

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Competition Cams 12-602-4 Big Mutha Thumpr Camshaft 295T H-107

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  • "Big Mutha Thumpr" hydraulic flat tappet camshaft
  • Fits 265-400 cu.in. small block Chevrolet
  • RPM Range: 2,500 to 6,400 rpm
  • Duration @ .050" lift: 243/257 (int/exh)
  • Valve lift: .500/.486 (int/exh)
  • For street/strip use, needs 9.5:1 compression , 2800+ stall converter,
  • aftermarket intake, gears, and headers, very rough idle.

Features:

  • Great sound (early exhaust opening and more overlap)
  • Great power (new lobe designs give great area and air flow)
  • Great mid-range response (early intake closing traps more air)
  • Minimal engine vacuum - requires mods for any vacuum accessories such as power brakes
  • Designed for use only with valve train upgrades including COMP Cams® Beehive™ Valve Springs and roller rockers
  • Works best with looser converters, more rear end gear and other performance engine modifications
Advertised Exhaust Duration313
Advertised Intake Duration295
Brand Competition Cams
Camshaft StyleHydraulic Flat Tappet
Emission Code4
Exhaust Duration (at .050 inch Lift)257
Exhaust Valve Lift(w/ Factory Rocker Arm Ratio)0.486
Intake Duration (at .050 inch Lift)243
Intake Valve Lift (w/ Factory Rocker Arm Ratio)0.5
Lobe Separation (degrees)107
Operating RPM Range2500-6400
Product TypeCamshafts
UPC036584175278
Manufacturer Part Number12-602-4
Part NumberCOM12-602-4
4

This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street.

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

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