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COMP Cams 11-602-4 Big Mutha Thumpr Cam, Chevy 396-454, 2300-6200 RPM

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Specs
Sold in Quantity:
Each
MFG. Part #:
11-602-4
RPM range:
2300 to 3200
Intake Duration:
295
Exhaust Duration:
312
Lobe Seperation:
107
Camshaft Type:
Hydraulic Flat Tappet
Intake Duration @ .050" Lift:
243
Exhaust Duration @ .050" Lift:
257
COMP Cams 11-602-4 Big Mutha Thumpr Cam, Chevy 396-454, 2300-6200 RPM
COMP Cams 11-602-4 Big Mutha Thumpr Cam, Chevy 396-454, 2300-6200 RPM

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Watch the videos below to see how Comp Cams are made and what they sound like on a dyno.



Details

Reviews

Q & A

What's in the Box

Have you ever been to the races and heard how nasty the cams sound? COMP Cams has developed the Thumpr series of cams that give you every day drivability, but have that nasty race engine sound. Pick the cam that fits your application, add a set of COMP Cam hydraulic lifters and you will be the talk of the town.

Thumpr Application Chart (Link)

282-116024 Specs (PDF)

Item Details

2300-6200 RPM

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COMP Cams 81216 High Energy Chevy Hydraulic Lifters
SKU-28281216
                        

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In addition, High Energy Lifters have a lightweight check valve disc that allows for quicker response, which results in increased engine speed before valve float. This check valve disc also maintains added control at all engine speeds and loads.

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COMP Cams 26120-16 Beehive 1.445 Inch Valve Spring, Set of 16
SKU-2822612016
                        With a .590" maximum lift, these Beehive™ Valve Springs were designed  for hydraulic or solid flat tappet cams as well as hydraulic roller  cams. They allow big block engines to turn more RPM. COMP Cams® Beehive™  Valve Springs deliver increased valve train stability and a much  lighter valve train. This is achieved with less spring pressure for  better valve control and reduced weight of both the spring and retainer.  The unique Beehive™ shape handles valve train stress more efficiently  to eliminate damaging harmonics and increases high RPM horsepower and  durability. The oval/multi-arc wire shape places the maximum area of the  wire at the point of highest stress to handle valve train stress more  efficiently and allow better heat dissipation for longer life. Because  of the unique Beehive™ design, the valve train can handle more RPM and  more aggressive cam profiles.
  • Beehive™ Valve Springs
  • Top 1.095" O.D., .650" I.D.
  • Bottom 1.445" O.D., 1.000" I.D.
  • Seat Load: 155 @ 1.880
  • Open Load: 377 @ 1.280
  • Coil Bind: 1.230
  • Rate(lbs./in.): 370
  • Titanium Retainer: 794
  • Steel Retainer: 795
  • Cup Seat: 4696, 4697, 4698
  • Shims: 4754

Be sure to use these valve springs with our 282469716 valve spring locators.

COMP Cams 795-16 Steel Retainers, 1.095 Inch, 10 Degree
SKU-28279516
                        

Valve springs with larger diameters require retainers to handle the higher pressures developed by the springs. COMP Cams® Steel Retainers are the perfect solution to this problem. COMP® engineers used 3D CAD with FEA to design retainers with a modern and advanced contoured top profiling for lower stress, increased lift and a reduction in mass. The retainers are CNC-machined to exact tolerances using CAD/CAM software. All COMP® retainers use only high-grade SAE 4140 chromemoly steel with no lead, <0.04% sulfur and a black oxide finish to prevent corrosion. COMP Cams® Steel Valve Spring Retainers offer both unmatched looks and superior performance that set the industry standard.

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