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Street Race Truck More... The Toolbox
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$782.99
$730.99
COMP Cams CL11-601-8 Thumpr Hyd. Roller Camshaft Kit, Chevy B/B
COMP Cams CL11-601-8 Thumpr Hyd. Roller Camshaft Kit, Chevy B/B

COMP Cams CL11-601-8 Thumpr Hyd. Roller Camshaft Kit, Chevy B/B

396 Chevy Big Block V8, 402 Chevy Big Block V8, 427 Chevy Big Block V8, 454 Chevy Big Block V8

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COMP Cams CL11-601-8 Thumpr Hyd. Roller Camshaft Kit, Chevy B/B
COMP Cams CL11-601-8 Thumpr Hyd. Roller Camshaft Kit, Chevy B/B
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We estimate this item will ship on or before January 3rd.
Part # 282CL116018
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Important Messages:

  • 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.

Details

Camshaft Type:
Hydraulic Roller Tappet
Intake Duration:
291
Exhaust Duration:
311
RPM Range:
2000 to 5800
Lobe Separation:
107 °
Intake Duration (.050" Lift):
235
Exhaust Duration (.050" Lift):
249
GTIN Code:
036584153474
MFG. Part #:
CL11-601-8
Grind Number:
291THR7
Intake Valve Lift w/ Rocker Arm Ratio:
0.558"
Exhaust Valve Lift w/ Rocker Arm Ratio:
0.542"
External Ignition Box Required:
No
Valve Springs Required:
Yes
Valve Spring Included:
No
Lifter Type:
Hydraulic Roller
Lifters Included:
Yes
Retainers Included:
No
Locks Included:
No
Valve Stem Seals Included:
No
Timing Chain and Gears Included:
No
Assembly Lubricant Included:
No
Rocker Arms Included:
No
Gaskets Included:
No
Sold in Quantity:
Kit

Info

CL11-601-8 - Cam and Lifter Kit, CB 291T HR-7 MT THUMPR.

Chevrolet 396-454 c.i. 8 CYL. 1965-1996. Hydraulic Roller-(Mutha' Thumpr) High performance street/strip, needs 9:1 CR, 2400+ stall, intake, gears, and headers, rough idle. Thumpr Retro-Fit Hydraulic Roller Camshafts. All COMP Cams Camshafts are manufactured to the strictest tolerances. Rigorously tested and checked for quality.

  • 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

Application

1967-96 Chevy 396-454
Some parts are not legal for use in California or other states with similar laws/regulations

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Videos & Articles
  • What happens when you advance or retard a camshaft? In this tech article, we explain the pros and cons of installing your cam straight up, advancing or retarding.
  • Learn the basics to engine performance like; how does a cam work? What is Valve lift, duration, lobe separation angle, and cam profiles? Afterwords selecting the right camshaft will be less of a guessing game!
  • One of the most important parts of your racing operation is the engine. This article gives a detailed overview on how to maintain your engine to get the most out of it for as long as possible. Also learn some tips to prolong the life of your engine.
  • Speedway Motors Street Tech Kevin recently installed a Gear Drive on the 454 destined for his '54 Belair.
  • Tim M. has tried to stay true to the vintage route, but sometimes, exceptions must be made. For example, the original oiling system's paper element and canister are functional, but an upgraded system will be more reliable.
  • To get the longest life and most performance out of your engine, it's important to have the valve lash set correctly. Here we show you how to set valve lash on a small block Chevy using a hydraulic lift camshaft.
  • In part 2, you will read about the Generation 4 small block series of V8s that share the same platform as the Generation 3 discussed in part 1.

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