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Comp Cams Performance Parts
Comp Cams GK11-600-4
Comp Cams GK11-600-4 Thumpr Cam & Kit - CB 279T H-107  500x213
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Comp Cams GK11-600-4
• The perfect combination of thumping idle from the cam and gear drive whine
• Precision machined gears for timing accuracy
• Three-way crank sprocket for adjustability
• Excellent throttle response and streetability
• Ready-to-install kit is complete with bolts and lock plate

Not legal for sale or use on pollution controlled motor vehicles.
Our Price: $449.95
UPC 036584183242
Free Shipping and Handling for orders over $99!
(US only. Excluding any oversize charges.)
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Performance Parts is a Comp Cams authorized performance retailer
Product Info Related Items
Comp Cams GK11-600-4 "Thumpr" Hydraulic Flat Tappet Camshaft and Kit
Fits 396-454 cu.in. big block Chevrolet V8s

The newest line of camshafts from Comp Cams is the "Thumpr". This line of retro-fit hydraulic roller and hydraulic flat tappet cams is designed for use in engines that originally used a flat tappet cam. It will give a significant increase in horsepower over an identical flat tappet grind. The "Thumpr" uses lobe profiles and grind characteristics that produce an early valve opening, long exhaust duration, and a generous overlap to give the engine a powerful and hard hitting exhaust note and a rough idle without sacrificing power output or streetability.
Comp Cams "GK" kits for the "Thumpr" Series of cams includes the appropriate gear drive and a carefully matched set of lifters. The gear drive uses precision machined and heat treated gears made from steel billet for the ultimate in durability and timing accuracy. The crank sprocket has three keyways which enable up to 4 degrees of advance or retard.

RPM Range: 1,800 to 5,600 rpm
Duration @ .050" lift: 227/241 (int/exh)
Valve lift: .498/.483 (int/exh)
Good for high performance street use, stock converter ok,
best with 2000+ converter and gears, choppy/thumping idle.
Shipping Weight/Dimensions:
Weight:21.00 lbs
Height:5.00 in.
Length:26.00 in.
Width:10.50 in.
Shipping from warehouses in the U.S. and Canada!
Performance Parts has over 20 warehouses in the U.S. and Canada so you can get your parts duty free! Call for availability.
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Comp Cams 911-16 Single outer valve spring with damper.
For flat tappet hydraulic cam.
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Comp Cams 911-1 Valve Spring 1.525 Outer with Dampner
- Last Updated: 2014-08-27 17:14:58 -
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