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Comp Cams Performance Parts
Comp Cams 12-556-4
Comp Cams 12-556-4 Nitrous HP Cam CS NX262H-13 600x337
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Comp Cams 12-556-4
• Designed specifically to get the most out of power adders
• Valve timing for improved cylinder scavenging
• Also works well in turbocharged applications
• Ideal for high performance street use or bracket racing

Not legal for sale or use on polluton controlled motor vehicles.
Our Price: $139.95
UPC 036584023838
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(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 12-556-4 "Nitrous HP" Hydraulic Flat Tappet Camshaft
Fits 265-400 cu.in. small block Chevrolet V8s

"Nitrous HP" cams are designed to get the most out of engines that use power adders such as nitrous oxide or superchargers. The carefully tailored profile of this cam will also work without nitrous, but it will show the most gain on a nitrous equipped engine. This cam has valve timing that opens the exhaust valve a few degrees earlier to better scavenge the larger amounts of exhaust gases that result for the use of nitrous or a supercharger.


RPM Range: 1,600 to 5,900 rpm
Duration @ .050" lift: 218/130 (int/exh)
Valve lift: .462/.480 (int/exh)
Good for high performance street use, with 100-150 HP nitrous kit or small blower.
Shipping Weight/Dimensions:
Weight:9.00 lbs
Height:3.00 in.
Length:24.50 in.
Width:3.00 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 812-16 "High Energy" hydraulic valve lifters
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Comp Cams 981-16 Single Outer Valve Springs
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Comp Cams 2100 "Magnum" Double roller timing chain set.
Fits 1955-1991, 265-400 cu.in Chevrolet V8s
(Except those with factory roller cam)
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Comp Cams 1412-16 "Magnum" roller rocker arms.
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Comp Cams 503-16
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Comp Cams 503-16 Positive stop teflon valve stem seals
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Comp Cams 601-16 Valve Locks
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Comp Cams 159 Camshaft Break-In Lube 12oz
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Comp Cams 3100 "Hi-Tech" roller timing chain set.
Fits 1955-1991, 265-400 cu.in. Chevrolet V8s, and 1978-1986, 90 degree V6 engines (except those with factory roller cam)
Comp Cams 501-16
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Comp Cams 501-16 Valve Guide Seals
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Alternate Items
Comp Cams 742-16
$52.95
Comp Cams 742-16 Steel valve spring retainer
Fits 283-400 cu.in. Chevrolet V8 and 90 degree V6
Comp Cams 812-16
$76.95
Comp Cams 812-16 "High Energy" hydraulic valve lifters
Fits both small and big block Chevrolet V8s.
Comp Cams 981-16
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Comp Cams 981-16 Single Outer Valve Springs
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Comp Cams 601-16
$12.97
Comp Cams 601-16 Valve Locks
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$99.97
Comp Cams 7372-16 "Magnum" pushrods.
Fits 265-400 cu.in. Chevrolet V8s.
Comp Cams 648-16
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Comp Cams 648-16 11/32 7 degree Machined Steel Lock
Comp Cams 787-16
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Comp Cams 787-16 Steel valve spring retainers
For use with Comp Cams 26915 or 26918 valve springs in non-LS1 engines.
Comp Cams 858-16
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Comp Cams 858-16 "Pro Magnum" Hydraulic valve lifetrs.
Fits both small and big block Chevrolet V8s.
Comp Cams 26981-16
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Comp Cams 26981-16 Beehive Valve Spring
Fits most small block Chevrolet V8s
- Last Updated: 2014-08-27 17:14:22 -
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