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COMP Cams K11-556-4 Nitrous HP Hydraulic Flat Tappet Camshaft Complete Kit for Chevy Big Block 396-454

(Chevrolet Camaro 1967-72, Corvette 1967-74, Impala 1967-76, Malibu 1967, 1973-75, C1500 1990-93, Chevelle 1967-73, Blazer 1973-74 + 104 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

K11-556-4
11 reviews
Sale Price

$648.44

Estimated ship date Friday, November 27

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Product Details

The COMP Cams K11-556-4 Nitrous HP Camshaft Complete Kit is specifically engineered to maximize power output when running nitrous oxide systems on Chevrolet Big Block 396-454 cubic inch engines. This hydraulic flat tappet camshaft kit delivers exceptional performance for high-performance street applications utilizing 100-150 horsepower nitrous kits or small blower setups.

Key Specifications:

  • Grind Number: NX262H-13
  • Duration at .050" Lift: 218° intake / 230° exhaust
  • Advertised Duration: 262° intake / 280° exhaust
  • Valve Lift: .505" intake / .520" exhaust
  • Lobe Separation Angle: 113 degrees
  • Operating RPM Range: 1,600-5,900 RPM
  • Lifter Type: Hydraulic flat tappet

Advanced Design Features:

  • Unique intake cam lobes optimize cylinder filling for more complete combustion
  • Spread exhaust lobes decrease valve overlap and maximize combustion chamber scavenging
  • Wider lobe separation and added exhaust duration help shift power to higher RPM ranges
  • Early exhaust opening effectively purges spent gases from nitrous or forced induction applications
  • Maintains excellent throttle response and torque characteristics for street use

Complete K-Kit Includes:

  • Hydraulic flat tappet camshaft
  • Hydraulic lifters
  • Performance valve springs
  • Valve spring retainers
  • Valve locks (keepers)
  • Valve stem seals
  • Timing chain and gear set
  • Assembly lubricant
  • Installation instructions and decals

This complete kit is designed for Chevrolet Big Block engines (396, 402, 427, 454 cubic inch) from 1965-1996. Recommended setup includes a 2500+ RPM stall converter, headers, and appropriate rear gear ratios. Manufactured to COMP Cams' strict tolerances and rigorously tested for quality and reliability.

Products specifications

Fits

Chevrolet Camaro 1967-72, Corvette 1967-74, Impala 1967-76, Malibu 1967, 1973-75, C1500 1990-93, Chevelle 1967-73, Blazer 1973-74, C10 Pickup 1968-74, Caprice 1967-76, C10 1975-80, El Camino 1967-75, Monte Carlo 1970-75 + 99 more models

Advertised Exhaust Duration

280

Basic Operating RPM Range

1,600-5,900

Cam Type

Hydraulic Flat Tappet

Intake Valve Lift

0.505

Exhaust Valve Lift

0.52

Camshaft Material

Cast Iron

Kit Type

K-Kit - Complete Kit

Camshaft Series

Nitrous HP

AMAZON ASIN

B001GETD5W

Assembly Lubricant Included

Yes

Lifter Type

Hydraulic Flat Tappet

Prop 65

WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov

C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for On-Road Vehicles?

No

C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?

Yes, but must be a race/competition only vehicle.

C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

Gaskets Included

No

Advertised Intake Duration

262

Camshaft Gear Attachment

3-Bolt

LOBE SEPARATION

113

Exhaust Duration at .050 inch Lift

230

Lifters Included

Yes

Valve Springs Included

Yes

Usage

Street/Strip

Intake Duration at .050 Inch Lift

218

Engine Family

Chevrolet 396-454 c.i. 8 Cylinder (1967-1996)

I was very happy thank you

I found the tire I have on my car now to match

Quick and easy

good price, fast shipping

Shipping price is a bit excessive.

Great prices. Fast Shipping. I would definitely do business again.

I ordered online with autoplicity via google checkout. It was easy and a real good price compared to other sites. The communication was great every step of the way. Order confirmation, order tracking number and shipping number. Super fast shipping for a heavy item (springs)and was in perfect condition. I Will shop with them again.

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Great prices on the products I want. Quick shipping.

good and fast

awesome price and super fast shipping. I will use again. Thanks

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