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COMP Cams K21-229-4 Xtreme Energy Hydraulic Flat Cam K-Kit Chrysler Engine Camshaft Kit - 251/257 383-440

(Chrysler 300 1959-71, Town & Country 1959-77, Newport 1959-78, New Yorker 1959-78, Imperial 1959-75, Cordoba 1975-78, Saratoga 1959-60 + 100 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

K21-229-4
7 reviews
Sale Price

$679.95

Estimated ship date Tuesday, November 24

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Product Details

The COMP Cams K21-229-4 Xtreme Energy K-Kit is a complete high-performance camshaft package designed for Chrysler 383-440 big block engines. This comprehensive kit delivers increased lift and duration for improved mid-range to high-RPM power, making it an excellent choice for street/strip applications and performance street builds.

Camshaft Specifications:

  • Advertised Duration: 251° intake / 257° exhaust
  • Hydraulic flat tappet design for reliable street performance
  • Xtreme Energy profile optimized for aggressive idle and power gains
  • Designed specifically for Chrysler 383-440 cubic inch V8 engines

Complete K-Kit Includes:

  • High-performance camshaft
  • Matching valve springs for proper cam control
  • Steel retainers
  • Valve locks (keepers)
  • Valve stem seals
  • Timing chain set with gears
  • Assembly lube for proper break-in
  • Installation instructions and decals

This all-in-one kit eliminates the guesswork by providing every valvetrain component matched and tested together. The Xtreme Energy grind offers a noticeable performance increase over stock while maintaining acceptable street manners. Ideal for engines with aftermarket heads, intake manifolds, and headers seeking maximum performance without sacrificing reliability.

Products specifications

Fits

Chrysler 300 1959-71, Town & Country 1959-77, Newport 1959-78, New Yorker 1959-78, Imperial 1959-75, Cordoba 1975-78, Saratoga 1959-60, Ford 300 1959-71, Windsor 1959-61; Dodge Charger 1966-78, Challenger 1970-74, Dart 1960-69 + 95 more models

Advertised Intake Duration

307

Cam Type

Hydraulic Flat Tappet

Engine Family

Chrysler 383-440 c.i. 8 Cylinder (1959-1980)

Exhaust Valve Lift

0.564

Intake Valve Lift

0.564

Exhaust Duration at .050 inch Lift

251

Intake Duration at .050 Inch Lift

257

Basic Operating RPM Range

3,000-6500

Camshaft Material

Cast Iron

Kit Type

K-Kit - Complete Kit

Camshaft Series

Xtreme Energy Hi-Lift

AMAZON ASIN

B001R9HA6A

Usage

Street/Performance

Assembly Lubricant Included

Yes

LOBE SEPARATION

110

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

Lifters Included

Yes

Advertised Exhaust Duration

295

Valve Springs Included

Yes

Great price for the item. Both internet and phone conversations were quick and knowledgeable.

good

the prices were great lowest i found on the net and the shipping is fast

Great price, good e-mail communication and fast shipping. Positive experience with Autoplicity so far.

E Zee P Zee I would buy from them again.

Cheapest price by far, not the speediest shipment unfortunately.

Great pricing on almost every product! Quick process and fast shipping! Will definitely order from Autoplicity again in the future.

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