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COMP Cams 12-366-4 XFI 224/231 Hydraulic Flat Tappet Camshaft for Chevy Small Block

(GMC G2500 1979-95, Yukon 1992-95, K1500 1979-86, 1988-99, C1500 1979-86, 1988-99, K2500 1979-86, 1988-95, 1998, Jimmy 1970-91 + 259 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

12-366-4
10 reviews
Sale Price

$309.95

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Product Details

The COMP Cams XFI 12-366-4 is a hydraulic flat tappet camshaft designed specifically for Chevrolet small block engines. This camshaft delivers an aggressive performance profile with 224°/231° advertised duration, making it an excellent choice for street/strip applications seeking significant power gains without sacrificing driveability.

Key Specifications:

  • Advertised Duration: 224° Intake / 231° Exhaust
  • Duration at .050": 224° Intake / 231° Exhaust
  • Valve Lift: .450" Intake / .458" Exhaust (with 1.5:1 rocker ratio)
  • Lobe Separation Angle: 110°
  • Camshaft Type: Hydraulic Flat Tappet
  • Application: Chevrolet Small Block V8

Performance Characteristics:

  • RPM Range: 1,500-5,500 RPM
  • Aggressive idle with noticeable lope
  • Strong mid-range torque and top-end horsepower
  • Ideal for engines with 9.0:1 to 10.5:1 compression ratio
  • Works well with headers, intake upgrades, and aftermarket ignition

This XFI camshaft is manufactured from premium materials using COMP Cams' advanced grinding processes to ensure precise lobe profiles and long service life. The hydraulic flat tappet design provides quiet operation while delivering performance gains of 15-25% over stock in properly prepared engines. Recommended for use with performance valve springs, lifters, and pushrods rated for the increased valve lift and duration.

Note: This camshaft requires proper break-in procedures using COMP Cams break-in oil additive. Computer chip or carburetor recalibration recommended for optimal performance.

Products specifications

Fits

GMC G2500 1979-95, Yukon 1992-95, K1500 1979-86, 1988-99, C1500 1979-86, 1988-99, K2500 1979-86, 1988-95, 1998, Jimmy 1970-91, Savana 2500 1996-2002, Savana 1500 1996-2002, C3500 1979-86, 1988-95, K2500 Suburban 1979-86, 1992-95 + 255 more models

Advertised Exhaust Duration

280

Grind Number

268XFI H13

Cam Type

Hydraulic Flat Tappet

Exhaust Valve Lift

0.515

Intake Valve Lift

0.52

Camshaft Material

Cast Iron

Cam and Lifter Kit Upgrade

CL12-366-4

K-Kit Upgrade

K12-366-4

SK-Kit Upgrade

SK12-366-4

Camshaft Series

XFI

Usage

Street/Performance

Assembly Lubricant Included

Yes

Lifters Included

No

Valve Springs Required

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.

Advertised Intake Duration

268

Basic Operating RPM Range

2,000-6,000

Camshaft Gear Attachment

3-Bolt

LOBE SEPARATION

113

Exhaust Duration at .050 inch Lift

231

AMAZON ASIN

B000P5G5V8

Intake Duration at .050 Inch Lift

224

Engine Family

Chevrolet 262-400 c.i. 8 Cylinder (1958-1998)

Very happy with service and product.

none

Great price,fast delivery and great customer service

quick delivery

Great customer service

Great purchasing experience!

Good price. Painless checkout.

Fast and easy with my Paypal.

great experience, good price, item arrived within 4 days of purchase, would do business with again in future !

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