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COMP Cams Nitrided Camshaft CB XE284H-1

SKU: CCA11-250-20

Camshafts

CCA Camshafts...

COMP Cams Nitrided Camshaft CB XE284H-1

SKU: CCA11-250-20

Camshafts

CCA Camshafts...

A$922.52
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Description

Xtreme Energy NIT 240/246 Hydraulic Flat Tappet Cam for Chevy Big Block 396-454 (Nitrided) street/strip Applications.

Product Overview

*Xtreme Energy Camshafts* * Quicker opening lobe profiles deliver increased responsiveness & more area under the lift curve * More vacuum allows an increase in duration for improved performance and assists power brakes * Excellent performance in street carbureted applications * Best performance with aftermarket intake manifolds, headers, lower gear ratios, etc.

Product Details

Advertised Exhaust Duration:296
Advertised Intake Duration:294
Amazon ASIN:B002EDX2TW
Assembly Lubricant Included:Yes
Basic Operating RPM Range:2,300-6,500
C.A.R.B. E.O. Number:N/A
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.
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. Exemption Reason:N/A
California Proposition 65:WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov
Cam Type:Hydraulic Flat Tappet
Camshaft Gear Attachment:3-Bolt
Camshaft Material:Nitrided Cast Iron
Camshaft Series:Xtreme Energy
Description:Xtreme Energy NIT 240/246 Hydraulic Flat Cam for Chevrolet Big Block 396-454
Engine Family:Chevrolet 396-454 c.i. 8 Cylinder (1967-1996)
Exhaust Duration @ .050 in.:246
Exhaust Duration at .050 inch Lift:246
Exhaust Duration:296
Exhaust Valve Lift(in):0.578
Exhaust Valve Lift:0.578
Grind Number:XE284H
Intake Duration @ .050 in.:240
Intake Duration at .050 Inch Lift:240
Intake Duration:294
Intake Valve Lift(in):0.574
Intake Valve Lift:0.574
Lifter Type:Hydraulic Flat Tappet
Lifters Included:No
Lobe Separation:110
Part Number:cca11-250-20
RPM Range:2200-7200
Title:Xtreme Energy NIT 240/246 Hydraulic Flat Cam for Chevrolet Big Block 396-454
Usage:Street/Strip
Valve Springs Required:Yes

Application Summary

Chevrolet GEN IV 396-454 Big Block Engines Originally Equipped with Flat Tappet Camshafts

Part Type

Engine Camshaft

Data: v4.2 - Upd: 2026-10-13 17:50:15

Specifications

Product Attributes - Brand
COMP Cams
Product Attributes - Manufacturer's Part Number
11-250-20
Product Attributes - Part Type
Camshafts
Product Attributes - Product Line
COMP Cams Xtreme Energy Camshafts
Product Attributes - UPC
036584177807
Product Attributes - Cam Style
Hydraulic flat tappet
Product Attributes - Camshaft Use
Street/Strip
Product Attributes - Basic Operating RPM Range
2,300-6,500
Product Attributes - Intake Duration at 050 inch Lift
240
Product Attributes - Exhaust Duration at 050 inch Lift
246
Product Attributes - Duration at 050 inch Lift
240 int./246 exh.
Product Attributes - Advertised Intake Duration
284
Product Attributes - Advertised Exhaust Duration
296
Product Attributes - Advertised Duration
284 int./296 exh.
Product Attributes - Intake Valve Lift with Factory Rocker Arm Ratio
0.574 in.
Product Attributes - Exhaust Valve Lift with Factory Rocker Arm Ratio
0.578 in.
Product Attributes - Valve Lift with Factory Rocker Arm Ratio
0.574 int./0.578 exh.
Product Attributes - Lobe Separation (degrees)
110
Product Attributes - Remanufactured
No
Product Attributes - Computer-Controlled Compatible
No
Product Attributes - Grind Number
XE284H-10
Product Attributes - Valve Springs Required
Yes
Product Attributes - Quantity
Sold individually.
Product Attributes - Notes
Nitrided version camshaft.

Reference Information

Brand Name/s Comp Cams
StreetFX SKU cca11-250-20
SFX Item ID 4118412
Supplier Item Code 4118412
Manufacturer SKU 11-250-20
Manufacturer UPC 36584177807
Alternative References c10, s10, XE284H-1

Compatibility

Chevrolet GEN IV 396-454 Big Block Engines Originally Equipped with Flat Tappet Camshafts

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