Comp Cams  Xtreme Energy  Hydraulic Flat Tappet Camshafts
InfoVehicle Info Needed
COMP CAMSPART NUMBER: 249-11-250-20

Comp Cams Xtreme Energy Hydraulic Flat Tappet Camshafts

$42295
ShippingShips on 10/19/2026
Lowest PriceLowest Price Guarantee

Chevy 396-454ci Big Block 1965-96
XTREME ENERGY 284H-10 Hydraulic Flat Tappet Nitrided Camshaft
Lift .574"/.578"
Duration 284°/296°
RPM Range 2300 to 6500
Lobe Center Angle 110°

COMP Cams is the only aftermarket valve train company in America that provides a Pro Plasma Nitriding Service in-house. Nitriding is a process by which nitrogen is introduced into iron or steel, causing a material's surface hardness to be increased for improved initial and long-term wear characteristics. It is recognized by metallurgists worldwide as the best way to increase the hardness and lubricity of flat tappet cams to enhance break-in and durability. Don't get blinded by shiny surface finishing or heat-treating - nitriding has been race-proven around the world and documented to deliver superior results.

  • Stage 1: Pre-nitrided, unfinished camshaft
  • Stage 2: Nitrided camshaft surface approximately .008"-.010" deep; black oxide finish

Chevelle, Camaro, Corvette, Stingray, Silverado, C10, Firebird, Chevrolet, Big Block, Chevy, BBC, 454, 427, 502, 396, Caprice, Malibu, Impala, Nova, Monte Carlo, S10, 572


Street/strip, 2800+ stall, rough idle, 9.5:1+ compression. Nitrided.

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

Part TypeCamshaft
BrandCOMP CAMS
Package Height2.75
Package Width3.0
Package Length24.5
Weight10.3 PG
Part CategoryPerformance Parts
UsageStreet/Strip
Intake Valve Lift0.574 in (14.58 mm)
Int. Duration Advertised (Deg)294
Exh. Duration @ .050 In. (Deg)246
Rpm Range2300-6500
Lifter TypeHydraulic Flat Tappet
Exh. Duration Advertised (Deg)296
Engine Make/SizeChevy Big Block (396-454)
Int. Duration @ .050 In. (Deg)240
Exhaust Valve Lift0.578 in (14.681 mm)
Vendor Part Number11-250-20
Package Qty1
Package TypeEA
No Questions
No Reviews
Some parts are not legal for use in California or other states with similar laws / regulations
p65 warning
Your Cart

Your shopping cart is empty!