Order Status & Returns
Gift Cards
Help Center
1-800-345-4545
Vehicle Info NeededCOMP CAMSPART NUMBER: 249-11-443-8
Comp Cams Xtreme Energy Hydraulic Roller Camshafts
$57795
Ships on 09/08/2026
Lowest Price GuaranteeChevrolet Big Block 396-454 c.i. 8 CYL. 1965-1996
- Xtreme Energy Retro-Fit XR294 Hydraulic Roller Camshaft
Lift: .540"/.560"
Duration: 294/300
Lobe Separation Angle: 110°
RPM Range: 2800-6100
Hydraulic Roller-Street / Strip applications, 10:1 compression, 3000+ stall, intake, headers, gears.
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 applications, 10:1+ compression, 3000+ stall, intake, headers, gears.
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 Height2.8
Package Width3.0
Package Length24.3
Weight10.95 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)248
Cam StyleHydraulic roller tappet
Grind NumberCB XR294HR-10
Exh. Duration Advertised (Deg)300
Engine Make/SizeChevy Big Block (396-454)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.54
Int. Duration @ .050 In. (Deg)242
Basic Operating Rpm Range2,800-6,100
Intake Valve Lift0.54 in (13.716 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)294
Lobe Separation (Deg)110
Rpm Range2800-6100
Advertised Duration294 int./300 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.56
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.540 int./0.560 exh.
QuantitySold individually
Exhaust Valve Lift0.56 in (14.224 mm)
Advertised Intake Duration294
Intake Duration At 050 Inch Lift242
Exhaust Duration At 050 Inch Lift248
Advertised Exhaust Duration300
Lifter TypeHydraulic Roller
Part FitmentSemi Universal
Duration At 050 Inch Lift242 int./248 exh.
Valve Springs RequiredYes
Vendor Part Number11-443-8
Package Qty1
Package TypeEA
No Questions
No Reviews
Items You Need
![Engine Assembly Lube [4 oz. Bottle]](https://www.jegs.com/images/mini_200/500/555/555-28000.jpg)
![Break-In/Engine Oil Supplement [12 oz. Bottle]](https://www.jegs.com/images/mini_200/500/555/555-28060.jpg)
![Valve Spring Compressor [Stud Mount]](https://www.jegs.com/images/mini_200/500/555/555-80518.jpg)
![Valve Spring Compressor [Stud Mount]](https://www.jegs.com/images/mini_200/500/555/555-80521.jpg)
JEGS
Universal Camshaft Installation/Removal Tool Includes 4 camshaft adapters
Part Number : 555-80599
$4779$51.99
You Save$4.20
![Precision Cam Degree Wheel Kit [11 in.]](https://www.jegs.com/images/mini_200/500/555/555-81621.jpg)
COMP CAMS
Composite Distributor Gear Small and Big Block Chevy .491" Shaft Diameter With Beveled Tooth
Part Number : 249-12200
$15995
COMP CAMS
Magnum Roller Rocker Arms Chevy Big Block 396-454/Ford Boss 302, 351C-400M, 429-460
Part Number : 249-1411-16
$23895
COMP CAMS
Short Travel Race Hydraulic Roller Lifters Big Block Chevy 396-454 1965-96
Part Number : 249-15854-16
$78195
![159 Engine Break-In Oil Additive [12-Ounce]](https://www.jegs.com/images/mini_200/200/249/249-159.jpg)
COMP CAMS
Magnum Double Roller Timing Set 1965-91 Chevy Big Block V8 396-454
Part Number : 249-2110
$11695
COMP CAMS
10° Super Lock Steel Retainers Valve Spring Diameter: 1.500" to 1.550"
Part Number : 249-741-16
$9095
COMP CAMS
High Energy Pushrod Set Chevy 396-454ci w/Retro-Fit Hydraulic Roller Cam
Part Number : 249-7815-16
$6695
Some parts are not legal for use in California or other states with similar laws / regulations
