Description
Camshaft - Xtreme Energy - Hydraulic Roller - Lift 0.560 / 0.580 in - Duration 300 / 306 - 110 LSA - 3200 / 6200 RPM - Big Block Chevy - Each
XE 248/254 HRlrBBC
Featuring a quicker valve opening, the Xtreme Energy camshaft profile provides increased responsiveness and more area under the lift curve than older, slower grinds. Designed to increase performance without sacrificing driveability and creature comforts, the Xtreme Energy grind family offers gains in torque and horsepower while still delivering adequate vacuum for power brakes and other vacuum dependent accessories. Xtreme Energy camshafts work great in carbureted applications, but offer the best performance with aftermarket intake manifolds, lower gear ratios, headers and free flowing exhaust.
Additional Information
Pro Street/bracket racing, 10:1+ compression, 3500+ stall, good intake, headers.
Application Summary
Chevrolet GEN IV 396-454 Big Block Engines Originally Equipped with Flat Tappet Camshafts
Part Type
Engine Camshaft
Features
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Specifications
Product Details
| Advertised Exhaust Duration: | 306 |
| Advertised Intake Duration: | 300 |
| Amazon ASIN: | B000P5B64O |
| Assembly Lubricant Included: | No |
| Basic Operating RPM Range: | 3200-6,200 |
| 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. |
| Cam Type: | Hydraulic Roller |
| Cam and Lifter Kit Upgrade: | CL11-444-8 |
| Camshaft Gear Attachment: | 3-Bolt |
| Camshaft Material: | Austempered Ductile Iron |
| Camshaft Series: | Xtreme Energy |
| Description: | Xtreme Energy 248/254 Hydraulic Roller Cam for Chevrolet Big Block 396-454 |
| Engine Family: | Chevrolet 396-454 c.i. 8 Cylinder (1967-1996) |
| Exhaust Duration @ .050 in.: | 254 |
| Exhaust Duration at .050 inch Lift: | 254 |
| Exhaust Duration: | 306 |
| Exhaust Valve Lift(in): | 0.58 |
| Exhaust Valve Lift: | 0.58 |
| Grind Number: | XR300HR |
| Intake Duration @ .050 in.: | 248 |
| Intake Duration at .050 Inch Lift: | 248 |
| Intake Duration: | 300 |
| Intake Valve Lift(in): | 0.560 |
| Intake Valve Lift: | 0.56 |
| K-Kit Upgrade: | K11-444-8 |
| Lifter Type: | Hydraulic Roller |
| Lifters Included: | No |
| Part Number: | cca11-444-8 |
| RPM Range: | 3000-9000 |
| SK-Kit Upgrade: | SK11-444-8 |
| Title: | Xtreme Energy 248/254 Hydraulic Roller Cam for Chevrolet Big Block 396-454 |
| Usage: | Street/Performance |
| Valve Springs Required: | Yes |
Product Downloads
| # | Document Type | Download |
|---|---|---|
| 1. | Catalog |
|
Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Comp Cams, Comp Cams (edelbrock) |
| StreetFX SKU | cca11-444-8 |
| SFX Item ID | 4118449 |
| Accounting SKU | cca-11-444-8 |
| Manufacturer SKU | 11-444-8 |
| Manufacturer UPC | 036584024897 |
| Alternative References | 11-444-8, CCA-11-444-8, COM11-444-8 |
Camshaft, Hydraulic Roller Tappet, Advertised Duration 300/306, Lift .560/.580, Chevy, Big Block, Each
COMP Cams Xtreme Energy retrofit camshafts are built to take advantage of the latest cam technology—and provide maximum performance. Whether your use is off-roading, towing, or street performance, there is an Xtreme Energy cam available for you. By using an aggressive lobe profile, these hydraulic roller tappet cams provide better throttle response, engine vacuum, and top-end horsepower than equivalent cams from other manufacturers. Choose the model and options designed for your engine application.
| Product Attributes | |
|---|---|
| Brand | COMP Cams |
| Manufacturer's Part Number | 11-444-8 |
| Part Type | Camshafts |
| Product Line | COMP Cams Xtreme Energy Retrofit Camshafts |
| UPC | 036584024897 |
| Cam Style | Hydraulic roller, Retro-fit |
| Camshaft Use | Street/Strip |
| Basic Operating RPM Range | 3,200-6,200 |
| Intake Duration at 050 inch Lift | 248 |
| Exhaust Duration at 050 inch Lift | 254 |
| Duration at 050 inch Lift | 248 int./254 exh. |
| Advertised Intake Duration | 300 |
| Advertised Exhaust Duration | 306 |
| Advertised Duration | 300 int./306 exh. |
| Intake Valve Lift with Factory Rocker Arm Ratio | 0.560 in. |
| Exhaust Valve Lift with Factory Rocker Arm Ratio | 0.580 in. |
| Valve Lift with Factory Rocker Arm Ratio | 0.560 int./0.580 exh. |
| Remanufactured | No |
| Computer-Controlled Compatible | No |
| Grind Number | CB XR300HR-10 |
| Valve Springs Required | Yes |
| Quantity | Sold individually. |
| Notes | Requires thrust button and wear plate. |
Compatibility
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