COMP Cams Camshaft CB XR300HR-10
COMP Cams Camshaft CB XR300HR-10
A$1,247.92
Limited Availability from MFR
Limited stock available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical orders of this part. This item is not held in our own warehouse, and availability and release timing may vary depending on manufacturer stock movements and processing at the time of ordering.
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Description
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.
Product Overview
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.
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. 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 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 |
| Lobe Separation: | 110 |
| 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 |
Application Summary
Chevrolet GEN IV 396-454 Big Block Engines Originally Equipped with Flat Tappet Camshafts
Part Type
Engine Camshaft
Specifications
- Product Attributes - Brand
- COMP Cams
- Product Attributes - Manufacturer's Part Number
- 11-444-8
- Product Attributes - Part Type
- Camshafts
- Product Attributes - Product Line
- COMP Cams Xtreme Energy Retrofit Camshafts
- Product Attributes - UPC
- 036584024897
- Product Attributes - Cam Style
- Hydraulic roller, Retro-fit
- Product Attributes - Camshaft Use
- Street/Strip
- Product Attributes - Basic Operating RPM Range
- 3,200-6,200
- Product Attributes - Intake Duration at 050 inch Lift
- 248
- Product Attributes - Exhaust Duration at 050 inch Lift
- 254
- Product Attributes - Duration at 050 inch Lift
- 248 int./254 exh.
- Product Attributes - Advertised Intake Duration
- 300
- Product Attributes - Advertised Exhaust Duration
- 306
- Product Attributes - Advertised Duration
- 300 int./306 exh.
- Product Attributes - Intake Valve Lift with Factory Rocker Arm Ratio
- 0.560 in.
- Product Attributes - Exhaust Valve Lift with Factory Rocker Arm Ratio
- 0.580 in.
- Product Attributes - Valve Lift with Factory Rocker Arm Ratio
- 0.560 int./0.580 exh.
- Product Attributes - Lobe Separation (degrees)
- 110
- Product Attributes - Remanufactured
- No
- Product Attributes - Computer-Controlled Compatible
- No
- Product Attributes - Grind Number
- CB XR300HR-10
- Product Attributes - Valve Springs Required
- Yes
- Product Attributes - Quantity
- Sold individually.
- Product Attributes - Notes
- Requires thrust button and wear plate.
Reference Information
| Brand Name/s | Comp Cams |
|---|---|
| StreetFX SKU | cca11-444-8 |
| SFX Item ID | 4118449 |
| Supplier Item Code | 4118449 |
| Manufacturer SKU | 11-444-8 |
| Manufacturer UPC | 36584024897 |
| Alternative References | c10, s10, COM11-444-8, XR300HR-10 |
Brochures
Compatibility
Chevrolet GEN IV 396-454 Big Block Engines Originally Equipped with Flat Tappet Camshafts
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