Description
BBC - 1965-66 396 c.i.d. models have an oiling groove in the rear journal. The listed part numbered cams will not fit these models, so if you require a Camshaft with the oiling groove, please call us at 1-800-999-0853 or contact us, and we will assist you with placing an order.
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: | 306 |
|---|---|
| Advertised Intake Duration: | 294 |
| Amazon ASIN: | B000CESFIS |
| Assembly Lubricant Included: | Yes |
| Basic Operating RPM Range: | 2,800-7000 |
| 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 |
| Cam and Lifter Kit Upgrade: | CL11-254-4 |
| Camshaft Gear Attachment: | 3-Bolt |
| Camshaft Material: | Cast Iron |
| Camshaft Series: | Xtreme Energy |
| Description: | Xtreme Energy 250/256 Hydraulic Flat Cam for Chevrolet Big Block 396-454 |
| Engine Family: | Chevrolet 396-454 c.i. 8 Cylinder (1967-1996) |
| Exhaust Duration @ .050 in.: | 256 |
| Exhaust Duration at .050 inch Lift: | 256 |
| Exhaust Duration: | 306 |
| Exhaust Valve Lift(in): | 0.593 |
| Exhaust Valve Lift: | 0.593 |
| Grind Number: | XE294H |
| Intake Duration @ .050 in.: | 250 |
| Intake Duration at .050 Inch Lift: | 250 |
| Intake Duration: | 294 |
| Intake Valve Lift(in): | 0.588 |
| Intake Valve Lift: | 0.588 |
| K-Kit Upgrade: | K11-254-4 |
| Lifter Type: | Hydraulic Flat Tappet |
| Lifters Included: | No |
| Lobe Separation: | 110 |
| Part Number: | cca11-254-4 |
| RPM Range: | 2000-9000 |
| SK-Kit Upgrade: | SK11-254-4 |
| Title: | Xtreme Energy 250/256 Hydraulic Flat 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
- 11-254-4
- Product Attributes - Part Type
- Camshafts
- Product Attributes - Product Line
- COMP Cams Xtreme Energy Camshafts
- Product Attributes - UPC
- 036584023722
- Product Attributes - Cam Style
- Hydraulic flat tappet
- Product Attributes - Camshaft Use
- Street/Strip
- Product Attributes - Basic Operating RPM Range
- 2,800-7,000
- Product Attributes - Intake Duration at 050 inch Lift
- 250
- Product Attributes - Exhaust Duration at 050 inch Lift
- 256
- Product Attributes - Duration at 050 inch Lift
- 250 int./256 exh.
- Product Attributes - Advertised Intake Duration
- 294
- Product Attributes - Advertised Exhaust Duration
- 306
- Product Attributes - Advertised Duration
- 294 int./306 exh.
- Product Attributes - Intake Valve Lift with Factory Rocker Arm Ratio
- 0.588 in.
- Product Attributes - Exhaust Valve Lift with Factory Rocker Arm Ratio
- 0.593 in.
- Product Attributes - Valve Lift with Factory Rocker Arm Ratio
- 0.588 int./0.593 exh.
- Product Attributes - Lobe Separation (degrees)
- 110
- Product Attributes - Remanufactured
- No
- Product Attributes - Computer-Controlled Compatible
- No
- Product Attributes - Grind Number
- CB XE294H-10
- Product Attributes - Valve Springs Required
- Yes
- Product Attributes - Quantity
- Sold individually.
Reference Information
| Brand Name/s | Comp Cams |
|---|---|
| StreetFX SKU | cca11-254-4 |
| SFX Item ID | 4118419 |
| Supplier Item Code | 4118419 |
| Manufacturer SKU | 11-254-4 |
| Manufacturer UPC | 36584023722 |
| Alternative References | c10, s10, COM11-254-4, XE294H-10 |
Brochures
Compatibility
Chevrolet GEN IV 396-454 Big Block Engines Originally Equipped with Flat Tappet Camshafts
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