COMP Cams Camshaft CS 47S XS274S-10
COMP Cams Camshaft CS 47S XS274S-10
Description
XE47 236/242 SFT SBC
SBC - 1955-57 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.
Additional Information
Very strong mid-range, torque and throttle response. 2200+stall.
Application Summary
Fits Chevrolet GEN 1 Small Blocks including the 262, 265, 267, 283, 302, 305, 307, 327, 350 and 400. Does not fit LT1/LT4, or factory roller Small Blocks built from 1985 and newer. GM gradually added roller camshafts to 305's and 350's from the mid 80's forward. Camaros/Firebirds/Corvettes received the roller cams early, but many trucks and SUV's had flat tappet cams until the mid 90's. Remove the intake or timing cover to confirm whether the block is a factory roller or flat tappet. Does not fit the LS1, LS2, LS3 or any LS-based 4.8, 5.3, 5.7, 6.0 and 6.2. 1955-1957 Chevrolet 265 engines require a groove on the 5th cam journal for oiling. Contact us for more information.
Part Type
Engine Camshaft
Product Overview
Fits Chevrolet GEN 1 Small Blocks including the 262, 265, 267, 283, 302, 305, 307, 327, 350 and 400. Does not fit LT1/LT4, or factory roller Small Blocks built from 1985 and newer. GM gradually added roller camshafts to 305's and 350's from the mid 80's forward. Camaros/Firebirds/Corvettes received the roller cams early, but many trucks and SUV's had flat tappet cams until the mid 90's. Remove the intake or timing cover to confirm whether the block is a factory roller or flat tappet. Does not fit the LS1, LS2, LS3 or any LS-based 4.8, 5.3, 5.7, 6.0 and 6.2. 1955-1957 Chevrolet 265 engines require a groove on the 5th cam journal for oiling. Contact us for more information.
Features
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Specifications
Product Details
| Advertised Exhaust Duration: | 280 |
| Advertised Intake Duration: | 274 |
| Amazon ASIN: | B001G7GU5U |
| Assembly Lubricant Included: | Yes |
| Basic Operating RPM Range: | 2,000-6,400 |
| 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: | Solid Flat Tappet |
| Camshaft Gear Attachment: | 3-Bolt |
| Camshaft Material: | Cast Iron |
| Camshaft Series: | Xtreme Energy 4 and 7 Swap Firing Order |
| Description: | Xtreme Energy 4/7 Swap 236/242 Solid Flat Cam for Chevrolet Small Block |
| Engine Family: | Chevrolet 262-400 c.i. 8 Cylinder (1958-1998) |
| Exhaust Duration @ .050 in.: | 242 |
| Exhaust Duration at .050 inch Lift: | 242 |
| Exhaust Duration: | 280 |
| Exhaust Valve Lift(in): | 0.51 |
| Exhaust Valve Lift: | 0.51 |
| Grind Number: | XE274S |
| Intake Duration @ .050 in.: | 236 |
| Intake Duration at .050 Inch Lift: | 236 |
| Intake Duration: | 274 |
| Intake Valve Lift(in): | 0.501 |
| Intake Valve Lift: | 0.501 |
| Lifter Type: | Solid Flat Tappet |
| Lifters Included: | No |
| Part Number: | cca12-663-47 |
| RPM Range: | 2000-9000 |
| Title: | Xtreme Energy 4/7 Swap 236/242 Solid Flat Cam for Chevrolet Small Block |
| Usage: | Street/Performance |
| Valve Springs Required: | Yes |
Product Downloads
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 | cca12-663-47 |
| SFX Item ID | 4118787 |
| Accounting SKU | cca-12-663-47 |
| Manufacturer SKU | 12-663-47 |
| Manufacturer UPC | 036584096665 |
| Alternative References | 12-663-47, CCA-12-663-47 |
Camshaft, Mechanical Flat Tappet, Advertised Duration 274/280, Lift .501/.510, Chevy, Small Block, Each
Smart engine builders understand the benefits of a 4&7 firing order swap camshaft, which exchanges the 4 and 7 camshaft lobe timing in small and big block Chevy engines. While some builders have realized significant horsepower gains, all of them experience the exceptionally smooth torque curve possible with this new firing order technology. Dyno, Spintron, and track-tested, these camshafts do not require any engine block, ignition, or valvetrain modifications and can be custom-ground to the engine builder's exact specifications. Regardless of the cam specs that you require, these camshafts are engineered to achieve the maximum power possible using advanced lobe designs.
| Product Attributes | |
|---|---|
| Brand | COMP Cams |
| Manufacturer's Part Number | 12-663-47 |
| Part Type | Camshafts |
| Product Line | COMP Cams Xtreme Energy 4&7 Swap Camshafts |
| UPC | 036584096665 |
| Cam Style | Solid flat tappet |
| Camshaft Use | Street/Strip |
| Camshaft Manufacturers Description | Very strong mid-range torque and throttle response. 2200+ stall. |
| Basic Operating RPM Range | 2,000-6,400 |
| Intake Duration at 050 inch Lift | 236 |
| Exhaust Duration at 050 inch Lift | 242 |
| Duration at 050 inch Lift | 236 int./242 exh. |
| Advertised Intake Duration | 274 |
| Advertised Exhaust Duration | 280 |
| Advertised Duration | 274 int./280 exh. |
| Intake Valve Lift with Factory Rocker Arm Ratio | 0.501 in. |
| Exhaust Valve Lift with Factory Rocker Arm Ratio | 0.510 in. |
| Valve Lift with Factory Rocker Arm Ratio | 0.501 int./0.510 exh. |
| Camshaft Gear Attachment | 3-bolt |
| Intake Valve Lash | 0.016 in. |
| Exhaust Valve Lash | 0.016 in. |
| Remanufactured | No |
| Computer-Controlled Compatible | No |
| Grind Number | XE274S |
| Valve Springs Required | Yes |
| Quantity | Sold individually. |
| Notes | Has a 4 and 7 firing order swap. Firing order is 18736542. |
Compatibility
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