Description
Camshaft - Xtreme Marine - Hydraulic Roller - Lift 0.495 / 0.503 in - Duration 270 / 276 - 112 LSA - 1500 / 5500 RPM - Small Block Chevy - Each
XM 218/224 HRlrSBC
For Retro-Fit (Link Bar) Hydraulic Roller Lifters
Additional Information
Largest for inboard/outboard, good mid-range with excellent response, noticeable idle.
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.
| Additional Application Notes | |
|---|---|
| • In 1987, GM began using hydraulic roller camshafts in Chevrolet Small Block V8's. Before ordering this camshaft, verify that your engine has a flat tappet camshaft. If your engine features a roller camshaft, look at our "08-" camshafts or "07-" camshafts if equipped with an LT1/LT4. | |
| • In 1987, GM began using hydraulic roller camshafts in Chevrolet Small Block V8's. Before ordering this camshaft, verify that your engine has a flat tappet camshaft. If your engine features a roller camshaft, look at our "08-" camshafts or "07-" camshafts if equipped with an LT1/LT4. From 1985-1998 Chevrolet introduced the factory roller Small Block into GM cars and trucks. Verify whether or not your vehicle came with a factory roller camshaft. If your vehicle was equipped with a roller camshaft, look to our camshafts and kits that start with "08-". | |
These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.
Features
Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.
Specifications
Product Details
| Advertised Exhaust Duration: | 276 |
| Advertised Intake Duration: | 270 |
| Amazon ASIN: | B001NEUTIK |
| Assembly Lubricant Included: | No |
| Basic Operating RPM Range: | 1,500-5,500 |
| 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: | CL12-417-8 |
| Camshaft Gear Attachment: | 3-Bolt |
| Camshaft Material: | Austempered Ductile Iron |
| Camshaft Series: | Xtreme Marine |
| Description: | Xtreme Marine 218/224 Hydraulic Roller Cam for Chevrolet Small Block |
| Engine Family: | Chevrolet 262-400 c.i. 8 Cylinder (1958-1998) |
| Exhaust Duration @ .050 in.: | 224 |
| Exhaust Duration at .050 inch Lift: | 224 |
| Exhaust Duration: | 276 |
| Exhaust Valve Lift(in): | 0.503 |
| Exhaust Valve Lift: | 0.503 |
| Grind Number: | XM270HR |
| Intake Duration @ .050 in.: | 218 |
| Intake Duration at .050 Inch Lift: | 218 |
| Intake Duration: | 270 |
| Intake Valve Lift(in): | 0.495 |
| Intake Valve Lift: | 0.495 |
| K-Kit Upgrade: | K12-417-8 |
| Lifter Type: | Hydraulic Roller |
| Lifters Included: | No |
| Part Number: | cca12-417-8 |
| RPM Range: | 1000-7000 |
| SK-Kit Upgrade: | SK12-417-8 |
| Title: | Xtreme Marine 218/224 Hydraulic Roller Cam for Chevrolet Small Block |
| Usage: | Marine |
| 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 | cca12-417-8 |
| SFX Item ID | 4118671 |
| Accounting SKU | cca-12-417-8 |
| Manufacturer SKU | 12-417-8 |
| Manufacturer UPC | 036584038399 |
| Alternative References | 12-417-8, CCA-12-417-8, COM12-417-8 |
Camshaft, Hydraulic Roller Tappet, Advertised Duration 270/276, Lift .495/.503, Chevy, Small Block, Each
COMP Cams Xtreme Marine camshafts take advantage of the newest developments in camshaft engineering. Their aggressive lobe design produces better throttle response and top-end horsepower than other cams with the same duration at .050 in., while delivering increased engine vacuum. These cams are available for everything from pleasure boats to race applications, so you can always enjoy Xtreme performance on the water. From hydraulic and mechanical, to flat and roller tappet, COMP Cams offers camshafts for your watercraft dating as far back as the 1950s.
| Product Attributes | |
|---|---|
| Brand | COMP Cams |
| Manufacturer's Part Number | 12-417-8 |
| Part Type | Camshafts |
| Product Line | COMP Cams Xtreme Marine Camshafts |
| UPC | 036584038399 |
| Cam Style | Hydraulic roller, Retro-fit |
| Camshaft Use | Marine |
| Basic Operating RPM Range | 1,500-5,500 |
| Intake Duration at 050 inch Lift | 218 |
| Exhaust Duration at 050 inch Lift | 224 |
| Duration at 050 inch Lift | 218 int./224 exh. |
| Advertised Intake Duration | 270 |
| Advertised Exhaust Duration | 276 |
| Advertised Duration | 270 int./276 exh. |
| Intake Valve Lift with Factory Rocker Arm Ratio | 0.495 in. |
| Exhaust Valve Lift with Factory Rocker Arm Ratio | 0.503 in. |
| Valve Lift with Factory Rocker Arm Ratio | 0.495 int./0.503 exh. |
| Remanufactured | No |
| Computer-Controlled Compatible | No |
| Grind Number | CS XM 270HR-12 |
| Valve Springs Required | Yes |
| Quantity | Sold individually. |
| Notes | Retro-fit: Designed for early non-roller blocks. Requires thrust button and wear plate. |
Compatibility
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