COMP Cams Camshaft CB XM 298H-12
COMP Cams Camshaft CB XM 298H-12
A$702.23
Last Available from MFR.
LAST ONE AVAILABLE from the manufacturer's distribution centre. Once sold, this item may not be immediately available again. The dispatch timeframe shown is an estimate based on historical orders for this part and is dependent on the manufacturer releasing the final available unit.
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Description
XMar 254/264 HFTBBC
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.
Additional Information
Jet w/ B impeller, 10:1+ compression, river drags, bracket racing.
Application Summary
Chevrolet GEN IV 396-454 Big Block Engines Originally Equipped with Flat Tappet Camshafts
Part Type
Engine Camshaft
Product Overview
*Xtreme Marine Camshafts*
⢠Extremely wide powerband helps get boat on plane while making maximum horsepower
⢠Work against exhaust systems with restrictive back pressure
⢠Power enhancement helps maintain top end speed for long distances
⢠Intended for applications where low idle speeds are 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: | 316 |
| Advertised Intake Duration: | 298 |
| Amazon ASIN: | B000P5B5AO |
| Assembly Lubricant Included: | Yes |
| Basic Operating RPM Range: | 3200-6,800 |
| 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 Flat Tappet |
| Cam and Lifter Kit Upgrade: | CL11-252-4 |
| Camshaft Gear Attachment: | 3-Bolt |
| Camshaft Material: | Cast Iron |
| Camshaft Series: | Xtreme Marine |
| Description: | Xtreme Marine 254/264 Hydraulic Flat Cam for Chevrolet Big Block 396-454 |
| Engine Family: | Chevrolet 396-454 c.i. 8 Cylinder (1967-1996) |
| Exhaust Duration @ .050 in.: | 264 |
| Exhaust Duration at .050 inch Lift: | 264 |
| Exhaust Duration: | 316 |
| Exhaust Valve Lift(in): | 0.578 |
| Exhaust Valve Lift: | 0.578 |
| Grind Number: | XM298H |
| Intake Duration @ .050 in.: | 254 |
| Intake Duration at .050 Inch Lift: | 254 |
| Intake Duration: | 298 |
| Intake Valve Lift(in): | 0.575 |
| Intake Valve Lift: | 0.575 |
| K-Kit Upgrade: | K11-252-4 |
| Lifter Type: | Hydraulic Flat Tappet |
| Lifters Included: | No |
| Part Number: | cca11-252-4 |
| RPM Range: | 3000-9000 |
| SK-Kit Upgrade: | SK11-252-4 |
| Title: | Xtreme Marine 254/264 Hydraulic Flat Cam for Chevrolet Big Block 396-454 |
| 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 | cca11-252-4 |
| SFX Item ID | 4118415 |
| Accounting SKU | cca-11-252-4 |
| Manufacturer SKU | 11-252-4 |
| Manufacturer UPC | 036584038511 |
| Alternative References | 11-252-4, CCA-11-252-4 |
Camshaft, Hydraulic Flat Tappet, Advertised Duration 298/316, Lift .575/.578, Chevy, Big 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 | 11-252-4 |
| Part Type | Camshafts |
| Product Line | COMP Cams Xtreme Marine Camshafts |
| UPC | 036584038511 |
| Cam Style | Hydraulic flat tappet |
| Camshaft Use | Marine |
| Basic Operating RPM Range | 3,200-6,800 |
| Intake Duration at 050 inch Lift | 254 |
| Exhaust Duration at 050 inch Lift | 264 |
| Duration at 050 inch Lift | 254 int./264 exh. |
| Advertised Intake Duration | 298 |
| Advertised Exhaust Duration | 316 |
| Advertised Duration | 298 int./316 exh. |
| Intake Valve Lift with Factory Rocker Arm Ratio | 0.575 in. |
| Exhaust Valve Lift with Factory Rocker Arm Ratio | 0.578 in. |
| Valve Lift with Factory Rocker Arm Ratio | 0.575 int./0.578 exh. |
| Camshaft Gear Attachment | 3-bolt |
| Remanufactured | No |
| Computer-Controlled Compatible | No |
| Grind Number | CB XM 298H-12 |
| Valve Springs Required | Yes |
| Quantity | Sold individually. |
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