Howards Cams Steel Billet Mechanical Roller Camshafts 121153-10 Camshaft, Tappet, Advertised Duration 281/287, Lift .663/.680, Chevy, Big Block, Each
Howards Cams Steel Billet Mechanical Roller Camshafts 121153-10 Camshaft, Tappet, Advertised Duration 281/287, Lift .663/.680, Chevy, Big Block, Each
Description
Camshaft - Steel Billet - Mechanical Roller - Lift 0.663 / 0.680 in - Duration 281 / 287 - 110 LSA - 3000 / 7000 RPM - Big Block Chevy - Each
Data: v2 - Desc: v4.2 - Upd: 2026-11-08 02:46:04
Features
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Specifications
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Howards Cams, HOWARDS RACING COMPONENTS |
| StreetFX SKU | hrs121153-10 |
| SFX Item ID | 5097934 |
| Accounting SKU | hrs-121153-10 |
| Manufacturer SKU | 121153-10 |
| Manufacturer UPC | 840793106004 |
| Alternative References | HRC121153-10, HRS-121153-10 |
Camshaft, Mechanical Roller Tappet, Advertised Duration 281/287, Lift .663/.680, Chevy, Big Block, Each
Howards Cams steel billet mechanical roller camshafts are serious cams for serious performance. Cut from billet steel these high-grade, race-quality mechanical roller cams from Howards are ground on precision equipment to ensure awesome performance. Mechanical roller cams offer aggressive power for all-out competition. They're billet, they're Howards, and they're serious-- mechanical roller camshafts!
| Product Attributes | |
|---|---|
| Brand | Howards Cams |
| Manufacturer's Part Number | 121153-10 |
| Part Type | Camshafts |
| Product Line | Howards Cams Steel Billet Mechanical Roller Camshafts |
| UPC | 840793106004 |
| Cam Style | Solid roller, Retro-fit |
| Camshaft Use | Street/Strip |
| Camshaft Manufacturers Description | Good midrange horsepower, rough idle. Needs 11.0:1 compression ratio and up. |
| Basic Operating RPM Range | 3,000-7,000 |
| Intake Duration at 050 inch Lift | 249 |
| Exhaust Duration at 050 inch Lift | 255 |
| Duration at 050 inch Lift | 249 int./255 exh. |
| Advertised Intake Duration | 281 |
| Advertised Exhaust Duration | 287 |
| Advertised Duration | 281 int./287 exh. |
| Intake Valve Lift with Factory Rocker Arm Ratio | 0.663 in. |
| Exhaust Valve Lift with Factory Rocker Arm Ratio | 0.680 in. |
| Valve Lift with Factory Rocker Arm Ratio | 0.663 int./0.680 exh. |
| Camshaft Gear Attachment | 3-bolt |
| Intake Valve Lash | 0.022 in. |
| Exhaust Valve Lash | 0.022 in. |
| Remanufactured | No |
| Computer-Controlled Compatible | No |
| Valve Springs Required | Yes |
| Quantity | Sold individually. |
Compatibility
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