Crow Cams Genuine GM LS3 Single-Bolt Standard Replacement Camshaft
LS3 Single-Bolt Standard Replacement Camshaft is a factory-style replacement camshaft for its specified engine and cam-drive configuration. It is intended to retain the appropriate original valvetrain arrangement rather than automatically requiring performance hardware.
Product specifications
| Supplier part number | 12623063 |
|---|---|
| Component brand | Genuine GM |
| Product category | Camshafts |
| Advertised duration | 259° / 265° |
| Duration @ .050 in | 204° / 211° |
| Valve lift | .551 / .518 in |
| Lobe separation | 117° |
| Lifter type | Hydraulic |
| Cam attachment | Single-bolt |
Application and fitment
LS3 engines with a matching single-bolt camshaft drive. Not a direct replacement for a three-bolt application.
Supplied contents
One camshaft for the specified position/profile. Matching camshafts, lifters, springs, retainers and installation hardware are not included unless explicitly stated for this SKU.
Installation and configuration
- Confirm the camshaft part number, engine generation, camshaft drive, trigger arrangement and cylinder-head compatibility before installation.
- Degree the camshaft where required and measure piston-to-valve, valve-to-valve, spring coil-bind and retainer-to-seal clearances on the actual engine.
- Check lifter type, hydraulic preload or mechanical lash, rocker geometry, pushrod length where applicable and the required spring/retainer package.
- An active-AFM/DOD engine requires the correct mechanical conversion before a non-AFM camshaft is fitted; update the ECU calibration as required.
Recommended associated products
Only purchase components required for your actual engine configuration. Included kit components are already accounted for; separately listed alternatives must not be added cumulatively.
- Recommended: Crow Cams Genuine GM LS Cam Retaining Plate Kit — Recommended cam-retaining-plate and fastener kit when the existing plate or fasteners require replacement.
- Recommended: Crow Cams Genuine GM LS Timing Cover Gasket Kit — Recommended front-cover gasket and seal service components during camshaft installation.
- Optional: Crow Cams LS Single Bolt Timing Set — Timing-drive service option only where the actual camshaft bolt pattern, trigger and engine configuration match.
- Optional: Crow Cams Genuine GM LS High-Pressure Oil Pump Kit — Supplier-listed related component. Confirm the exact engine, configuration and installation requirements; purchase separately only if not already included.
Alternative packages — choose one
These are optional alternatives, not additional required purchases. Select the version that matches the intended engine, existing components and complete package contents.
- Recommended: Crow Cams Genuine GM LS3/L98 Lifter Overhaul Kit — Select the overhaul package matching the actual engine and early/late head-bolt arrangement. Use one appropriate overhaul kit, not several.
BBT product selection and workshop support
Built by Boost & Tune is an authorised Crow Cams dealer and performance engine workshop. We can assist with the correct camshaft profile, compatible valve-train hardware, engine preparation, installation and calibration. Provide the exact engine code, intended use and existing components so the complete package can be checked before ordering.
Vehicle Fitment
- Chevrolet Camaro 5Th Gen Ls3
- Chevrolet Corvette C6 Ls3
- Holden Commodore Ve Ls3
- Holden Commodore Vf Vfii Ls3
Confirm chassis, engine, drivetrain and production-year compatibility before ordering.
Built by Boost & Tune Support
BBT can assist with fitment review, installation, supporting modifications, configuration and calibration requirements where applicable.