Genuine GM LS9 Camshaft – Single Bolt – GM 12638427
Upgrade or replace your factory camshaft with this Genuine GM LS9 hydraulic roller camshaft. Manufactured by General Motors, this OEM camshaft is designed for LS9 applications and is also a popular performance upgrade for a wide range of LS-based engines.
Featuring an aggressive factory performance profile, the LS9 camshaft delivers excellent high-RPM capability while maintaining OEM reliability and fitment.
Features
- Genuine GM OEM camshaft
- Single bolt design
- Hydraulic roller camshaft
- Suitable for LS9 and compatible LS engine builds
- Ideal for performance upgrades or factory replacement
- GM Part Number: 12638427
Camshaft Specifications
| Specification | Value |
|---|---|
| GM Part Number | 12638427 |
| Camshaft Type | Hydraulic Roller |
| Camshaft Drive | Single Bolt |
| Computer Compatible | Yes |
| Recommended Maximum RPM | 6,500 RPM |
| Intake Duration @ 0.050" | 211° |
| Exhaust Duration @ 0.050" | 230° |
| Advertised Intake Duration | 211° |
| Advertised Exhaust Duration | 230° |
| Intake Lobe Lift | 0.331" |
| Exhaust Lobe Lift | 0.328" |
| Valve Lift (Factory Rockers) | 0.562" (14.27 mm) Intake / 0.562" (14.27 mm) Exhaust |
| Lobe Separation Angle (LSA) | 122.5° |
Package Includes
- 1 × Genuine GM LS9 Camshaft (GM 12638427)
Note: Please confirm compatibility with your engine before purchasing. Professional installation and ECU tuning may be required depending on your application and modifications.
Genuine GM LS9 Camshaft – Single Bolt – GM 12638427
$400.00Price
