Crow Cams / Genuine GM AFM Lifter
Crow Cams / Genuine GM AFM Lifter
AFM Lifter is a supplier-listed engine or valvetrain component supplied through Crow Cams. It must be selected by exact part number and engine configuration rather than by vehicle name alone.
Product specifications
| Supplier part number | 12740071 |
|---|---|
| Component brand | Genuine GM |
| Product category | Valvetrain |
Technical and supplier information
- 8 required per engine in conjunction with 8 LS7 Lifters. This can be purchased as a kit with guides to suit - L76 LIFTERKIT NOTE: This part has been superseded from 12680871 and 12698946 NOTE: Customers must check lifter pre-load on assembly and measure the required length before purchasing push rods.
Application and fitment
L76, L77, LS7 Supplier part number: 12740071
Supplied contents
The part or quantity described by this SKU is supplied. Related components, installation hardware and ancillary parts are separate unless explicitly stated.
Installation and configuration
- Confirm engine and cylinder-head compatibility, supplied quantity and the correct hydraulic or mechanical valvetrain type.
- Check lifter preload or mechanical lash, geometry, oil supply and all spring/rocker clearances. Do not apply pushrod-engine instructions to a DOHC hydraulic lash adjuster.
Associated products and selection
BBT can confirm the exact engine-specific supporting components and provide a complete parts recommendation before ordering.
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 Corvette C6 Ls7
- Holden Commodore Ve L76
- Holden Commodore Ve L77
- Holden Commodore Ve Ls7
- Holden Commodore Vf Vfii L77
- Holden Commodore Vz L76
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.