Crow Cams / Genuine GM LS3/L98 Crankshaft Flex Plate
Crow Cams / Genuine GM LS3/L98 Crankshaft Flex Plate
LS3/L98 Crankshaft Flex Plate is supplied through Crow Cams for a correctly engineered engine and driveline combination. The crankshaft flange, trigger, rotating assembly and transmission interface must be matched before installation.
Product specifications
| Supplier part number | 12654640 |
|---|---|
| Component brand | Genuine GM |
| Product category | Crankshafts |
Technical and supplier information
- Crow Cams supplies standard replacement and performance camshafts and valve train components to car companies, racers and performance enthusiasts.
- Genuine GM LS3/L98 Crankshaft flex plate Suit 6 bolt crankshaft For flex plate bolts in LS1 to LS3 see 11569956-6
Application and fitment
LS3/L98-compatible six-bolt crankshaft flange and matching transmission/flexplate arrangement. Not a direct replacement for an eight-bolt crankshaft flexplate.
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 crankshaft journals, stroke, reluctor tooth count, snout, rear flange and engine/transmission interface.
- Measure all bearing and rotating-assembly clearances and confirm balance, fasteners and the matching timing drive. Follow the manufacturer installation specifications.
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.
- Optional: Crow Cams / Genuine GM LS1-LS3 Nodular Iron Crank — Matching crankshaft family candidate; confirm the rear flange, flexplate offset, transmission and engine configuration.
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 C5 Ls1
- Chevrolet Corvette C6 Ls3
- Holden Commodore Ve L98
- Holden Commodore Ve Ls3
- Holden Commodore Vf Vfii Ls3
- Holden Commodore Vt Vt Ii Ls1
- Holden Commodore Vx Ls1
- Holden Commodore Vy Ls1
- Holden Commodore Vz Ls1
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.