Crow Cams / Genuine GM LS1-LS3 Nodular Iron Crank
Crow Cams / Genuine GM LS1-LS3 Nodular Iron Crank
LS1-LS3 Nodular Iron Crank 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 | 12736808 |
|---|---|
| Component brand | Genuine GM |
| Product category | Crankshafts |
Technical and supplier information
- Part number 12736808
Application and fitment
Supplier-designated LS1–LS3 standard-stroke crankshaft with a 58-tooth reluctor. Excludes LSA/LS9. Confirm crankshaft material, balance and rear-flange configuration before purchase.
Supplied contents
- Part number 12736808
- 3.622-inch standard stroke
- 58-tooth reluctor installed
- Supplier states the crank is balanced for engines with a 4-inch bore
- Supplier category identifies it as a nodular-iron crankshaft
Only the components expressly listed for this SKU are included. Other related products are separate unless the selected package explicitly includes them.
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 LS3/L98 Crankshaft Flex Plate — Six-bolt LS3/L98 flexplate candidate, subject to exact crankshaft rear-flange and transmission confirmation.
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 Camaro 5Th Gen Lsa
- Chevrolet Corvette C5 Ls1
- Chevrolet Corvette C6 Ls2
- Chevrolet Corvette C6 Ls3
- Chevrolet Corvette C6 Ls9
- Holden Commodore Ve L98
- Holden Commodore Ve Ls2
- Holden Commodore Ve Ls3
- Holden Commodore Vf Vfii Ls3
- Holden Commodore Vf Vfii Ls9
- Holden Commodore Vf Vfii Lsa
- Holden Commodore Vt Vt Ii Ls1
- Holden Commodore Vx Ls1
- Holden Commodore Vy Ls1
- Holden Commodore Vz Ls1
- Holden Commodore Vz Ls2
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.