Crow Cams / Genuine GM LSA Forged Crank 58 Tooth
Crow Cams / Genuine GM LSA Forged Crank 58 Tooth
LSA Forged Crank 58 Tooth 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 | 12641691 |
|---|---|
| Component brand | Genuine GM |
| Product category | Crankshafts |
Technical and supplier information
- Eight-bolt rear flange
Application and fitment
LSA forged crankshaft, 3.622-inch stroke, 58-tooth reluctor and eight-bolt rear flange. Confirm timing-drive, transmission and rotating-assembly compatibility.
Supplied contents
- 3.622-inch standard stroke
- 58-tooth reluctor installed
- Eight-bolt rear flange
- Supplier recommends CS8 LSA-SR timing set
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.
- Recommended: Crow Cams / Genuine GM LSA Crankshaft Flex Plate — Matching eight-bolt crankshaft flexplate candidate. Verify transmission and converter interface.
- Recommended: Crow Cams LSA 3 Bolt Single Row Timing Chain Set — LSA-specific timing-drive option; confirm the intended engine conversion.
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.
Freight and order confirmation
This is a large/heavy component that requires freight to be confirmed for the delivery address before final supply. BBT will confirm the exact component identity, availability and freight method before the order proceeds. It is not treated as a standard small-parcel Crow item.