Crow Cams / Genuine GM LS3 Alloy Bare Block
Crow Cams / Genuine GM LS3 Alloy Bare Block
Genuine GM LS3 aluminium bare engine block supplied through Crow Cams for a correctly specified performance or replacement engine build.
Product specifications
| Supplier part number | 12673475 |
|---|---|
| Component brand | Genuine GM |
| Product category | Engine Components |
Technical and supplier information
- The LS3 alloy bare block is the foundation for serious performance achievements that are driving a new generation of street and racing enthusiasts.
- Bare block machined, ready for pistons. Cam bearings fittedMain caps & bolts suppliedNo cross bolts supplied but are available to purchase
- Part number 12673475
- Machined bare block ready for piston selection and assembly
- Camshaft bearings fitted
- Main caps and main cap bolts supplied
- Main cap cross-bolts are not included
Application and fitment
Genuine GM LS3 aluminium bare block for a compatible LS3/L98-based engine build. Cam bearings, main caps and main-cap bolts are supplied; cross-bolts are not included with the bare block.
Supplied contents
- Part number 12673475
- Machined bare block ready for piston selection and assembly
- Camshaft bearings fitted
- Main caps and main cap bolts supplied
- Main cap cross-bolts are not included
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
- This is an unassembled engine-component package or bare block, not a ready-to-run engine. Confirm every included component and the separately required rotating assembly, camshaft, bearings and ancillary parts.
- A qualified engine builder must verify machining, bore and stroke, piston/rod clearances, compression ratio, bearing clearances, fastener specifications, oiling, balance and final assembly.
- Select the correct crankshaft reluctor, cam timing drive, flexplate/flywheel, ECU and transmission interface. Confirm the finished engine configuration before ordering.
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 Forged Con Rod Assembly — Engine-build component. Confirm bore, stroke, rod/piston geometry and exact package contents before purchase.
- Optional: Crow Cams / Genuine GM LS3 Piston with Pin — Engine-build component. Confirm bore, stroke, rod/piston geometry and exact package contents before purchase.
- Optional: Crow Cams Genuine GM LS Cam Retaining Plate Kit — Engine-build component. Confirm bore, stroke, rod/piston geometry and exact package contents before purchase.
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.