Holley's cast aluminum LS valve cover adapter plates bring vintage SBC perimeter-bolt valve cover styling to a modern GM LS engine. Featuring an integrated oil fill and pre-threaded PCV ventilation ports, they install directly onto LS1, LS2, LS3, LS6, or LS7 engines to serve as the true valve cover — mount the coil packs on top and use a perimeter-bolt SBC cover of choice to hide the coils, with no coil relocation required.
Specifications:
- Application: SBC to LS Engines
- Bolt Pattern: Center Bolt
- Construction: Die Cast Aluminum
- Finish: Natural
- Coil Mounting Studs: Yes
- Hardware Included: Yes
- Internal Height: 1.208"
- Overall Height: 1.385"
- Oil Fill: No
- Product Type: Valve Cover Adapter Plates
- Quantity: Pair
- Part Number: 241-298
Natural finish parts come straight from the die-cast tooling and are intended to be brush finished, polished, or painted prior to use; expect some visual inconsistencies and tooling marks.
FAQ
What engines do these adapter plates fit?
GM LS1, LS2, LS3, LS6, and LS7 engines.
Do these replace the factory LS valve cover?
Yes — the adapter plate installs onto the LS engine as the true valve cover, with coil packs mounted on top and a perimeter-bolt SBC valve cover used to conceal them.
Is the natural finish ready to install as-is?
It comes straight from the die-cast tooling with some visual inconsistencies and tooling marks — intended for brush finishing, polishing, or painting.
Is mounting hardware included?
Yes, hardware for mounting three different generations of coil packs is included.
