Speed Engineering's LT billet valve covers fit Gen V LT1, LT2, and LT4 engines and are made in the USA. They were first developed to clear a Magnuson 2650 prototype supercharger and were put into production after the one-off set proved out. Each cover has a 12AN breather port, and the set includes a billet oil fill cap. The covers use the factory O-ring gaskets, work with factory coils and Speed Engineering plug wires, and add rocker arm clearance over stock.
⚠️ Important Notes:
- Compatible with standard GM coils "D51OC" (12570616) and "D514A" (12573190). Other coils may work but have not been tested
- Universal design: AN lines and fittings will be needed depending on the application and the use of aftermarket catch cans
Features:
- Made in the USA
- 12AN Breather Port on Each Cover
- Billet Oil Fill Cap: Included
- Uses Factory O-Ring Gaskets
- Increased Rocker Arm Clearance
- Factory Coil Compatible: Also works with Speed Engineering plug wires
- Fits Gen V LT1, LT2 and LT4 Engines
FAQ
Which engines do these valve covers fit?
These valve covers fit Gen V LT1, LT2, and LT4 engines.
Can I reuse my factory ignition coils?
Yes. They work with standard GM coils "D51OC" (12570616) and "D514A" (12573190). Other coils may work but have not been tested.
Do these valve covers need new gaskets?
No special gaskets are needed. The covers use the factory O-ring gaskets.
Are AN fittings included?
No. Each cover has a 12AN breather port, but AN lines and fittings are needed depending on the application and whether aftermarket catch cans are used.
Where are these valve covers made?
They are made in the USA.
