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- Up to 60 HP increase over OE cylinder heads
- 185cc intake runner/ 62cc exhaust runner
- 72cc combustion chambers
- 2.02 intake/1.60 exhaust stainless steel valves
- 5 angle valve seat cut
- Double drilled intake mounting for either standard 12 bolt GM intake or late model 8 bolt Vortec intake
- Accepts both perimeter or center bolt valve covers
- Fits 5.7 & 6.2L small block GM V-8 applications
- Aluminum cylinder heads sold in pairs only
- Custom engraved with Sierra High-Performance logo
- Light weight aluminum suitable for freshwater or closed cooling
applications
Product Specs
The West Advisor
The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. West Marine has compiled one of the Web's most comprehensive collections of technical boating information articles.
