New GMM CNC Ported LS3 Head Complete "Outright"

1 Complete Ls3 GMM CNC  Head - (Limited Stocks)

What you get

• CNC ported intake and exhaust port
• 16 valve springs sutable for 0.550 lift
• 16 valve stem seals
• 16 retainers
• 16 valve locks
• 8 light weight LS3 valves
• 4 intake valve seats turned on Newen cnc cutter Multiple angle variable shape
• 4 Exhaust valve seats turned on Newen cnc cutter Multiple angle variable shape
• Optional increased compression ratio with deck face machined. 
• Fully assembled ready to install

If you are looking for that extra edge or, more precisely, added power, then CNC technology will give you the results you need.

In fact, the cylinder head is one of the most, if not the most, important facets of engine horsepower.

GMM Racing Heads have been supplying cylinder heads to major race teams 

They have led the industry by providing superior performance cylinder heads to a broad cross-section of the racing world.

Upgrade Options

Decking: Please choose how much you want decked of the head (if you are not sure please contact us first)

PSi Valve Springs: Please advise if you would like valve springs added to your order