Description
1 Pair of Complete GMM CNC Ported LS1 (241 catsing) Heads - "Outright"
What you get
- 550 GM Vave springs
- Refurbished 241 Cylinder Head castings
- CNC ported intake and exhaust ports
- ultra sonic process
- 16 valves ground
- 8 intake valve seats turned on Newen cnc cutter Multiple angle variable shape
- 8 Exhaust valve seats turned on Newen cnc cutter Multiple angle variable shape
- increased compression ratio with deck face machined.
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 = $0.00 no extra charge - ( if you are not sure please contact us first)
PSi Valve Springs: Please advise if you would like valve springs added to your order
Valve Stem Seals: Please advise if you would like valve stem seals added to your order
Can be shipped within 48HRS of payment being received
