These GM LS6 Series Stage III heads from Patriot Performance are CNC-ported, increase the compression on a stock LS6 short block and are a great match for mild or aggressive cam profiles. Ideal for street and strip, these heads supply a good HP gains, and can handle blown or nitrous applications. Patriot Heads are made to order, and ship directly from the manufacturer, please allow around two weeks for delivery.
- A new GM raw 035 casting is used
- Precision welded combustion chambers
- Heat treated to OEM specs
- 5 axis CNC machined
- Hand detailed and assembled
- 21-4N Stainless Valves
- Bronze Guides
- Patriot Gold .650" Dual Springs
- Titanium Retainers
- 5 Angle Valve Job
- I-2.08"/ E-1.60"
- 225cc Intake Runner Volume
- Available with 64cc (PN - 2015) or 68cc (PN - 2035) chambers (choose below)
- NEW Head Bolts are Included, Head Gaskets are not included you will need to purchase them seperately.
- No core required!
Flow Results - 1020 Superflow Bench (4.125" Bore)
| Lift |
2.08" IN (CFM) |
1.60" EX (CFM) |
| .100" |
78 |
66 |
| .200" |
147 |
124 |
| .300" |
209 |
164 |
| .400" |
255 |
206 |
| .500" |
296 |
229 |
| .550" |
312 |
232 |
| .600" |
322 |
237 |
| 
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