LS2 6.0L head porting.
Cathedral-port 6.0 — same cathedral family and port recipe as our LS1. Documented numbers.
What this head actually flows.
Intake flow at 28″ — stock and ported, both measured on our own SF-1020 flow bench.
| Valve lift | Stock | Carma CNC | Gain | % |
|---|---|---|---|---|
| 0.200″ | 152 | 154 | +2 | +1% |
| 0.300″ | 191 | 221 | +30 | +16% |
| 0.400″ | 245 | 264 | +19 | +8% |
| 0.500″ | 245 | 288 | +43 | +18% |
| 0.600″ | 246 | 303 | +57 | +23% |
Peak gain lands at 0.600″ lift: 246 CFM stock to 303 CFM ported. Low lift stays close to stock (+2 CFM at 0.200″), so the LS2 keeps its street manners and makes its money up high. At 0.600″ it moves 303 CFM against 246 stock.
What we do to it.
Cathedral-port 6.0 — same casting family and CNC recipe as our LS1 port (flow shown), with a fresh multi-angle valve job and new stainless valves — 2.02″ intake / 1.57″ exhaust. Documented sheet with every set.
Fitment and pricing.
Cars these heads come off.
- 2005–2007 Corvette
- GTO
- Trailblazer SS
- G8
- LS swaps
LS2 porting, answered.
What does Carma do to LS2 6.0L heads?
Cathedral-port 6.0 — same casting family and CNC recipe as our LS1 port (flow shown), with a fresh multi-angle valve job and new stainless valves — 2.02″ intake / 1.57″ exhaust. Documented sheet with every set.
What does LS2 6.0L head porting cost?
$1,200 for the pair of LS2 6.0L heads — both of them, CNC ported on our machine here in Nashville, and the set goes back with its own flow sheet.
Which cars does this fit?
2005–2007 Corvette · GTO · Trailblazer SS · G8 · LS swaps. If your combination is not listed, call us and we will tell you straight whether the head is the right move.
How much more does a ported LS2 head flow?
Peak measured gain is +57 CFM at 0.600″ lift — 246 CFM stock to 303 CFM ported on our SF-1020 bench.
What should I run with ported heads?
Cam, intake, long-tube headers. Heads do their best work as part of a combination, not on their own.
Other LS & LT heads we port.
The rest of the combination.
Ship them in or drop them off.
Heads can come to us on a pallet or still on the car. Tell us the combination you are building and we will tell you honestly whether porting is the right next step for it.