LS7 7.0L head porting.
The factory race head, CNC’d past stock. A 7.0 that really breathes.
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″ | 161 | 157 | -4 | — |
| 0.300″ | 241 | 242 | +1 | +0% |
| 0.400″ | 302 | 307 | +5 | +2% |
| 0.500″ | 342 | 357 | +15 | +4% |
| 0.600″ | 371 | 395 | +24 | +6% |
| 0.700″ | 341 | 382 | +41 | +12% |
Peak gain lands at 0.700″ lift: 341 CFM stock to 382 CFM ported. Low lift stays close to stock (-4 CFM at 0.200″), so the LS7 keeps its street manners and makes its money up high. At 0.700″ it moves 382 CFM against 341 stock.
What we do to it.
The factory race head — we CNC it past stock and add a proper valve job for a 7.0 that genuinely breathes up top.
Fitment and pricing.
Cars these heads come off.
- 2006–2013 Corvette Z06
- LS7 swaps
Valve upgrades for this head.
Offered with the port work on this platform, fitted while the heads are apart.
LS7 porting, answered.
What does Carma do to LS7 7.0L heads?
The factory race head — we CNC it past stock and add a proper valve job for a 7.0 that genuinely breathes up top.
What does LS7 7.0L head porting cost?
$1,200 for the pair of LS7 7.0L 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?
2006–2013 Corvette Z06 · LS7 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 LS7 head flow?
Peak measured gain is +41 CFM at 0.700″ lift — 341 CFM stock to 382 CFM ported on our SF-1020 bench.
What should I run with ported heads?
Big cam, race intake, 1⅞–2 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.