ENGINE · 2008-2017
LS3 tuning
LS3 — GM 6.2L V8 Gen IV LS3. V8 NA pushrod, 6.2 L, 426-436 HP stock. Cars: Chevrolet Corvette C6, Camaro SS, Pontiac G8 GXP, Holden HSV ClubSport / GTS.
Engine specs
| Engine code | LS3 |
|---|---|
| Configuration | V8 NA pushrod |
| Displacement | 6.2 L |
| Production years | 2008-2017 |
| Stock power | 426-436 HP |
| ECU family | GM E38 / E67 → |
Tuning stages on LS3
| Stage 1 | +15-25 HP |
|---|---|
| Stage 2 | +30-50 HP (long-tube headers + cat delete + tune) |
| Stage 3 | +200+ HP (supercharger — Magnuson, Whipple, Edelbrock E-Force) |
Conservative real-world estimates. Actual results depend on hardware health, fuel quality, ambient temperature, and the specific calibration written.
Services available on LS3
Common DTC codes on LS3
Brands running LS3
Workshop workflow
- Read the LS3 ECU via OBD or bench using your existing flasher (KESS3, AutoTuner, MPPS, Trasdata, FRF).
- Open Softechpro V5 and drag the .bin / .ori / .hex / .s19 / .frf onto the workspace. The GM E38 variant is auto-detected.
- Pick the service tab and apply Stage 1 / 2 / 3 / DPF OFF / EGR OFF / AdBlue OFF as required.
- Save patched .bin — the outer CRC is recomputed automatically.
- Flash via your existing flasher. Adaptation reset via OEM scan tool if required.