ENGINE · 2015-present
LT4 tuning
LT4 — GM 6.2L supercharged Gen V V8. V8 supercharged direct injection, 6.2 L, 650 HP stock. Cars: Chevrolet Corvette Z06 C7, Camaro ZL1 6th gen, Cadillac CTS-V 3rd gen.
Engine specs
| Engine code | LT4 |
|---|---|
| Configuration | V8 supercharged direct injection |
| Displacement | 6.2 L |
| Production years | 2015-present |
| Stock power | 650 HP |
| ECU family | GM E92 → |
Tuning stages on LT4
| Stage 1 | +50-80 HP (pulley + tune) |
|---|---|
| Stage 2 | +100-130 HP (smaller upper pulley + headers + cat delete) |
| Stage 3 | +200+ HP (bigger SC + ported heads + E85) |
Conservative real-world estimates. Actual results depend on hardware health, fuel quality, ambient temperature, and the specific calibration written.
Services available on LT4
Common DTC codes on LT4
Brands running LT4
Workshop workflow
- Read the LT4 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 E92 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 TPROT + multi-block CRC32 is recomputed automatically.
- Flash via your existing flasher. Adaptation reset via OEM scan tool if required.