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Which LS engines came supercharged?
From the factory, GM's supercharged small-blocks are:
Last updated
| Engine | Family | Years | Power | Compression |
|---|---|---|---|---|
| LSA | Generation IV | 2009–2017 | 556–580 hp | 9.00:1 |
| LS9 | Generation IV | 2009–2013, 2017 | 638 hp | 9.10:1 |
| LT4 | Generation V | 2015–present | 640–682 hp | 10.00:1 |
| LT5 | Generation V | 2019 | 755 hp | 10.00:1 |
The LSA and LS9 are Gen IV LS engines; the LT4 and LT5 are Gen V (LT) engines with direct injection. Their compression ratios are listed above; the naturally aspirated Gen IV/V 6.2s in our table run 10.4–11.5:1.
Every other LS/LT came naturally aspirated. For boosting a junkyard engine, see making power with an LS.
Specs are GM ratings as published; power varied by year and vehicle. Confirm any engine by the RPO code on the glovebox/console sticker.
Swapping a factory supercharged Gen IV
Swapping the LSA: what to plan for
- Computer: the LSA has a 58x crank. An E38 or E67 matches it; a 0411/P59 also needs a 58x-to-24x converter box and its own sensor and knock-sensor wiring. Throttle and wiring have to suit the computer too. More: how to wire your LS (the full checklist for your engine and computer).
- Factory supercharged: the intercooler pump and front heat exchanger come with it, so plan space ahead of the radiator, and plan the fuel system for boost. More: fuel system sizing.
- From a 2012–2015 Camaro ZL1: Corvette accessory spacing (the ZL1 uses it). More: accessory drive spacing.
- From a Cadillac CTS-V: Corvette accessory spacing; the CTS-V has its own oil pan. More: oil pans.
Swapping the LS9: what to plan for
- Computer: the LS9 has a 58x crank. An E38 or E67 matches it; a 0411/P59 also needs a 58x-to-24x converter box and its own sensor and knock-sensor wiring. Throttle and wiring have to suit the computer too. More: how to wire your LS (the full checklist for your engine and computer).
- Dry sump from the factory: plan room for the tank and lines, or a wet-sump conversion (pan, pickup and pump made for it). More: oil pans.
- Factory supercharged: the intercooler pump and front heat exchanger come with it, so plan space ahead of the radiator, and plan the fuel system for boost. More: fuel system sizing.
- From a Corvette (Chevrolet Corvette ZR1): Corvette spacing, the most compact accessory drive. More: accessory drive spacing.