Cadillac LT4 Supercharge 6.2l Engine

The Cadillac LT4 Supercharge 6.2l Engine is a high‑performance engine originally used in Cadillac CTS‑V (2016–19), Chevrolet Camaro ZL1 (2017–24), Corvette Z06 (2015–19), CT5‑V Blackwing (2022–onwards), and Escalade‑V (2023–onwards) . As a crate engine it’s offered by GM Performance Parts and dealers, typically in either wet‑sump or dry‑sump oiling configurations depending on intended chassis and usage

Specifications and Performance

• Power & torque: Official outputs are 650 hp @ 6,400 rpm and 650 lb‑ft @ 3,600 rpm for most wet‑sump versions. Cadillac CTS‑V and CT5‑V Blackwing variants slightly differ (e.g. ~640 hp / 630 lb‑ft for CTS‑V; up to 668 hp / 659 lb‑ft for CT5‑V Blackwing)

• Supercharger: Eaton R1740 TVS 1.7‑liter spinning up to 20,000 rpm, generating over 9 psi of boost for aggressive, linear power delivery Architecture: Based on GM Gen V small‑block architecture, sharing many components with the LT1 but heavily reinforced for boosted duty

Key Design Features Cadillac LT4 Supercharge 6.2l Engine

• Rotocast A356T6 aluminum heads for heat resistance and strength

• Forged aluminum pistons and powder‑metal connecting rods for durability under high cylinder pressures

• Titanium intake valves and billet steel camshaft

• Dry‑sump oiling on Corvette/dry‑sump versions, wet‑sump in standard crate packages

• Variable Valve Timing (VVT), Direct Injection (DI), and Active Fuel Management (cylinder deactivation) for efficiency and drivability

Reliability & Real‑World Experience

Owners describe the Cadillac LT4 Supercharge 6.2l Engine as “pretty sturdy/bulletproof,” with many units lasting far beyond OEM expectations when maintained properly

However, earlier versions (especially ’17) had known supercharger lid or cooler issues, which were revised in later production. Later models like CT5‑V and Escalade‑V have updated internal components for improved robustness

Pricing & Buying Options

Crate engine pricing varies:

• Wet‑sump version (e.g. part #19431955 / 19417413) is typically around $17,000 (e.g. Hawks Motorsports, BoostDistrict)

• Dry‑sump configuration commands a premium, around $18,500 or more depending on exact part number and supplier

• Used cores from salvage vehicles (e.g. CTS‑V with ~51k miles) have shown up for around $9,000 on eBay, though buyer should verify condition and compatibility

Crate engines from GM Performance include a 24‑month / 50,000‑mile limited warranty when purchased new via authorized resellers .

Installation Notes

• Electronics/controller: Sold separately (e.g. Cadillac LT4 Supercharge 6.2l Engine controller kit part #19331517 or 19433248/49)

• Flywheel/flexplate: Included in most crated packages; 8‑bolt pattern.

• Intended for pre‑1976 street vehicles or off‑road use, not for marine applications.

• For ground‑clearance concerns use an LT1 wet‑sump oil pan on wet‑sump builds

Applications & Compatibility

Designed for use in high‑performance GM models, but crate versions are popular for custom builds, restomods, hot rods, and swaps into other chassis. It requires proper mounting, drivetrain integration, electronics, cooling, fuel delivery, and exhaust systems. Note that Cadillac variants (CTS‑V, CT5‑V, Escalade‑V) may come with slightly different tuning or parts, and the LT4 engine itself has evolved across application years

Comparison vs LT1 and LS-Based Alternatives

• The Cadillac LT4 Supercharge 6.2l Engine is essentially a supercharged, highly reinforced version of the LT1 (naturally aspirated).

• Unlike simply adding a blower to an LT1, the Cadillac LT4 Supercharge 6.2l Engine uses forged internals, upgraded heads, heavier-duty components, and direct injection, designed from factory to withstand forced induction long-term

• In comparison to dry‑sump LS9 or aftermarket turbocharged platforms, the Cadillac LT4 Supercharge 6.2l Engine offers key OEM reliability and compatibility with GM support.

Sale Listings Example

One public listing (eBay, Rancho Cordova) offered a 2016–25 Cadillac CTS‑V / Camaro ZL1 used Cadillac LT4 Supercharge 6.2l Engine with 51k miles for US $8,996.50—far below crate pricing but without warranty and requiring confidence in condition and shipping logistics

Buyer’s Checklist

1. New crate vs used core: warranty vs cost.

2. Choose wet or dry sump based on chassis.

3. Controller kit and electronics not included—needs separate purchase.

4. Confirm whether cooling package and cooler lid are updated if buying older unit.

5. Ensure fuel system supports direct injection and high pressure.

6. Prepare for integration with transmission mount, drivetrain, and accessory drive layout.

Conclusion

The GM Cadillac LT4 Supercharge 6.2l Engine is a high‑end, factory‑built powerhouse delivering 650 hp and 650 lb‑ft, with rugged internals and advanced technologies like DI, VVT, AFM and a high‑speed Eaton TVS supercharger. Retailing in the $17K–$19K range for new wet or dry sump units, it’s a premium but turnkey choice for performance builds. Used cores are cheaper but riskier. Reliability in real‑world use has been highly praised, especially post‑2017 revisions. As a drop‑in for high‑power swaps, restomods, and custom GM builds, it remains a top tier option.