Swapping engines in Chevy vehicles is a common practice among performance enthusiasts and restorers looking for better power, reliability, or fuel efficiency.
Below is a detailed Chevy engine swap compatibility chart showing which Chevy engines can be interchanged across different vehicle models and generations.
This guide helps you identify direct-fit swaps and those requiring modification to mounts, wiring, or ECU systems.
Chevy Engine Swap Compatibility Chart
| Engine Type | Engine Code / Generation | Displacement | Years | Compatible Chevy Models | Transmission Compatibility | Mounting Fitment | Electronics / ECU Requirements |
|---|---|---|---|---|---|---|---|
| Small Block V8 (Gen I) | 265, 283, 327, 350, 400 | 265–400 ci | 1955–2002 | Camaro, Nova, Chevelle, C10, K10, Impala, Corvette, Bel Air | TH350, TH400, 700R4, Muncie 4-speed, Powerglide | Direct fit pre-1980 RWD; uses traditional SBC mounts | Carbureted setup, no ECU |
| Small Block V8 (Gen II) | LT1 | 5.7L (350 ci) | 1992–1997 | Camaro Z28, Corvette C4, Caprice, Impala SS | 4L60E, T56 manual | Direct fit with LT-specific mounts | Requires ECM, OptiSpark ignition |
| LS Series (Gen III) | LS1 | 5.7L (346 ci) | 1997–2004 | Corvette C5, Camaro SS, Pontiac GTO (swappable) | 4L60E, T56 | Fits most RWD with LS mounts | Standalone ECU + harness |
| LS Series (Gen III) | LS6 | 5.7L (346 ci) | 2001–2005 | Corvette Z06, CTS-V | T56 manual | Fits LS1 mounts | Uses LS1-style ECU |
| LS Series (Gen IV) | LS2 | 6.0L (364 ci) | 2005–2007 | Corvette C6, GTO, Trailblazer SS | 4L65E, T56, 6L80 | Fits LS-ready vehicles | Requires DBW throttle, ECU |
| LS Series (Gen IV) | LS3 | 6.2L (376 ci) | 2008–2017 | Camaro SS, Corvette C6, CTS-V | 6L80E, TR6060 | Direct fit LS platforms | Modern ECU + CAN bus wiring |
| LS Series (Gen IV) | LS7 | 7.0L (427 ci) | 2006–2015 | Corvette Z06, Camaro Z/28 | TR6060 | Custom oil pan required | ECU tuning needed |
| LS Series (Gen IV) | LS9 / LSA (Supercharged) | 6.2L SC (376 ci) | 2009–2015 | Corvette ZR1, CTS-V, Camaro ZL1 | 6L90, TR6060 | Reinforced mounts | ECU tuning + cooling upgrade |
| LS Series (Transverse FWD) | LS4 | 5.3L (325 ci) | 2005–2009 | Impala SS, Monte Carlo SS, Grand Prix GXP | 4T65E-HD (FWD only) | FWD layout only | ECU for drive-by-wire |
| LT Series (Gen V) | LT1 | 6.2L (376 ci) | 2014–2019 | Corvette C7, Camaro SS (6th Gen) | 8L90, TR6060 | Fits Gen V chassis | Direct Injection ECU |
| LT Series (Gen V) | LT2 | 6.2L (376 ci) | 2020–present | Corvette C8 | 8DCT (DCT only) | Mid-engine only | Advanced ECU integration |
| LT Series (Gen V) | LT4 (Supercharged) | 6.2L SC (376 ci) | 2015–present | Corvette Z06, Camaro ZL1, CTS-V | 10L90, TR6060 | Fits modern platforms | ECU, CAN integration |
| LT Series (Gen V) | LT5 (Supercharged) | 6.2L SC (376 ci) | 2019–2020 | Corvette ZR1 | 8L90 | Custom mounts | Advanced DI ECU |
| Vortec / LS Truck (Gen III) | LM7 / LR4 | 4.8L–5.3L | 1999–2007 | Silverado 1500, Tahoe, Suburban, Express Van | 4L60E, 4L80E | Fits most RWD with LS mounts | Requires ECU harness |
| Vortec / LS Truck (Gen III/IV) | LQ4 / LQ9 | 6.0L (364 ci) | 1999–2007 | Silverado HD, Suburban, Express Van | 4L80E, T56 | LS mounts | Requires standalone harness |
| Vortec / LS Truck (Gen IV) | L92 / L94 / L76 | 6.2L (376 ci) | 2007–2014 | Escalade, Yukon Denali, Silverado | 6L80E | LS platform | ECU + VVT control |
| Vortec / EcoTec3 (Gen V) | L83 | 5.3L DI | 2014–2021 | Silverado, Tahoe, Suburban | 6L80E, 8L90 | Fits 2014+ chassis | Direct Injection ECU |
| Vortec V6 (90°) | LU3 / LB4 | 4.3L (262 ci) | 1985–2014 | S10, Astro Van, Blazer, Silverado | 4L60E, 700R4, TH350 | Fits small-block mounts | Minimal ECU mods |
| Inline-6 (Older) | 235, 250, 292 | 235–292 ci | 1950–1988 | Bel Air, C10, Nova, Suburban | TH350, SM465, Powerglide | Direct fit older frames | Carbureted, no ECU |
| Atlas Inline-6 | LL8 | 4.2L (254 ci) | 2002–2009 | Trailblazer, Envoy, Colorado | 4L60E | Swaps into mid-size trucks/SUVs | ECU required |
| EcoTec I4 | LE5, LAF, LCV | 2.0L–2.5L | 2006–present | Cobalt, HHR, Malibu, Equinox, Colorado | F23, 4L60E, 6T40 | Fits small chassis | ECU + immobilizer bypass |
| High Feature V6 | LY7, LLT, LFX | 3.6L | 2004–present | Camaro (5th Gen), Traverse, Malibu, CTS | 6L50, 6T70 | Custom mounts | ECU reprogramming required |
| Turbo I4 | L3B | 2.7L | 2019–present | Silverado 1500 | 8L90 | RWD mounts | Direct Injection ECU |
| Duramax Diesel | LB7, LLY, LBZ, LMM, LML, L5P | 6.6L | 2001–present | Silverado HD, Sierra HD | Allison 1000, 10L1000 | Heavy-duty mounts | Full ECU + harness + DEF |
| Turbo Diesel I6 | LM2 | 3.0L | 2020–present | Silverado 1500, Tahoe, Suburban | 10L80 | Custom diesel mounts | Diesel ECU & DEF system |
| Big Block V8 | 396, 427, 454, 502, 366 | 366–502 ci | 1965–2001 | Chevelle SS, Impala SS, C10, Corvette, Medium-duty trucks | TH400, Muncie 4-speed | Wider mounts; tall deck on 366/8.1L | Carbureted, no ECU |
| LSX Crate Series | LSX376, LSX454R | 376–454 ci | Current | Custom builds, race | Any LS-compatible | LS mounts | Standalone ECU mandatory |
| ZZ Crate Series | ZZ4, ZZ6, ZZ430 | 350–430 ci | Current | Universal retrofit | Any SBC-compatible | Direct SBC mounts | EFI or carburetor compatible |
| E-Rod LS Crate | LS3 E-Rod, LT1 E-Rod | 5.3L–6.2L | Current | Restomod builds | Any LS-compatible | Direct LS mounts | CARB-legal ECU package |
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Understanding Chevy Engine Swap Generations
- Gen I (1955–2002 Small Blocks) – Traditional pushrod engines, simple to work on, and easiest for classic swaps.
- Gen II (LT1 1992–1997) – Early electronic ignition (OptiSpark) and advanced heads but limited aftermarket support.
- Gen III & IV (LS Series 1997–2015) – Aluminum or iron blocks, lightweight, highly tunable; most popular swap engines.
- Gen V (LT Series 2014–present) – Direct injection, advanced electronics, and immense power but complex integration.
Related Chevy 350 Engine Oil Capacity(For All Variations)
Key Considerations When Swapping Chevy Engines
- Mounting Compatibility: Use swap kits for LS and LT engines to ensure proper fitment.
- Transmission Matching: Ensure bolt pattern compatibility; LS and Gen V use specific bellhousing patterns.
- Electronics: Modern engines (LS/LT) require standalone ECUs or complete wiring harness swaps.
- Cooling & Fuel Systems: Upgraded radiators, electric fans, and EFI fuel systems may be needed.
- Drivetrain Strength: High-output engines may require upgraded axles and differentials.
Popular Chevy Engine Swaps
| Base Vehicle | Common Swap Engine | Reason for Swap |
|---|---|---|
| Chevy C10 (1960s–80s) | LS3 or 5.3L LM7 | Improved power and reliability |
| Chevy Camaro (1970s–2000s) | LS1 or LS3 | Lightweight, tunable platform |
| Chevy Nova | 350 Small Block | Classic performance upgrade |
| Chevy Silverado | 6.0L LQ9 or 6.2L L92 | Torque and towing power |
| Chevy S10 | 5.3L LS or 4.8L LS | Compact power boost |
| Chevy Impala SS | LS7 or LT1 | Modern performance conversion |
Related Engine Oil for Chevy Traverse(Recommended by Manufacturer)
Why LS Swaps Are So Popular
- Aftermarket Support: Huge variety of kits, mounts, and harnesses.
- Power Potential: Stock LS engines often exceed 400+ HP with minor upgrades.
- Affordability: Junkyard LS engines are widely available and affordable.
- Reliability: Proven design with strong internal components.
Final words
The Chevy engine swap compatibility chart simplifies the process of choosing the right engine for your build. Whether you’re upgrading a classic C10, restoring a Camaro, or building a track-ready Corvette, understanding which engines fit and what modifications are needed ensures a smoother and more cost-effective project.
Always confirm transmission patterns, mount points, and ECU compatibility before beginning your swap.
