How much does it cost to LS swap a C10?
Expect about $648–$2,001 in swap-specific parts for a C10 LS swap, before the engine (2WD C10: $647.78; 4WD K10: $2,000.54). Those are separate versions, not parts to add together: you buy the set for your drivetrain. We haven't confirmed a price for the 4WD K10 Holley/Hooker LS swap engine mounts, so budget more.
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The parts on our list for the C10 / K10 Squarebody (2026 retail prices; required unless marked optional):
2WD C10:
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- Speedway Motors 91012808 Deluxe AN6 GM LS Swap Fuel Filter/Regulator, 58 PSI ($74.99)
- ICT Billet 5510-KIT003EM LS Swap Engine Mount Kit, 73-87 GM Truck ($260)
- Chevrolet Performance 19212593 LS Swap Muscle Car Oil Pan (LH8-style), LS1/LS3 ($312.79)
- Bills Hot Rod Co. 200 Series (Mid) LS Accessory Drive Kit (alternator, AC, water pump, PS, brackets) ($1,159.99) (optional)
- DeWitts 32-6239019A LSX Conversion Radiator, 1973-87 C10 ($1,796.99) (optional)
- FiTech 71014 Ultimate LS EFI 750HP system (intake, ECM, harness) ($2,314.79) (optional)
- FiTech C10 LS swap fuel tank with pump and sender ($600) (optional)
- Speedway Motors Gen 3 LS to TH350/700R4/Powerglide Transmission Adapter Kit ($313.99) (optional)
4WD K10:
- Speedway Motors LS Swap Radiator Hose Adapter w/ Steam Port, 1.5–1.25 in ($42.99)
- Aeromotive 18688 Phantom In-Tank Fuel Pump System for EFI swaps ($665.60)
- Speedway Motors 91012808 Deluxe AN6 GM LS Swap Fuel Filter/Regulator, 58 PSI ($74.99)
- Speedway Motors 1999-2003 Vortec V8 Wiring Harness ($612.99)
- Speedway Motors LS Swap Conversion Low Profile Oil Pan, OEM filter location ($324.99)
- Speedway Motors LS1/LS2/LS6/5.3/6.0 to TH350/700R4/4L60 Adapter Flexplate ($247.99)
- Speedway Motors LS Crankshaft TH350/TH400/700R4 Torque Converter Adapter Sleeve ($30.99)
- Holley/Hooker BlackHeart dual-position LS swap engine mounts (front or rear bias) (price not confirmed)
- Holley 20-190 Premium Mid-Mount LS7 Complete Accessory System ($3,799.95) (optional)
- Speedway Motors 1966-90 GM A-Body/B-Body/Truck Aluminum Radiator ($303.99) (optional)
- Holley 550-917 Terminator X Max Early Truck Engine MPFI Kit ($1,698.95) (optional)
- Speedway Motors 2.5 in Dual Exhaust Mandrel Bend Kit ($166.99) (optional)
- Hooker 8502-HKR LS Swap Cast Iron Exhaust Manifold, 2.5 in ($466.95) (optional)
- Flowtech 11575FLT Shorty Headers, GM LS Universal ($311.95) (optional)
How the totals add up (required parts only):
- 2WD C10: Deluxe AN6 GM LS Swap Fuel Filter/Regulator, 58 PSI $74.99 + LS Swap Engine Mount Kit, 73-87 GM Truck $260 + LS Swap Muscle Car Oil Pan, LS1/LS3 $312.79 = $647.78
- 4WD K10: LS Swap Radiator Hose Adapter w/ Steam Port, 1.5–1.25 in $42.99 + Phantom In-Tank Fuel Pump System for EFI swaps $665.60 + Deluxe AN6 GM LS Swap Fuel Filter/Regulator, 58 PSI $74.99 + 1999-2003 Vortec V8 Wiring Harness $612.99 + LS Swap Conversion Low Profile Oil Pan, OEM filter location $324.99 + LS1/LS2/LS6/5.3/6.0 to TH350/700R4/4L60 Adapter Flexplate $247.99 + LS Crankshaft TH350/TH400/700R4 Torque Converter Adapter Sleeve $30.99 = $2,000.54 (plus the Holley/Hooker LS swap engine mounts: price not confirmed)
On top of this you'll need the engine (junkyard or crate) and, unless a kit above includes them, the transmission, wiring/ECU and tune, fuel system, cooling and exhaust. The whole-build budget is on the C10 / K10 Squarebody swap guide; price your own combination in the swap cost estimator and see how much an LS swap costs for typical ranges of each item.