The LS9 crate engine
Supercharged ZR1 power
Chevrolet Performance acquired a finite number of LS9s for use as crate engines and when they’re gone, they’re gone!
PART NO. 19260165
638 HP @6500 RPM
604 LB-FT @3800 RPM
Supercharged ZR1 power
The engine is a technological marvel. High-rpm-validated lightweight reciprocating parts, including titanium intake valves, are used, along with high-flow cylinder heads that draw the charge forced on them by a sixth-generation supercharger.
Connect & Cruise Powertrain System
Connect & Cruise Crate Powertrain Systems provide factory-matched engine-and-transmission combinations that include specially calibrated controllers and wire harnesses designed for retrofit installations in older vehicles.
†Must be purchased from a participating U.S. dealer or Chevrolet Performance Authorized Reseller. Mail-in rebate offer not available with other offers. See gmpartsrebates.com for details, applicable rebate amounts, and rebate form. Rebates must be submitted by 1/31/25. Rebates may be submitted over two invoices within 120 days of each other. Allow 6 to 8 weeks for delivery of debit card. Offer valid 1/1/24 - 12/31/24.
††Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance parts that are emissions-related may not meet U.S., Canadian, and state and provincial laws and regulations relating to motor-vehicle emissions. These parts are designed and intended for use in vehicles operated exclusively for competition: in racing or organized competition on courses separate from public roads, streets, or highways. Visit www.chevroletperformance.com/emissions for more details.
Installation Guides
Find everything from vital data about your engine’s capabilities to how to install it into your build.
LS9 Tech Specs
- Part Number: 19260165
- Engine Type: LS-Series Gen-IV Small-Block V-8
- Displacement (cu. in.): 376 (6.2L)
- Bore x Stroke (in.): 4.065 x 3.622 (103.25 x 92 mm)
- Block: Cast-aluminum with six-bolt, cross-bolted main caps
- Crankshaft (P/N 12641693): Forged steel with nine-bolt flange
- Connecting Rods (P/N 12624231): Forged titanium
- Pistons (P/N 19180414): Forged aluminum
- Camshaft Type (P/N 12638427): Hydraulic roller
- Valve Lift (in.): .562 intake / .558 exhaust
- Camshaft Duration (@.050 in.): 211° intake / 230° exhaust
- Cylinder Heads (P/N 12621774): Aluminum L92-style ports; “as cast” with 68-cc chambers
- Valve Size (in.): 2.160 titanium intake / 1.590; hollow, sodium-filled exhaust
- Compression Ratio: 9.1:1
- Rocker Arms (P/N 12569167 int): Investment-cast, roller trunnion
- Rocker Arms (P/N 10214664 exh): Investment-cast, roller trunnion
- Rocker Arm Ratio: 1.7:1
- Recommended Fuel: Premium pump
- Maximum Recommended rpm: 6600
- Reluctor Wheel: 58X
- Balanced: Internal
Mobil 1 is now The Official Motor Oil of Chevrolet Performance.