**Please allow 2-3 weeks for all orders to ship as some parts do take longer to receive**
L8T Crate Engine 401HP 464 LB.-FT. TQ
Part Number: 19435733
Your Price:
$7,828.80
Suggested Retail: $$9,320.00
California Proposition 65 Warning L8T Long Block Chevrolet Performance LT-Series Crate Engine 19435733
401hp @ 5,200 rpm
464 lb.-ft. @ 4,000 rpm
NOTE: Refer to catalog for the complete horsepower and torque testing procedures.
Heavy-Duty Power from Chevy's HD Trucks
With 401 horsepower and 464 lb.-ft. of torque on tap, the L8T crate engine is the largest-displacement LT-family engine in our lineup, offering plenty of low-rpm torque. Direct injection offers more precise fuel control than port injection, enabling a comparatively high compression ratio of 10.8:1 in the engine, which contributes to its high output.
It’s built with a forged steel crankshaft and other high-strength parts. Additional features such as oil-spray cooling for the pistons and a cast iron, long-skirt cylinder block with six-bolt, cross-bolted main caps contribute to the engine’s strength and durability. Comes with production style exhaust manifolds.
Our L8T crate engine package comes complete from the throttle body to the oil pan, including the PCV tube, evap tube, oil dipstick and oil fill tube and cap. It does not include the controller, harness, oxygen sensors or a Front End Accessory Drive system. See Installation Notes below for recommendations.
Chevrolet Performance L8T Long Block Crate Engine Installation Notes
- Engine is shipped with high-pressure direct-injection fuel pump installed
- Front End Accessory Drive system must be ordered separately and includes hydraulic power steering, with center pulley. Pulley-mounted fan not recommended. See page 107 for options.
- Includes 8-bolt flexplate for automatic transmissions
- 2024+ use with Engine Control kit 19435726 for 6L80-E transmission. Use Engine Control kit 19435606 for 10L90-E transmission. See catalog for details.
- Available in Connect & Cruise with 6L80 and 10L90 transmission options
Mobil 1 is the recommended engine oil for all Chevrolet Performance Engines
Chevrolet Performance Crate Engines include a 24-month or 50,000-mile/80,000-kilometer limited warranty, whichever comes first. See your GM dealer for details.
Chevrolet Performance does not utilize any used or remanufactured parts in this crate engine, except for the starter, alternator and power steering pump
This part is intended for competition use only. See page 2 of catalog for complete details
| TECH SPECS | Part Number: 19435733 |
| Engine Type: | Gen V Small Block V-8 direct injection spark ignition |
| Displacement (cu in): | 400 (6.6L) |
| Bore x Stroke (in): | 4.065 x 3.860 (103.25 mm x 98 mm) |
| Block (P/N 19420904): | Cast iron with 6-bolt nodular main bearing caps |
| Crankshaft (P/N 12708884): | Forged steel |
| Connecting Rods (P/N 12675746): | Forged powder-metal |
| Pistons (P/N 12699527-R, 12699529-L): | Hypereutectic aluminum |
| Camshaft Type (P/N 12672469): | Billet steel hydraulic roller |
| Valve Lift (in): | 0.500 intake / 0.492 exhaust |
| Camshaft Duration (@.050 in): | 193º intake / 199º exhaust |
| Cylinder Heads (P/N 12703610): | Aluminum rectangular port D/I with 59.02cc chambers |
| Valve Size (in): | 2.130 hollow intake / 1.590 inconel exhaust |
| Compression Ratio: | 10.8:1 |
| Rocker Arms (P/N 12619829): | Investment cast roller trunnion |
| Rocker Arm Ratio: | 1.8:1 |
| Intake manifold (P/N 12639087): | Composite |
| Throttle body (P/N 12730580): | 87mm diameter (single-bore) |
| Fuel delivery: | High-pressure direct injection (2,175 psi / 150 bar) |
| Recommended Fuel: | 87 octane |
| Ignition system: | Coil-on-plug |
| Maximum Recommended rpm: | 5,600 |
| Reluctor Wheel: | 58x |
| Balanced: | Internal |