Description
Heavy-Duty Power from Chevy’s HD Trucks
With 523 horsepower and 543 lb.-ft. of torque on tap, the L8P crate engine is the largest-displacement LT-family engine in GM’s lineup. It Offers plenty of low-rpm torque. Direct injection offers more precise fuel control than port injection. This enables a comparatively high compression ration of 10:8:1 in the engine, which contributes to its high output. The new hotter-cammed L8P puts out 523 hp at 5,800 rpm and a whopping 543 lb-ft of twist at 4,600 rpm!
TECH SPECS
Part Number: 19435523
Engine Type: Gen V Small Block V-8 directinjection spark ignition.
Displacement (cu in): 400 (6.6L).
Bore x Stroke (in / mm): 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 Hypereutectic aluminum.
Camshaft Type (P/N 12736191): Billet steel hydraulic roller.
Valve Lift (in): 0.549 intake / 0.549 exhaust.
Camshaft Duration (@ 0.050 in): 218º intake / 231º exhaust.
Cylinder Heads (P/N 12736192): Aluminum rectangular port D/I
with 59.02cc chambers.
Valve Size (in): 2.130 hollow intake / 1.590 sodium-filled exhaust.
Compression Ratio: 10.8:1.
Rocker Arms: Investment cast roller trunnion
Rocker Arm Ratio: 1.8:1.
Intake manifold: Composite
Throttle body (P/N 12730580): 87mm diameter (single-bore)
Fuel delivery: High-pressure direct injection
(2,175 psi )
Recommended Fuel: Premium unleaded – 91 (R+M)/2
Ignition system: Coil-on-plug.
Maximum Recommended RPM: 6000 rpm
Reluctor wheel: 58X
Balanced: Internal
Engine controller kits sold separately based on you transmission.
Transmission controls kits are included with the transmission.
- Â Use Engine Control Kit 19435524 with 6L80E Transmission.Â
- Use Engine Controller kit 19540996 with 8L90E/10L90E Transmission.
