Chevrolet LS3 376/525 V8 Engine -19301360 19432418 19435104

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79.04 (cm)
70.49 (cm)
79.04 (cm)
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Chevrolet Performance’s LS376/525 is one of our most powerful naturally
aspirated 6.2L crate engines. It’s based on the LS3, but adds our aggressive ASA
camshaft to expand the performance range, particularly at high rpm, resulting
in 525 horsepower and 486 lb.-ft. of torque.

The ASA camshaft is a hydraulic roller with .525-inch lift on both sides, along with
226 degrees duration on the intake side and 236 degrees on the exhaust side.
Coupled with a tight 110-degree lobe separation angle, it helps the engine deliver
excellent throttle response and breath exceptionally well at high rpm. And for
durability, we complement the cam with higher-rate valve springs.

You’ll need tuning to make the most of the engine in a late-model GM vehicle.
If you plan to use the LS376/525 in a vintage car, you’ll need the controller kit
P/N 19354332, which includes the throttle pedal to match its electronically
controlled throttle body. Use our Muscle Car Oil Pan Kit P/N 19212593 for installation
in older vehicles



• Assembly does not include any electronics
• Use LS376/525 Engine Controller Kit for engine operation, P/N 19354332
• Includes Camaro F-body wet sump oil pan
• Not intended for marine applications
• Front-End Accessory Drive Kits are available in several configurations
• Does not include exhaust manifolds or flexplate/flywheel



Part Number: 19435104
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 92mm)
Block (P/N 12623967): Cast aluminum with 6-bolt, cross-bolted main caps
Crankshaft (P/N 19431872): Nodular iron
Connecting Rods (P/N 12607475): Powdered metal
Pistons (P/N 19207287): Hypereutectic aluminum
Camshaft Type (P/N 88958770): Hydraulic roller
Valve Lift (in): .525 intake / .525 exhaust
Camshaft Duration (@.050 in): 226° intake / 236° exhaust
Cylinder Heads (P/N 12675871): Aluminum L92-style port; as-cast with 68cc chambers
Valve Size (in): 2.165 intake / 1.590 exhaust
Compression Ratio: 10.7:1
Rocker Arms (P/N 12669995 int): Investment-cast, roller trunnion
Rocker Arms (P/N 12681275 exh): Investment-cast, roller trunnion
Rocker Arm Ratio: 1.7:1
Recommended Fuel: Premium pump
Maximum Recommended rpm: 6,600
Reluctor Wheel: 58x
Balanced: Internal