Chevrolet Performance LS3 6.2L 430 HP Complete Crate Engine 19540155

19540155 GM Genuine Chevrolet Performance LS3 • 430 HP • 425 lb-ft • Complete Crate Engine, Replaces 19435098, 19434636, 19370416, 19369326 and 19301326, 19419862, 19432414

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430 hp @ 5,900 rpm and 425 lb-ft @ 4,600 rpm

What's Hot?
· 430 horse
· 376 cubes
· 24-month GMPP warranty

Starting with the '08 Corvette, the world was first introduced to GM's latest small block V8 creation – the 6.2-liter LS3. A continuation of the industry leading V8 engines from GM Powertrain, the LS3 kicks out 430 horsepower and 424 lb.-ft. of torque. (In the Corvette, those numbers go to 436 hp and 428 lb.-ft. of torque with the optional dual mode exhaust system.)
It's a brute of a small block with 376 ready cubes at your beckon call.
The LS series of engines from GM Powertrain have broken new ground for efficiency and performance from a pushrod platform engine. The LS3 continues the engineering breakthroughs with revised cylinder heads featuring rectangle ports borrowed from the vaunted LS7. The heads feature 63 cc combustion chambers, 2.16-inch intake valves, and 1.59-inch exhaust valves.
The camshaft features an aggressive .551-inches of lift on the intake side with less overlap (than the LS2) for even greater airflow and power. Rocker arms with a 1.7:1 ratio sit on top of the heads.

In the bottom end, the aluminum 6-bolts/main block features 4.06-inch bores and 3.62-inch stroke. A nodular iron crankshaft, powdered metal rods, and aluminum pistons (10.7:1 compression ratio) round out a rev-happy short block. Red line for the LS3 comes at 6600 rpm, and you will get there very quickly.
With a high-tech GM foundation, aluminum block, and high flowing rectangular-port heads, the LS3 is the new standard in the small block world. The LS3 helps power the new Corvette to a top speed of 190 mph. What will it power you to?

Get the legendary Chevrolet Performance LS3 in a complete crate-engine package. The 19540155 delivers 430 horsepower at 5,900 RPM and 425 lb-ft of torque at 4,600 RPM, with aluminum construction, LS3/L92-style rectangular-port cylinder heads, hydraulic roller camshaft and 58X reluctor technology.

What's Included

• Complete Chevrolet Performance LS3 6.2L engine 19540155
• Intake manifold
• Fuel injectors
• Throttle body
• Water pump
• Harmonic balancer
• Ignition system
• 58X reluctor
• Aluminum LS3/L92 cylinder heads
• Hydraulic roller camshaft
• Chevrolet Performance warranty

LS3 6.2L 19540155 Tech Specs:

UPC: 197224832064

Frequently Asked Questions:

• How much horsepower does the LS3/430 make? 430hp @ 5,900 rpm
• What is the displacement of the LS3? 6.2 L or 376 CI
• Is the LS3/430 a complete engine? Yes, it comes with an intake manifold, Coil packs, Ing wires, Water Pump
• Does the LS3 include a throttle body? Yes, it comes with a 90.00mm, Cast Aluminum Throttle Body 
• Does the LS3 include a water pump? Yes, it comes with an aluminum PN 19180610
• What ECU do I need for the LS3/430? We suggest the GM 19540147 Harness and ECU Kit
• What transmission can I use with the LS3? You have the option of using the 4L65E, 4L70E, 6L80E and Super Magnum Manual 6-speed
• Will this LS3 work in my Camaro, Chevelle, C10, Corvette? Yes, call us for details
• What is the warranty? The Chevrolet Performance LS3 comes with a 2-year, 50,000-mile warranty. Call us for details
• What is the difference between the 19540155 and 19540156? The 19540155 is 430 HP, the 19540156 is 495 HP.
• What is the difference between the 19540155 and the LS3 long block? The 19540155 also comes with a intake manifold, coil packs, water pump and much more.
  
  
  

Link to information sheet

Link to start up and breakin procedures 

Terms and Conditions
Warranty Information
GM Performance Crate Engine Start-up Instructions

Still have questions or want more information, Please call us at 847-276-8110