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19244096 - GM LS 5.3L 327CID , 327 HP / 347 Ft Lbs. Crate Engine with Install Kit

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The LS327 is now offered in deluxe form that includes everything from the carbureted intake to the ignition coils, coil brackets, shields, plug wires, gaskets and installation hardware. The manifold is GMPP's aluminum, spider-type intake (88958675) that's optimized for the LS327's cathedral-port heads.

We started with the base engine - the tough, proven, and dependable 5.3L engine. It's the same long-lived production engine that you'll find in our award winning full-sized truck and SUV line. The stock 5.3 offers a dependable 295 horsepower and 325 lb.-ft of torque from the 96mm bore by 92mm stroke engine design.

What makes our 5.3 High Output crate engine so special is that our engineers added a GM Performance Parts custom cam and Grafal-coated pistons. With these simple upgrades, the 5.3 HO kicks out 327 horsepower and 347 lb.-ft of torque. And, just like the stock 5.3, the 5.3 HO is capable of thousands of miles of dependable service while returning outstanding fuel mileage, thanks to the superior design of the LS Family of engines.

Power: 327 HP @5500 RPM, 347 ft. lbs. of torque @ 4600 RPM
Displacement: 327 CID, 5.3L
Bore x Stroke: 3.78” x 3.62”
Compression Ratio: 9.5:1
Recommended Fuel: 87 Octane
Block: Cast Iron, with 6 bolt, cross-bolted iron caps
Crankshaft: Nodular Iron
Connecting Rods: Powdered Metal Steel
Pistons: Hypereutectic Aluminum
Camshaft: Hydraulic Roller Tappet
Cam Lift: .467” Intake / .479” exhaust
Cam Duration @ .050”: 196deg. Intake / 201 deg. Exhaust
Lobe Separation: 116 Degree
Cylinder Heads: Aluminum Cathedral Port
Combustion Chamber: N/A
Valves: 1.89” Intake/ 1.55” Exhaust
Rocker Arms: Cast Roller, 1.7:1 Ratio
Reluctor Wheel:24X
Balance: Internal
Maximum GM Recommended RPM: 6000

Engine Includes:
• Fully GM assembled long block
• Cast OE valve covers
• Cast OE valley cover
• Oil pump, pick-up and Truck-Style oil pan
• Front timing cover
• Truck Water Pump
• Harmonic Balancer-Pulley
• 14” Auto Trans Flexplate
• Single Plane GM Performance 4-bbl Intake with bolts and gasket
• Ignition Coils, brackets, bolts and harnesses
• Plug Wires

General Motors limited 2 year / 50,000 mile parts & labor warranty. Click on Document tab above for full details.

Related Engines and Components:
Fully Assembled 5.3L Carbureted Turn-Key Crate Engine
Fully Assembled 5.3L with Dual Quad Carbs and Polished Finish Crate Engine
24X Engine Controller
Edelbrock LS 4 barrel Intake with Engine Controller Package
GMP-12499529-C 290HP Fully Assembled Retro-Style Crate Engine
LS Engine Swap Mounts and Conversion Kits
GM LS Engine Serpentine Drive Packages
LS Engine to SBC and BBC Auto Trans Conversion Kit
Complete LS Engine 4 and 5 speed manual trans conversion packages
LS Engine Swap Oil Pan Packages

Application List




Shipping Information

  • Item Requires Shipping
  • 500.0 lbs.
  • W37.0000” x H36.0000” x L42.0000”
  • FREE 48 State Shipping

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