Pace Performance Introduces 525-horse LS3

Pace Performance’s LS Muscle Car Series of crate motors has now been joined by the LS376/525 that blends Chevrolet Performance’s mighty 6.2L motor and race-derived ASA camshaft with a number of improvements by Pace as requested by its customers.

“This is a terrific engine combination that illustrates perfectly the performance potential of the LS engine family–and how it can be enhanced dramatically at an affordable price. Whether you’ve got a new Camaro or a classic Chevelle, this engine delivers terrific bang for the buck,” says GM U.S. vice president of Performance Vehicles and Motorsports, Jim Campbell, about the stock motor.

The ASA camshaft is a hydraulic roller with .525-inch lift on both the intake and exhaust sides; duration is 226 degrees on the intake side and 236 degrees on the exhaust side. Combined with 110-degree lobe separation angle, the LS376/525 is claimed to deliver excellent throttle response with exceptional breathing at high rpms. “The LS376/525 engine has an edge to it,” said Campbell. “You’ll notice it in the idle quality and you’ll feel it when the revs quickly climb.”

But there’s more to this once Pace Performance gets ahold of it—they remove the factory oil pan and install a low-profile item from Mast Motorsports. They also install an accessory drive system so the factory water pump and balancer are also removed, with Pace indexing and drilling the crank for pin/keyway. That is followed by the installation of the HeatShield Products’ I-M Shield intake manifold heat barrier, and the rocker arms are treated to heavy-duty roller trunions. A HP Tuner’s 6110 code scanner/reader is included, and can be upgraded for custom tuning with the purchase of additional software.

Best of all: you still get General Motors’ limited two-year/50,000-mile parts & labor warranty!

Specifications:
Power: 525 HP @ 6300 RPM, 489 ft. lbs. of torque @ 4400 RPM
Displacement: 376 CID, 6.2L
Bore x Stroke: 4.060″ x 3.620″
Compression Ratio: 10.7:1
Recommended Fuel: 92 Octane
Block: Cast Aluminum with 6 bolt cross bolted main caps
Crankshaft: Nodular Iron
Connecting Rods: Powdered Metal Steel
Pistons: Hypereutectic Aluminum
Camshaft: Steel Hydraulic Roller Tappet
Cam Lift: .525″ Intake / .525″ exhaust
Cam Duration @ .050″: 226 deg. Intake / 236 deg. Exhaust
Lobe Separation: 110 Degree
Cylinder Heads: Aluminum L92 style ports
Combustion Chamber: 68cc
Valves: 2.165″ Intake/ 1.590″ Exhaust
Rocker Arms: 1.7:1 Ratio
Balance: Internal
Reluctor: 58X
Maximum GM Recommended RPM: 6600

Engine Includes:
• Fully GM assembled long block
• Ignition Coils, Plug Wires and Spark Plugs
• Exhaust Manifolds
• EFI Intake with fuel rails, injectors and throttle body
• 14″ Auto Trans Flexplate
• Front timing cover
• Oil Filter
• Passenger Side RH Oil Dipstick and Tube

Pace Muscle Car Upgrades:

• Installed Mast Motorsports Muscle Car Swap Oil Pan

• Heatshield Products Intake Manifold heat shield

• Crank indexed & drilled for ATI balancer pin

• Comp Cams rocker arm roller trunions installed

• HP Tuner’s HPT-6110 code scanner/reader

Warranty:
General Motors limited 2-year/50,000-mile parts & labor warranty.