A factory-built foundation for forced induction!
Boost on a budget! That’s what you get with the LSX376. Chevrolet Performance takes the economical LSX Bowtie standard-deck block, adds blower-friendly 9.0:1 compression ratio, forged pistons and combines them with the LS3’s high-flow, rectangular-port heads to create an affordable foundation for supercharged and turbocharged combinations.
We deliver the LSX376 without an intake manifold and other accessories to keep the price lower and enable the installer to tailor the induction system to suit the blower or turbo system. Swap in the LSX376 in a vehicle originally equipped with an LS engine to give it a stronger bottom end for forced induction, or swap it into a street rod or classic muscle car body for a modern update.
Our horsepower and torque ratings are based on testing with the production-style, normally aspirated fuel injection system. More power is attainable with a carbureted induction system, but there’s no telling how much power you can realize with a carefully tuned turbo or supercharger system!
Check out our LS1 Engine Kit Installation Guide P/N 88959384 for details on installing an LS engine in a vintage vehicle.
LSX376 Tech Specs:
Engine Type: LSX-Series Gen IV Small-Block V-8
Displacement (cu in): 376 cu in (6.2L)
Bore x Stroke (in): 4.065 x 3.622 (103.25 x 92 mm)
Block (P/N 19244055): LSX cast-iron with 6-bolt, cross-bolted main caps
Crankshaft (P/N 12597569): Nodular iron
Connecting Rods (P/N 12607475): Powdered metal
Pistons (P/N 19244016): Forged aluminum
Camshaft Type (P/N 12603844): Hydraulic roller
Valve Lift (in): 0.551" intake / 0.522" exhaust
Camshaft Duration (@0.050 in): 204° intake / 211° exhaust
Cylinder Heads (P/N 12615879): LS3 rectangular port; with “as cast” 68cc chambers
Valve Size (in): 2.160 intake / 1.590 exhaust
Compression ratio: 9:1
Rocker Arms (P/N 12569167 int): Investment-cast, roll trunnion
Rocker Arms (P/N 10214664 exh): Investment-cast, roll trunnion
Rocker Arm Ratio: 1.7:1
Recommended Fuel: 87 octane
Maximum Recommended RPM: 6,600
Reluctor Wheel: 58X
• Assembly does not include any electronics
• Intended for pre-1976 street vehicles or any off-road vehicle
• Not intended for marine applications
• Requires LSX Ignition Controller P/N 19171130 for carbureted applications
• Standard LS 6-bolt crank flange
• Assembly shipped without intake manifold or oil pan (dust shield installed for shipment)