> Instruction Link
The affordable LSX crate engine has arrived!
GM Performance parts takes the economical LSX Bowtie block and combines it with the LS3's high flow L92 style heads and mostly internal components we swap the pistons for forged parts), to create the affordable, high revving LSX376 crate engine. It represents the essence of LS performance - exceptional airflow capability in straightforward packaging that delivers huge performance without the power adder.
We deliver the LS376 without an intake or oil pan and without any front accessories. So whether you top the engine with a carburetor or production style fuel injection system, it's suitable for your street rod, '57 Chevy or '71 Camaro - be it on the street or on the strip.
Our horsepower and torque ratings are based on using the production style fuel injection system.
Due to the number of application variations, the LSX376 crate engine is supplied with a dust shield instead of an oil pan, Any LS style oil pan and pickup that will fit your chassis can be used. Also, the LSX376 valve covers do not include mounting provisions for mounting the ignition coil brackets. Aftermarket or custom relocation brackets must be used.
Power: 450 HP @ 5900 RPM, 444 ft. lbs. of torque @ 4600 RPM
Displacement: 376 CID, 6.2L
Bore x Stroke: 4.060” x 3.620”
Compression Ratio: 9:1
Recommended Fuel: 92 Octane
Block: LSX Cast Iron with 6 bolt cross bolted main caps
Crankshaft: Nodular Iron, standard 6 bolt flange
Connecting Rods: Powdered Metal Steel
Pistons: Forged Aluminum
Camshaft: Steel Hydraulic Roller Tappet
Cam Lift: .551” Intake / .522” exhaust
Cam Duration @ .050”: 204 deg. Intake / 211 deg. Exhaust
Lobe Separation: N/A
Cylinder Heads: Aluminum LS3 Rectangular style ports
Combustion Chamber: 68cc
Valves: 2.160” Intake/ 1.590” Exhaust
Rocker Arms: Cast Roller Trunnion, 1.7:1 Ratio
Maximum GM Recommended RPM: 6600
• Fully GM assembled long block
• Harmonic Balancer
• Front timing cover
• 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 six-bolt crank flange
• Assembly shipped without intake manifold or oil pan (dust shield installed for shipment)
• Recommended max boost — 8 PSI
California Proposition 65 Warning