Product Summary

LS3, Long Block Crate Engine Type, 473 ft./lbs. Torque

    Key Specs

    Crate Engine TypeLong Block
    Engine Displacement376 cu. in.
    Horsepower495 horsepower
    Compression Ratio10.7:1
    Torque473 ft./lbs.

    Need To Know

    Truck Ship

    Truck shipments must be pre-paid with a credit card, certified check or money order

    Quick and Easy Returns

    Return Policy

    LS Classic GMLS9001 Details

    All of our LS Classic components are available, installed, on one of our Classic Crate Engines. We start with a brand new, GM 495 horse power LS3 right out of the box and with a two year warranty. We then paint it orange (if you so desire) and begin assembling your desired components until we have the perfect crate engine for your project. Once completely assembled we put the engine on our in-house run stand, load your Holley EFI ECU with our start-up tune, and run your engine to check for leaks and oil pressure. After we are satisfied that your engine will operate with no issues, we put it back in the original GM crate and ship it directly to you or your builder. Once you receive your engine it is as simple as installing the engine, routing the Holley wiring harness, terminating a couple of power and ground wires, and putting fuel pressure to the engine. We guarantee an easy start up!

    All Crate Engines include:

    • New GM LS3 495 HP Crate Engine with two year warranty
    • Painted orange or unpainted
    • Holley Terminator engine management system with O2 sensor and trans control
    • Corvette water pump, thermostat housing, and balancer
    • High performance rear dump exhaust manifolds
    • 14" automatic transmission flex plate

    GMLS9001 14" Classic Crate Engine, painted orange, with cast finish Small Block Chevy Valve Covers

    • Painted orange
    • 14" Classic Intake Kit
    • Cast finish Small Block Chevy style valve covers
    • Valley plate with oil fill tube and machined finish
    • Two year warranty

    CARB Warning

    For race/ off road use or for use on pre-1966 vehicles.

    Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

    LS Classic GMLS9001 Specifications

    MFG. Part #GMLS9001
    BrandLS Classic
    Crate Engine TypeLong Block
    Engine Displacement376 cu. in.
    Horsepower495 horsepower
    Compression Ratio10.7:1
    Torque473 ft./lbs.
    Camshaft TypeHydraulic Roller Tappet
    Cylinder Head MaterialAluminum
    Piston MaterialHypereutectic Aluminum
    Crankshaft MaterialNodular Iron
    Combustion Chamber Volume68cc
    Camshaft Duration (.050 in)219° intake / 228° exhaust
    Camshaft Lift (in).525 intake / .525 exhaust
    Bore x Stroke (in)4.065 x 3.622 (103.25 x 92mm)
    Carburetor IncludedNo
    Intake Manifold IncludedYes
    Distributor IncludedNo
    Connecting Rod MaterialPowdered Metal
    Valve Covers IncludedYes
    Engine BalanceInternal
    Cylinder Heads IncludedYes
    Rear Main Seal Style1-piece
    Throttle Body IncludedYes
    Oil Pan IncludedYes
    Timing Cover IncludedYes
    Water Pump IncludedYes
    Harmonic Balancer IncludedYes
    Flexplate IncludedYes
    Flywheel IncludedNo
    Air Cleaner IncludedYes
    Spark Plugs IncludedYes
    Spark Plug Wires IncludedNo
    Computer IncludedYes
    Wiring Harness IncludedYes
    Accessory Bolt Holes DrilledYes
    Recommended FuelPremium
    Maximum RPM6600
    Cylinder Head StyleAssembled
    Intake Valves IncludedYes
    Intake Valve Diameter2.165"
    Exhaust Valves IncludedYes
    Exhaust Valve Diameter1.59"
    Valve Spring IncludedYes
    Rocker Arm Studs IncludedYes
    Rocker Arms IncludedYes
    Heat CrossoverYes
    Head Gaskets IncludedYes
    Intake StyleElectronic Fuel Injection
    Intake FinishNatural
    Intake MaterialAluminum
    Intake Gaskets IncludedYes
    Intake Manifold Fasteners IncludedYes
    Camshaft IncludedYes
    Intake Duration (.050" Lift)219°
    Exhaust Duration (.050" Lift)228°
    Lifters IncludedYes
    Cylinder HeadsAluminum L92-style port; "as cast" with 68-cc chambers
    Valve Size (in)2.165 intake / 1.590 exhaust
    Rocker ArmsInvestment-cast, roller trunnion
    Rocker Arm Ratio1.7:1
    Maximum Recommended RPM6600
    Reluctor Wheel58x
    Internally BalancedYes
    Displacement376 (6.2L)
    BlockCast-aluminum with six-bolt, cross-bolted main caps
    PistonsHypereutectic Aluminum
    GTIN Code847087045254
    NotesEngine does not include starter or front engine accessory drive. Engine harness requires installation. Valve covers do not have provisions for mounting ignition coils - remote mounting is required. Includes cast finish SBC style valve covers and round chrome air cleaner. Engine is painted orange.
    Sold in QuantityEach