Chevy Small Block 350ci Base Crate Engine Kit 373HP 400TQ w/Vortec Cast Iron Heads
Product Discontinued
BLUEPRINT ENGINESPART NUMBER: 138-BP3503CT1K

Chevy Small Block 350ci Base Crate Engine Kit 373HP 400TQ w/Vortec Cast Iron Heads

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This product is no longer available. Please call customer service for assistance at 1-800-345-4545.

Base Engine Kits
Small Block Chevy 350ci Base Engine Kit
  • 373HP/400TQ Engine w/Vortec Cast Iron Cylinder Heads
  • Intake Manifold & Carburetor
  • HEI Distributor & Coil
  • Spark Plugs & Wires
  • Oil Filter
  • Gaskets & Fasteners

    Kit Includes:

    Blueprint Engines are a great choice for drivable and reliable high-performance engines. All rotating assemblies are balanced within 2 grams on a computerized balancer. Blueprint Engines are dyno tested and include dyno sheets. 
    Best of all they feature a 30 month/50,000 mile warranty.

    Recommended Stall Converter: 1800-2200 rpm
    Recommended Fuel: 87 Octane

    Block:

    • Seasoned & Reconditioned Chevy 2-Bolt Main Block
    • 1-Piece Rear Main Seal
    • Square and Parallel Decked
    • Align Honed Main Bearing Bore
    • Cylinders are Sonic Tested for Thickness
    • Cylinders Honed on a Computer-Controlled Machine to within .0002 in. Straightness and Roundness

    Rotating Assembly:

    • Chevy Cast Iron Crankshaft - 3.480 in. Stroke
    • Chevy 5.700 in. Connecting Rods
    • Hypereutectic Pistons
    • 9.3:1 Compression Ratio
    • Internal Front, External Rear Balanced (Late 350 Weighted Flexplate Recommended, Not Included)

    Cylinder Heads:

    • GM Vortec Cast Iron

    Camshaft Specs:

    • Hydraulic Roller Tappet
    • Duration @ .050 in. Lift: 221 Intake / 226 Exhaust
    • Lift: .495 in. Intake / .502 in. Exhaust
    • Lobe Separation: 110-degrees
    • Camshaft is degreed to ensure maximum horsepower

    Timing Specifications:

    • Initial Timing: 14-degrees
    • Total Timing: 34-degrees
    • Firing Order: 1-8-4-3-6-5-7-2
    • Spark Plugs: Champion 13 with a .045 in. Gap Recommended (Not Included)

    Other Features:

    • New chrome valve covers
    • New chrome timing cover
    • New oil pan
    • Brass freeze plugs

    Engine Break-In Procedure

    Use or break-in oil or conventional (non-synthetic) multi-viscosity oil with zinc additive for the first 500 miles of operation. Avoid hard acceleration for sustained periods. Periodically change the engine speed while driving to help seat the rings. While the engine is running, be sure to check oil pressure and coolant temperature, and check for fluid leaks, such as oil, transmission fluid, fuel, and coolant/antifreeze. Also listen for any unusual sounds. Should you hear an unusual sound, shut the engine off, check for the source, and correct it.

    Engines with flat tappet cams only - Start the engine and bring it to 2,000 RPM. Get the engine running smoothly. Then vary the engine speed from 1,800-2,200 RPM in a slow acceleration/deceleration cycle for 30 minutes. This is necessary to provide adequate oil splash and lifter rotation to properly mate each lifter to its lobe. 

    At 500 Miles change the engine oil and filter using conventional (non-synthetic) oil. After 6,000 miles, synthetic oils can be used in your engine.  For flat tappet cam engines, continued use of oil with zinc or a zinc additive for the life of your engine is recommended. 

  • Part TypeEngine
    BrandBLUEPRINT ENGINES
    Package Height5.35 in (135.89 mm)
    Smallest Particle Filtered23 microns
    Removal Nut SizeN/A
    Housing FinishNatural
    ChokeElectrical
    Housing MaterialAluminum
    Ignition Box RequiredNo
    Outlet QuantityN/A
    Spark Plug Boot EndsEight 90 degree
    Carburetor QuantityOne
    Gasket Outside Diameter3.75 in (95.25 mm)
    Port Height2 in (50.8 mm)
    Basic Operating Rpm RangeIdle-5,500
    Thread Size (In.)5/16-18
    Computer-Controlled CompatibleNo
    Filter Bypass Relief ValveYes
    Inlet QuantityN/A
    Rfi SuppressionYes
    Gear MaterialSteel
    Advance TypeVacuum and Mechanical
    Diameter (Mm)8
    Distributor Boot MaterialSilicone
    Water Crossover StyleOpen
    FlangeSquare Bore
    Marine UseNo
    PositionN/A
    Oil Filter StyleCanister
    ColorRed
    Wire ColorRed
    Port Width1.08 in (27.4 mm)
    Fastener FinishZinc
    Cylinder Head TypeGM Vortec/Edelbrock E-TEC
    Thread Size13/16-16
    Thickness0.12 in (3 mm)
    Intake Section IncludedComplete
    Spark Plug Boot MaterialSilicone
    Gasket Inside Diameter2.875 in (73.025 mm)
    Gasket Thickness0.27 in (6.858 mm)
    Coil Wire IncludedNo
    Trigger StyleMagnetic
    Outlet AttachmentN/A
    Carburetor FlangeSquare bore
    Gasket MaterialNitrile Rubber
    Outside Diameter3.65 in (92.7 mm)
    Removal NutNo
    Part CategoryPerformance Parts
    Inlet SizeN/A
    Intake StyleDual plane
    EmissionWithout EGR
    Port StyleRectangular
    Distributor TypeHEI/Breakerless
    AssembledYes
    Cfm600
    Engine Make/SizeChevy Small Block (262-400)
    Spark Plug Boot ColorBlack
    Distributor Terminal EndsMale/HEI
    Distributor Boot ColorBlack
    Secondary TypeAir valve
    Rpm RangeIdle-5500
    Fastener StyleBolt
    Slip CollarNo
    Mechanical Tach DriveNo
    FinishBall Burnished
    Boot Type90 Degree
    Engine Block StyleStock/OEM standard Deck
    UsageStreet/Hi-Performance
    Outlet SizeN/A
    Distributor Cap ColorBlack
    QuantitySold individually
    MaterialAluminum
    BarrelFour
    Inlet AttachmentN/A
    Fastener MaterialSteel
    Anti-Drainback ValveYes
    EgrWithout EGR
    TypeAutomotive
    Throttle Linkage TypeUniversal
    Ford KickdownNo
    FuelGasoline
    Maximum Burst Pressure (Psi)450
    Distributor Gear RotationStandard
    Conductor StyleSpiral core
    Cap StyleMale/HEI
    Engine Displacement5.7L/350
    Intake Manifold Height4.67 in (118.618 mm)
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews

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