GM SB Compatible 427 c.i. Engine and 700R4 Automatic Transmission - 540 HP - Standard Edition Builder Series with Polished Pulley Kit - Carbureted

GM SB Compatible 427 c.i. Engine and 700R4 Automatic Transmission - 540 HP - Standard Edition Builder Series with Polished Pulley Kit - Carbureted

SKU: B427K700

GM SB Compatible 427 c.i. Engine and 700R4 Automatic Transmission - 540 HP - Standard Edition Builder Series with Polished Pulley Kit - Carbureted

SKU: B427K700

HP & Torque: 540 HP / 535 FT. LBS

Cylinder Heads: BluePrint Engines Aluminum Cylinder Heads

Compression Ratio: 10:1

Camshaft: Hydraulic Roller Cam - .577 Intake / .577 Exhaust and 240 Intake / 248 Exhaust Duration @ .050 – 112 LSA

Pistons: Forged

Crankshaft: Forged Steel Crank – 4.000" Stroke and Forged 6.000" Rods

Regular price $18,899.00
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  • Financing available at checkout with Affirm


  • HP & Torque: 540 HP / 535 FT LBS
  • Compression Ratio: 10.0:1
  • Aluminum Heads
  • Hydraulic Roller Cam
  • Forged Crank
  • Forged Pistons


  • NEW BluePrint Cast Iron Block
  • Manufactured and Machined in the USA!
  • 4-Bolt Main
  • 4.125" Bore
  • 1-Piece Rear Main Seal
  • Mech fuel pump provision: Yes
  • Passenger Side Dipstick
  • Drilled and tapped for clutch linkage

Rotating Assembly:

  • New BluePrint Forged Crankshaft
  • 4.000" Stroke
  • Forged 6.000" connecting rods
  • Forged Pistons
  • Internal Front/ Internal Rear

Cylinder Heads:

  • BluePrint Aluminum Cylinder Heads - HP8103
  • 64cc chamber
  • 2.08" intake/1.60" exhaust valves
  • 220cc intake/67cc exhaust runners

Cam Specs:

  • Cam Type: Roller
  • .577 Intake .577 Exhaust
  • 240 Intake / 248 Exhaust duration
  • @ .050 - 112-degree lobe separation

Ignition Timing:

  • Initial timing - 10-16° and Total timing 32-34°

Also Includes:

  • Satin Aluminum Intake Manifold 
  • 850 CFM Carburetor
  • Valve covers, oil pan and timing cover
  • Spark plugs & wires
  • Thermostat and thermostat housing
  • Installed complete front accessory drive with A/C and P/S
  • Electric Fuel Pump

Assembled with Complete 700r4 Automatic Transmission Package:

  • 700R4 Complete Package
  • 2200-2400 Stall Torque converter
  • Flex plate
  • Starter


  • Not for use in pollution-controlled vehicles.
  • Due to numerous tire/rear gear combinations, this transmission does NOT ship with a speedometer gear, or sender housing. 
  • The performance aluminum cylinder heads on this engine feature a .500 raised port vs OEM.

    Your BluePrint engine was dyno tested with the parts and specifications listed below.  If you prefer to install a different part, your engine may not produce the horsepower recorded on your dyno sheet.

    Part Number: B427K700

    Fuel Delivery Type: 850 CFM Carburetor

    Spark Plug: BPP7938 NGK 7938 BKR5E (.750 inch reach, 14mm thread, 5/8 hex, plug)

    Spark Plug Gap: .035"

    Harmonic Balancer: Non-Weighted

    Flexplate/Flywheel: Non-weighted

    Stall Converter: 2200+

    Intake Manifold: N/A

    Fuel Recommendation: 91 Octane

    Timing (Initial/Total Advance): Initial timing - 10-16° and Total timing 32-34°

    Firing Order: 1,8,4,3,6,5,7,2

    Notes: New BluePrint block manufactured and machined in the USA. Recommended break in oil for your BluePrint Crate Engine: BPP710, Not for EGR

    Header Partners: 
    Click here for our Header Partners and recommendations.

    Click here to download a copy of the Installation Guide that came with your BluePrint engine.


    The satisfaction of our customers is our highest priority at BluePrint Engines. We use quality components to balance your engine's rotating assembly within two grams of spec. We dyno test your crate engine and certify that it's ready to deliver horsepower and torque.

    We give your BluePrint engine the industry's best-in-class warranty for 30-months / 50,000 miles — with the extra confidence only BluePrint can provide. Our warranty applies to individual or professional installations and is fully transferable.

    For a detailed overview of our warranty, click here.


    We make sure we hit our target horsepower and proper torque with every crate engine. We use an advanced computerized balancer to get our rotating assemblies within two grams, ensuring silky smooth power over the entire RPM range. That's precisely why our engines sound and run better than our competitors.


    A comprehensive, dyno-generated printout showing these critical specs will accompany your delivered engine. No more guessing or wondering what your installed engine's real-world peak horsepower and torque ratings actually are. Any doubters in the crowd? Simply flash 'em your dyno results!

    This engine will be dyno tested before it ships to you at no additional charge (others charge $500)!

    BluePrint Engines Crate Engine Break-In Oil — 1 Quart
    BluePrint Engines 10w30 Engine Oil - 1 Quart
    TrueBlue Performance Octane Boost
    BluePrint Engines TrueBlue Performance Octane Booster
    GM SB and BB Compatible Oil Filter
    Liquid Filled Fuel Pressure Gauge - 0-15 psi
    EFI Fuel Pump Kit 526-7 - For Holley 550-510 and 550-511
    Holley EFI In-Tank Retrofit Fuel Pump - 450 LPH - Return Style
    EFI Billet Aluminum Fuel Pressure Bypass Regulator - 40-75 PSI and -6AN ORB
    Liquid Filled Fuel Pressure Gauge - 0-100 PSI
    LS Air Intake Kit
    BluePrint Parts – GM LS Compatible Water Neck – 45°
    BluePrint Parts – GM LS Compatible Water Neck – Straight