SKU: B427KTKX
BluePrint Engines GM Small Block Compatible 427 c.i. Engine and TKX Manual Transmission - 540 Horsepower - Standard Edition Builder Series - Polished Pulley Kit - Carbureted
$19,199.00
427 c.i. 540 Horsepower Builder Series

Horsepower & Torque: 540 Horsepower / 535 ft. lbs. Torque

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

Fuel Recommendation: 91+ Octane

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Financing available at checkout with Affirm

Overview:

BluePrint Engines’ GM Small Block Compatible 427 c.i. Pro Series Engine with a TKX Manual Transmission delivers an exhilarating 540 horsepower and a true driver-focused experience. Featuring modern fuel injection, a polished pulley kit, and top-tier Pro Series components, this Standard Edition Builder Series package blends raw small-block muscle with precise, hands-on control. Perfect for performance enthusiasts, it offers crisp shifts, instant throttle response, and the unmistakable excitement of a high-revving, high-horsepower street machine.

Description:

  • Horsepower & Torque: 540 Horsepower / 535 ft. lbs. Torque
  • Compression Ratio: 10.0:1
  • BluePrint Engines Aluminum Heads
  • BluePrint Engines Hydraulic Roller Cam
  • BluePrint Engines Forged Crank
  • BluePrint Engines Forged Pistons

Block:

  • BluePrint Engines High Strength Cast Iron Block
  • Manufactured and Machined in the USA!
  • Drilled and Tapped for Clutch Linkage
  • Mech Fuel Pump Provision: Yes
  • Passenger Side Dipstick
  • 1-Piece Rear Main Seal
  • 4-Bolt Main
  • 4.125" Bore

Rotating Assembly:

  • BluePrint Forged Crankshaft
  • 4.000" Stroke
  • Forged 6.000" Connecting Rods
  • Forged Pistons
  • Internally Balanced Front and Rear

Cylinder Heads:

  • BluePrint Aluminum Cylinder Heads - HP8103
  • 64cc Chamber
  • 2.08" Intake / 1.60" Exhaust Valves
  • 220cc Intake / 67cc Exhaust Runners

Cam Specs:

  • Hydraulic Roller
  • .577 Intake / .577 Exhaust Lift
  • 240 Intake / 248 Exhaust Duration
  • @ .050-112 Degree Lobe Separation

Ignition Timing:

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

Also Includes:

  • Holley 850cfm Double Pumper Carburetor w/ Manual Choke - BPP04781S
  • Satin Aluminum Intake Manifold - BPP427454INT
  • Pro Series Ready Run Distributor - BPP3503BK
  • Thermostat and Thermostat Housing
  • BluePrint Valve Covers - BPP9518
  • Spark Plugs and Wires
  • Electric Fuel Pump
  • Timing Cover
  • Oil Pan
  • Polished Front Accessory Drive - BPP350FDACPS4
    • Reverse Rotation Short Water Pump
    • Type II Power Steering Pump
    • Remote Power Steering Pump Reservoir
    • 140amp 1-wire Alternator
    • 7B10 Peanut Style Air Conditioning Compressor

Assembled with Complete TKX Transmission Package:

  • Mcleod Super Street Pro Single Disk Clutch
  • Hydraulic Throw Out Bearing
  • Bell Housing
  • Billet Flywheel
  • Starter
    • First Gear Ratio: 2.87:1
    • Second Gear Ratio: 1.89:1
    • Third Gear Ratio: 1.28:1
    • Fourth Gear Ratio: 1.00:1
    • Fifth Gear Ratio: 0.81:1

Notes:

  • The front accessory drive on this engine fits many vehicles, however it is the customer responsibility to accurately measure and confirm fitment. Note this is a low-profile design, but things such as power steering hoses, alternator wiring, and additional fittings/fabrication may be required on some vehicles.
  • Not for use in pollution-controlled vehicles.
  • The performance aluminum cylinder heads on this engine feature a .500 raised port vs OEM.

WARNING: Cancer and Reproductive Harm
Bragging Rights Included.

EVERY BLUEPRINT ENGINE ACES THE DYNO TEST

We make sure we hit our target horsepower and proper torque with every crate engine. We use an advanced computerized balancer in our in-house dyno testing rooms 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.

All specs, zero speculation: A comprehensive, dyno-generated printout showing your critical engine specs will accompany your delivered engine — every time. 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 exact engine’s dyno results.

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