SKU: B400KTKX
BluePrint Engines GM Small Block Compatible 400 c.i. Engine and TKX Manual Transmission - 500 Horsepower - Standard Edition Builder Series - Polished Pulley Kit - Carbureted
$17,299.00
400 c.i. 500 Horsepower Builder Series

Horsepower & Torque: 500 Horsepower / 510 ft. lbs. Torque

Cylinder Heads: BluePrint Engines Aluminum Cylinder Heads

Compression Ratio: 10.3:1

Camshaft: Hydraulic Roller Cam - .555 Intake / .576 Exhaust and 236 Intake / 242 Exhaust Duration @.050–110 LSA

Pistons: Forged

Crankshaft: Forged Crank - 3.750" Stroke and OEM Type 5.700" Rods

Fuel Recommendation: 91+ Octane

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Financing available at checkout with Affirm
**This package features a carbureted engine. EFI engine pictured as rep image.

Overview:

BluePrint Engines’ GM Small Block Compatible 400 c.i. Engine paired with a TKX Manual Transmission delivers a thrilling 500 horsepower with classic carbureted performance. Part of the Standard Edition Builder Series, this package comes complete with a polished pulley kit and premium components, offering a perfect blend of power, reliability, and hands-on driving excitement. Built for enthusiasts who crave precise shifting, instant throttle response, and the iconic small-block experience, this engine and transmission combo transforms any build into a high-performance machine ready to dominate the road or track.

Description:

  • Horsepower & Torque: 500 Horsepower / 510 ft. lbs. Torque
  • Compression Ratio: 10.3:1
  • 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
  • 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
  • 3.750" Stroke
  • Forged I Beam 5.700" Connecting Rods w/ 150,000 PSI Bolts
  • Forged Pistons
  • Internally Balanced Front - Externally Balanced 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
  • .555 Intake / .576 Exhaust Lift
  • 236 Intake / 242 Exhaust Duration
  • @ .050-110 Degree Lobe Separation

Ignition Timing:

  • 10-16° Initial and Total Timing 32-34° at 3500 RPM

Also Includes:

  • Holley 850cfm Double Pumper Carburetor w/ Manual Choke
  • Intake Manifold Dual Plane Satin Aluminum - BPP350VINT
  • Pro Series Ready Run Distributor - BPP3503BK
  • Thermostat Housing - BPP10108470
  • Mechanical Fuel Pump - BPP61073
  • Thermostat - BPP180TS
  • Spark Plugs - BPP7938
  • Plug Wire Separators
  • Spark Plug Wires
  • Valve Covers
  • Timing Cover
  • Oil Filter
  • 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.
  • The performance aluminum cylinder heads on this engine feature a .500 raised port vs OEM.
  • Package Ships assembled as pictured. 
  • IF THIS IS BEING ORDERED FOR A FACTORY FIVE VEHICLE, STOP AND CALL US AT 1-800-483-4263 FOR PROPER FITMENT OR VISIT FACTORYFIVEENGINES.COM

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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