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SKU: BP4002CT1
BluePrint Engines GM Small Block Compatible 400 c.i. Engine - 500 Horsepower - Long Block
$7,349.00
400 c.i. 500 Horsepower Long Block

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 Lift and 236 Intake / 242 Exhaust Duration @ .050 - 110° LSA

Pistons: Forged

Crankshaft: Forged Steel Crank - 3.750" Stroke and 5.700" Rods

Fuel Recommendation: 91+ Octane

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Financing available at checkout with Affirm

Overview:

BluePrint Engines’ fully customizable GM Small Block Compatible 400 c.i. Long Block brings 500 horsepower of hard-hitting performance to builders who want big power and total control over their final setup. Built for enthusiasts who demand both strength and flexibility, this long block features premium components, precision machining, and the rock-solid reliability BluePrint is known for, all wrapped in a platform ready to be tailored to your exact vision. Whether you're chasing power, street-driven torque, or a show-quality build, this 400 c.i. foundation gives you the freedom to finish your engine your way while delivering the performance punch only a true BluePrint can provide

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
  • 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
  • 3.750" Stroke
  • Forged Steel Crank 5.700" Connecting Rods
  • 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:

  • BluePrint Valve Covers - BPP9518
  • BluePrint Dipstick - BPP9420
  • Timing Cover
  • Oil Pump
  • Oil Pan

Notes:

  • Not for EGR
  • 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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