400 CID GM Small Block Compatible Longblock - 500HP

Unleash Unmatched Power with this 406ci Crate Engine from BluePrint Engines.

This isn't just an engine; it's a testament to raw power. Delivering a staggering 500 horsepower and 500 ft-lbs of torque, this crate engine is built for serious performance enthusiasts. Featuring a massive 4.125" bore, a forged steel crankshaft, forged pistons, and high-performance aluminum heads, this engine is engineered for maximum output. With its 10.3:1 compression ratio and aggressive camshaft, this engine demands premium fuel (93 octane or higher) and is ready to conquer any challenge.

Key Features:
• Massive 4.125" Bore: Delivers exceptional displacement for increased power output.  
• Forged Internals: Robust forged steel crankshaft, forged pistons, and high-strength connecting rods ensure durability and withstand the demands of extreme performance.
• High-Performance Cylinder Heads: BluePrint's HP8103 aluminum heads with 64cc chambers and aggressive porting maximize airflow for increased power and efficiency.
• Aggressive Camshaft: A hydraulic roller cam with .555/.576 lift and 236/242 duration provides aggressive valve timing for maximum power and performance.
• Precision Machining: The engine block is meticulously machined with align honed main bearing bores and precisely honed cylinders for optimal performance and reliability.

This engine is designed for serious performance enthusiasts seeking maximum power and thrilling performance.