Blueprint Engines Pro Series Chevy 540 C.I.D. 670 Hp Base Long Block Crate Engines Ps5403Ct1

The Blueprint Engines Pro Series Chevy 540 C.I.D. 670 HP Base Long Block (PS5403CT1) delivers uncompromising big block power engineered for builders who demand reliability and precision.
Each unit is hand-assembled, blueprinted, and dyno-tested by Blueprint Engines in the USA using premium, all-new components — ensuring maximum consistency and durability.

This base long block configuration includes the short block, cylinder heads, and valve train components, ready for the user’s intake, ignition, and fuel system.
With its large-displacement 540 cubic inch platform, forged internals, and performance camshaft, the PS5403CT1 offers both raw power and long-term strength for serious street or strip applications.

Performance Overview:

• Factory dyno-tested at approximately 670 HP and 620 lb-ft torque

• 540 cubic inch (8.8L) displacement based on big block Chevy architecture

• Fully balanced and blueprinted assembly

• Forged rotating components for maximum strength

• Aluminum heads and hydraulic roller camshaft

• Built and tested in the USA

Key Features:

• Chevrolet big block V8, 540 cubic inches (8.8 liters)

• Cast iron 4-bolt main block

• Aluminum cylinder heads for improved flow and efficiency

• Hydraulic roller camshaft

• Forged steel crankshaft and connecting rods

• Forged aluminum pistons

• High-performance valve train and timing components

• Blueprinted, balanced, and professionally assembled

• “Base” long block — ready for intake and accessory installation

Applications:

• Pro-street and muscle car builds

• Custom hot rods and drag setups

• Classic big block Chevrolet platforms

• Performance marine and off-road builds (with appropriate setup)

Important Notes:

• Power ratings are approximate factory dynamometer results; actual performance varies by intake, exhaust, and tuning configuration.

• Intake manifold, carburetor, distributor, and front drive accessories not included.

• Not certified for use in emissions-controlled vehicles.

• Professional installation and setup are strongly recommended.

Key Technical Specifications