Blueprint Engines Gm 400 C.I.D. 508 Hp Base Long Block Crate Engines Bp4002Ct1

The Blueprint Engines GM 400 C.I.D. 508 HP Base Long Block Crate Engine (BP4002CT1) is a precision-built, high-output powerplant designed for drivers who demand reliable and consistent performance from a small block Chevrolet platform.

This base long block features a 400 cubic inch stroker design that delivers impressive torque and horsepower across the RPM range. It’s built with 100% new parts — including a forged crankshaft, forged connecting rods, and forged aluminum pistons — ensuring long-term reliability under high load conditions.

Each engine is balanced, blueprinted, and dyno-tested in the USA to validate quality and performance. Aluminum performance heads, a hydraulic roller camshaft, and precision assembly give the BP4002CT1 the strength and efficiency demanded by modern builders while maintaining a classic V8 feel.

Performance Overview:

• Factory-tested output: approximately 508 HP / 473 lb-ft torque

• Based on the proven GM small block architecture

• Ideal for custom builds, street rods, and muscle car projects

• Fully balanced rotating assembly and aluminum heads for optimal performance

• Dyno-tested for consistency and quality control

Key Highlights:

• 400 cubic inch small block stroker configuration

• 100% brand new components (no remanufactured parts)

• Hydraulic roller camshaft for smooth performance and reliability

• Aluminum cylinder heads for improved airflow and cooling efficiency

• Forged internals designed for durability and longevity

• Sold as a base long block, allowing custom intake, carburetion, and ignition selection

Ideal Applications:

• Classic Chevy restorations and performance upgrades

• Street performance and hot rod projects

• Restomods and custom builds

• Off-road and marine performance (non-emissions applications)

Important Notes:

• Horsepower and torque are approximate factory test results; actual results depend on intake, exhaust, and tuning setup.

• Intake, ignition, fuel system, and accessories are not included.

• Not approved for use in emissions-controlled vehicles unless explicitly stated.

• Professional installation and tuning are recommended for best results.

Key Technical Specifications