BLUEPRINT ENGINES PSLS4273CTF Ci Engine Gm 628 580-FT

( Brand: Blueprint Engines ), ( Manufacturer Part Number: PSLS4273CTF ), ( Type: Complete Assembly ), ( Number Of Valves: 16 ), ( Engine Size: 7 L ), ( Country Of Origin: United States ), ( Fuel Type: Gasoline )

Review BLUEPRINT ENGINES Ci Crate Engine Gm Compatible 628 Hp Ft Lbs fits LS3 427 580

The Blueprint Engines PSLS4273CTF 427 Ci Engine is a high-performance powerplant designed for those seeking ultimate horsepower and torque in their GM LS3 applications. This engine is a remanufactured 427 cubic inch unit, boasting an impressive 628 horsepower and 580 ft-lb of torque at 5600 RPM.

This engine is built using a combination of CNC machining and meticulous assembly processes to ensure a perfect fit and optimal performance. Each component is inspected and, if necessary, replaced with new OEM-grade parts. The engine block is made of cast iron and features a high-performance cylinder head design. The cylinder heads are CNC ported to maximize airflow and fuel delivery to the combustion chamber.

1. CNC-machined cylinder heads: These heads are ported to optimize airflow, improve combustion efficiency, and enhance overall engine performance.

2. High-performance camshaft: The engine features a high-lift, roller camshaft that provides greater valve lift, improved valve control, and increased power output.

3. High-performance intake manifold: This manifolds optimizes the airflow into the engine, allowing it to breathe more efficiently and producing more power.

4. High-performance fuel system: The fuel system includes high-flow fuel injectors and a high-pressure fuel pump, ensuring the engine receives the necessary fuel for maximum power output.

5. Forged pistons and connecting rods: These components are stronger and more durable than their stock counterparts, allowing the engine to handle the increased power and torque without failing.

6. High-performance crankshaft: The engine's crankshaft is designed to withstand the high-power output generated by the engine, ensuring durability and reliability.

7. High-performance oiling system: The engine's oiling system includes a high-capacity oil pump, oil cooler, and high-performance oil filter, ensuring the engine receives the necessary lubrication for optimal performance.

With its impressive power output, high-quality components, and meticulous assembly processes, the Blueprint Engines PSLS4273CTF 427 Ci Engine is the perfect choice for those looking to take their GM LS3 application to the next level. Whether you're building a high-performance street car or a race-winning track car, this engine is sure to provide the power and reliability you need to succeed.

The GM LS3 6.2L V8 engine, producing 628 horsepower and 580 ft-lb of torque, is a high-performance engine option, especially for those looking to enhance the power output of their vehicles. On the other hand, the Blueprint Engines PSLS4273CTF 427 ci (7.0L) engine is a custom-built, high-performance engine that also delivers impressive power, producing around 650 horsepower and 615 ft-lb of torque. Both engines have their unique advantages and disadvantages.

1. Factory-built engine: The LS3 engine is a factory-built engine from General Motors, ensuring consistent quality and reliability.

2. Wide availability: The GM LS3 engine is more commonly available in the aftermarket, making it easier to find used or remanufactured engines for various applications.

3. Factory support: GM provides factory support, making it easier to troubleshoot any issues and obtain replacement parts.

1. Performance limitations: Although the LS3 engine delivers impressive power, it may not offer the same level of customization and tuning potential as a custom-built engine like the Blueprint Engines PSLS4273CTF 427 ci engine.

2. Limited power output: Compared to the Blueprint Engines PSLS4273CTF 427 ci engine, the LS3 engine produces less power.

1. Custom-built: Each Blueprint Engines PSLS4273CTF 427 ci engine is custom-built, ensuring that it meets the specific needs and power requirements of the customer.

2. High power output: The Blueprint Engines PSLS4273CTF 427 ci engine delivers more power than the GM LS3 engine, making it an ideal choice for high-performance applications.

3. Customization: Blueprint Engines allows customers to customize their engines with various options, such as different camshafts, intake manifolds, and other performance enhancers.

1. Custom-built complexity: Since each engine is custom-built, the installation and tuning process may be more complex and time-consuming compared to a factory-built engine like the GM LS3.

2. Higher cost: Custom-built engines like the Blueprint Engines PSLS4273CTF 427 ci engine typically come with a higher price tag than factory-built engines.

Both the GM LS3 6.2L engine and the Blueprint Engines PSLS4273CTF 427 ci engine offer impressive power output, but they cater to different needs. The GM LS3 engine is a factory-built engine that provides consistent quality, reliability, and wide availability, making it an excellent choice for those looking for a proven powerhouse. On the other hand, the Blueprint Engines PSLS4273CTF 427 ci engine is a custom-built engine that offers higher power output and greater customization potential, making it ideal for high-performance applications where maximum power and tuning flexibility are essential.

If you're looking for a reliable, factory-built engine with impressive power output and ease of availability, the GM LS3 6.2L engine is a solid choice. However, if you're seeking the highest power output and the ability to customize your engine to meet your specific needs, the Blueprint Engines PSLS4273CTF 427 ci engine is the way to go. Keep in mind that the installation and tuning process for a custom-built engine like the Blueprint Engines PSLS4273CTF 427 ci engine may be more complex and time-consuming compared to a factory-built engine.

Details:

Cam Specs:: Hydraulic Roller. Harmonic Balance. This engine requires a non-weighted flex plate/flywheel. Ignition Timing:: ECM Supplied with Calibration.

Not for use in pollution-controlled vehicles or dry sump applications. Wiring Harness. Timing Cover. Also Includes:: Drive by Wire Throttle Body.

Increased Deck Thickness and Strength Webbing. Customer return with miles or use. BluePrint Engines Forged Crank. BluePrint Engines Forged Pistons.

Block:: BluePrint Engines High Strength Cast Iron LSX Block. Compression Ratio: 11:1. Transmission Controller required. The Included LS controller package is for engine control only.

BluePrint Engines Hydraulic Roller Cam. Priority Main Oiling. Cylinder Heads:: BluePrint Aluminum Heads. Full warranty is still available through BluePrint Engines.

Horsepower Torque: 605 HP / 565 Ft. Extended Cylinder Skirt. Does not contain any transmission or body control. BluePrint Engines 427 CI Crate Engine, GM LS3 Compatible, 605 HP / 565 Ft Lbs. This particular engine made 628HP 580 Lbs. Not a brand new.

Improved Water Jacket Design. Spark Plug and Wires. BluePrint Engines recommends an air intake kit to ensure correct MAF calculations and Dino calibration are maintained with the provided ECU / tuning. Possibility of cosmetic defects that will not affect the function engine.

Valve Covers. Retro Fit Oil Pan. Internally Balanced Front and Rear. Rotating Assembly:: Forged Crankshaft.

Not Capable of Transmission Control.

part #: psls4273ctf prices

• $14349.00-$15878.99

specifications grokengines:

• for models: Ls3, 427, 580
• brand: Blueprint Engines
• mpn: Psls4273ctf
• type: Complete Assembly
• number of valves: 16
• engine size: 7 L
• country of origin: United States
• fuel type: Gasoline

returns grokEngines:

• policy: No Returns

payments grokEngines:

• other
• credit card: Mastercard
• wallet: Google-pay

seller grokEngines:

• # reviews: 922
• rating: 99.7%
• city: Kearney, Nebraska

offer grokEngines:

• sold: 0
• started: April 8, 2026
• availability: In Stock
• best offers: True
• quantity: 1
• options: Ship-to-home

general grokEngines:

• Car Truck Parts Accessories > Engines Engine Parts > Engines
• condition: New other see details

shipping grokEngines:

• type: Fixed
• cost: $0.00
• service: Flat Rate Freight
• class: Freight

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