BLUEPRINT ENGINES PSLS4271CT Ci Engine Gm

( Brand: Blueprint Engines ), ( Manufacturer Part Number: PSLS4271CT ), ( Part Type: Engine ), ( Number Of Valves: 16 ), ( Engine Size: 7 L ), ( California Prop 65 Warning: Yes ), ( Fuel Type: Gasoline ), ( Country Of Origin: United States )

Review BLUEPRINT ENGINES Ci Crate Engine Gm Compatible Replacement Upgrade fits LS3 427

The Blueprint Engines PSLS4271CT is a 427 ci (cubic inch) GM LS3 engine, designed for high-performance applications. This engine is a powerhouse under the hood, boasting an aluminum block and aluminum heads that contribute to its lightweight yet robust construction.

The LS3 engine features a 4.125-inch bore and a 4.000-inch stroke, resulting in a total displacement of 427 cubic inches. The engine's cylinder heads are CNC-ported for optimal airflow and combustion efficiency, while the intake manifold is also ported to accommodate 4150-style carburetors or fuel injection systems.

The Blueprint Engines PSLS4271CT is equipped with hydraulic roller lifters and a solid roller camshaft, delivering both power and reliability. The engine also includes a high-performance ignition system with a 6-degree advanced firing order, contributing to its impressive power output.

This engine comes with a balanced crankshaft and connecting rods, ensuring smooth operation even under heavy load. The engine's valvetrain includes double-roller timing chains and a hydraulic valve lash adjustment system for precise valve clearance and reliable performance.

The Blueprint Engines PSLS4271CT is designed to be easily adapted to various vehicle applications, with a variety of options for intake and exhaust systems. The engine includes a high-performance water pump, thermostat, and electric fan, ensuring efficient cooling even during high-stress driving situations.

This engine is built to the highest standards of quality and craftsmanship, with each component meticulously inspected and tested to ensure optimal performance. Whether you're building a hot rod, restoring a classic car, or simply looking to boost the power output of your daily driver, the Blueprint Engines PSLS4271CT is an excellent choice for anyone seeking a high-performance, reliable, and powerful engine.

The GM LS3 427 Ci engine, available through BluePrint Engines under the part number PSLS4271CT, is a high-performance aftermarket engine based on the original General Motors LS3 design. This engine is a popular choice among automotive enthusiasts and hot rod builders due to its power and reliability. Here are some pros and cons of buying this engine to help you make an informed decision:

1. Power: The LS3 engine delivers impressive power, with up to 430 horsepower and 424 lb-ft of torque. This makes it an excellent choice for high-performance applications, such as muscle cars, hot rods, and race cars.

2. Reliability: The LS3 engine is known for its durability and reliability, making it a popular choice for builders looking for a powerful and dependable engine. The engine uses modern technology, such as aluminum cylinder blocks and heads, to reduce weight and improve cooling.

3. Versatility: The LS3 engine is available in various configurations, including naturally aspirated, supercharged, and turbocharged versions. This allows builders to choose the configuration that best suits their specific application and performance goals.

4. Accessibility: The LS3 engine is a popular aftermarket engine, which means that there is a wide range of parts and accessories available for it. This makes it easier to find the components you need to build or modify your vehicle.

5. Easy to Install: The LS3 engine is designed to be a bolt-in replacement for many GM applications, making it an easy and straightforward installation process.

1. Cost: The LS3 engine is a high-performance engine, and as such, it comes with a higher price tag compared to stock engines. This may be a barrier for some builders on a budget.

2. Size: The LS3 engine is a large engine, which may require modifications to the vehicle's engine bay or suspension system to accommodate it.

3. Fuel Economy: The LS3 engine is not known for its fuel efficiency, which may be a concern for some builders looking to build a daily driver or a vehicle for long trips.

4. Emissions: The LS3 engine may not meet modern emissions standards, which may require additional modifications or aftermarket parts to bring it into compliance.

The BluePrint Engines PSLS4271CT LS3 427 Ci engine is a powerful and reliable high-performance aftermarket engine that offers impressive power, durability, and versatility. While it comes with a higher price tag, the LS3 engine's reliability, accessibility, and ease of installation make it a popular choice among automotive enthusiasts and hot rod builders. However, it may not be the best choice for builders on a budget, and the engine's size, fuel economy, and potential emissions issues should be carefully considered before making a purchase.

If you are looking for a powerful and reliable high-performance engine for your project, the BluePrint Engines PSLS4271CT LS3 427 Ci engine is an excellent choice. However, it is important to carefully consider the engine's cost, size, fuel economy, and potential emissions issues before making a purchase. If these factors are a concern, you may want to explore other engine options or consider building a less powerful but more fuel-efficient engine. Ultimately, the decision to purchase the LS3 engine depends on your specific application, performance goals, and budget.

Details:

Cam Specs:: Type: Roller. Aluminum Heads. Cylinder Heads:: BluePrint Aluminum Heads. Forged Pistons.

Notes:: This engine requires a non-weighted harmonic balance, and flex plate/flywheel. Hydraulic Roller Cam. Compression Ratio: 11:1. Also Includes:: Timing Cover.

Ignition Timing:: ECM Controlled NOT Included - Customer Must Reprogram. Rotating Assembly:: New Forged Crankshaft. 12-Month Parts-Only warranty. Internally Balanced.

They can also help with any questions about the limited warranty. Block:: OEM 7.0L Aluminum Block Machined in the USA. Not for use in pollution-controlled vehicles. Horsepower Torque: 625 / 565 FT LBS.

part #: psls4271ct prices

• $11655.00-$11999.00

specifications grokengines:

• for models: Ls3, 427
• brand: Blueprint Engines
• mpn: Psls4271ct
• part type: Engine
• number of valves: 16
• engine size: 7 L
• california prop 65 warning: Yes
• fuel type: Gasoline
• country of origin: United States

general grokEngines:

• Car Truck Parts Accessories > Engines Engine Parts > Engines
• condition: New

returns grokEngines:

• time: 30 Days
• policy: Returns Accepted
• paid by: Seller

payments grokEngines:

• other
• wallet: Apple-pay
• credit card: Visa

shipping grokEngines:

• type: Fixed
• cost: $0.00
• service: FedEx Ground / FedEx Home Delivery
• carrier: FedEx
• class: Standard
• transit: 4-9 Days

offer grokEngines:

• best offers: True
• availability: In Stock
• options: Ship-to-home
• started: April 2, 2026
• sold: 0
• quantity: 3

seller grokEngines:

• city: Kearney, Nebraska
• rating: 99.7%
• # reviews: 910

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