350 engine

Buick 350 Engine for Sale – Classic V8 Performance and Compatibility

If you are looking for a Buick 350 engine for sale, the Buick 350 V8 is a classic American engine worth considering for a vintage Buick restoration, replacement project, or traditional V8 build. Known for its Buick-specific engine architecture, 350-cubic-inch displacement, and strong low-speed torque characteristics, this engine has remained a popular choice among classic-car enthusiasts.

The Buick 350 is a 5.7-liter V8 engine produced for several Buick passenger-car applications. Although it shares its displacement with other GM 350 engines, it is a distinct Buick-designed engine and should not be confused with the Chevrolet 350 Small Block or Oldsmobile 350.

Whether you need a complete running engine, a rebuildable core, or a replacement for an existing Buick V8, understanding the engine specifications and compatibility requirements is important before purchasing.

Specifications are based on documented Buick 350 engine configurations. Individual replacement engines may have different internal components, carburetors, compression ratios, and performance ratings.

Compatibility / Fitment Notes

Compatibility is one of the most important considerations when purchasing a Buick 350 engine for sale. Although the engine was installed in several Buick models, not every Buick 350 assembly is automatically interchangeable without modifications.

The engine was originally designed for specific Buick vehicle platforms and drivetrain configurations. Buyers should verify the engine's year, block identification, mounting arrangement, transmission compatibility, and accessory configuration before ordering.

Buick 350 Compatible Vehicle Applications

The Buick 350 V8 was factory-installed in several vehicles, including:

Some Jeep applications used the Buick 350 under the Dauntless V8 name. These are original application references, not a guarantee that every donor engine will be a direct replacement for every vehicle in the listed range.

Important Fitment Considerations

Before purchasing, check the following:

• Engine mounts: Confirm that the block mounting points and vehicle-side engine mounts match your chassis.

• Transmission compatibility: Verify bellhousing pattern, flexplate or flywheel requirements, crankshaft configuration, and transmission application.

• Oil pan clearance: Check oil pan shape and clearance against the vehicle's crossmember and chassis.

• Exhaust compatibility: Confirm exhaust manifold or header clearance.

• Cooling system: Check water pump, radiator hose connections, and accessory drive configuration.

• Electrical components: Verify distributor, ignition system, alternator, starter, and wiring compatibility.

• Accessory brackets: Compare power steering, air conditioning, and alternator mounting arrangements.

Important: The Buick 350 is not a Chevrolet 350 Small Block. Both engines have approximately the same displacement, but they use different engine designs and should not be assumed to share mounting points, cylinder heads, internal components, or accessories.

Engine Configuration

The Buick 350 is a naturally aspirated, 90-degree V8 gasoline engine with eight cylinders arranged in two banks of four.

Its overhead-valve design uses pushrods and rocker arms to operate the valves. The engine features a cast-iron block and Buick-specific internal architecture.

Unlike some other GM 350 engines, the Buick version has a distinctive deep-skirt block design and front-mounted distributor arrangement.

Buyers looking for an original-style replacement should confirm that the engine is a genuine Buick 350 rather than a Chevrolet, Oldsmobile, or Pontiac 350.

Engine Displacement

The Buick 350 has a displacement of approximately:

• 350 cubic inches (CID)

• 5.7 liters

• 5,724 cc

Its factory bore measures 3.800 inches, while its stroke measures 3.850 inches.

The relatively long stroke contributes to the engine's torque-oriented operating characteristics, making it suitable for traditional street applications and classic Buick restoration projects.

Fuel Type

The Buick 350 was designed to operate on gasoline.

Original factory configurations included different carburetor and compression-ratio combinations. Depending on the model year and engine specification, buyers may encounter two-barrel or four-barrel carbureted versions.

When purchasing a used or rebuilt Buick 350, confirm the fuel delivery setup and the fuel requirements of the particular engine.

Aspiration / Induction

The original Buick 350 uses naturally aspirated induction.

Air enters through the carburetor and intake manifold before reaching the cylinders, where it mixes with gasoline for combustion.

Factory configurations included:

• Rochester-style two-barrel carburetor applications.

• Four-barrel carburetor applications.

• Different intake manifold and compression configurations depending on production year.

The original carbureted setup makes the engine relevant to buyers restoring classic Buick vehicles and maintaining period-correct engine configurations.

Power Output

The Buick 350's horsepower rating depends on the production year, carburetor configuration, compression ratio, and factory engine specification.

For example, the 1968 Buick specifications documented a 230-horsepower two-barrel configuration, while higher-output four-barrel versions were also available.

When comparing engines for sale, do not rely on a single horsepower figure for every Buick 350. Also distinguish original SAE gross horsepower ratings from later SAE net ratings, as they are not directly comparable.

Torque

Torque is an important characteristic of the Buick 350 V8.

The 1968 factory specifications list:

• 350 lb-ft of torque for a two-barrel version.

• 375 lb-ft of torque for an optional four-barrel version.

These are specific early-production figures, not universal ratings for all Buick 350 engines.

The engine's torque-oriented design makes it a practical candidate for classic-car driving, original Buick restoration, and suitable replacement applications.

Years / Generation

The Buick 350 V8 was produced from 1968 through 1980.

It replaced Buick's earlier 300- and 340-cubic-inch small-block V8 applications and became an important engine option across several Buick passenger-car ranges.

Its production history can be broadly understood in three periods:

• 1968–1970: Early production models, including higher-compression and performance-oriented carbureted configurations.

• 1971–1975: Changing emissions requirements and fuel specifications influenced engine tuning and power ratings.

• 1976–1980: Later production applications continued in selected Buick full-size and intermediate vehicles.

When buying an engine, verify the actual production year and engine identification code rather than relying only on the vehicle's advertised model year.

What to Check Before Buying a Buick 350 Engine

If you are planning to purchase a Buick 350 engine, inspecting its condition and verifying its specifications can help you avoid expensive compatibility problems.

Consider these factors before completing your purchase:

1. Engine identification: Confirm that the engine is an original Buick 350 V8 and check its identification numbers.

2. Engine condition: Establish whether it is a running engine, rebuilt engine, or used engine core.

3. Internal condition: Ask about cylinder compression, crankshaft condition, bearing condition, and cylinder-wall wear.

4. Engine completeness: Determine whether the engine includes the intake manifold, carburetor, distributor, exhaust manifolds, alternator, and other accessories.

5. Rebuild history: If the engine has been rebuilt, request documentation of the work and replacement components.

6. Vehicle compatibility: Provide the buyer's vehicle make, model, year, and transmission information to confirm fitment.

7. Shipping arrangements: Confirm engine weight, packaging, shipping method, delivery costs, and return conditions before ordering.

Find the Right Buick 350 Engine for Your Vehicle

Searching for a Buick 350 engine for sale requires more than finding an engine with the correct displacement. The engine's production year, configuration, identification code, and original vehicle application all matter when selecting a suitable replacement.

Whether you are restoring a Buick Skylark, Century, Regal, LeSabre, Electra, or another compatible classic vehicle, choosing the correct Buick 350 engine can help maintain the vehicle's original mechanical character.

Before placing an order, compare the available engine specifications with your existing engine and confirm all important fitment requirements.

Looking to buy a Buick 350 V8 engine? Contact your engine supplier with your vehicle details and preferred engine condition to request availability, pricing, and shipping information.

The Buick 350 V8 was factory-installed in several vehicles, including:

Here are the main technical specifications buyers should understand when searching for a Buick 350 replacement engine.

Compatibility is one of the most important considerations when purchasing a Buick 350 engine for sale. Although the engine was installed in several Buick models, not every Buick 350 assembly is automatically interchangeable without modifications.

The engine was originally designed for specific Buick vehicle platforms and drivetrain configurations. Buyers should verify the engine's year, block identification, mounting arrangement, transmission compatibility, and accessory configuration before ordering.

Buick 350 Compatible Vehicle Applications

The Buick 350 V8 was factory-installed in several vehicles, including:

Some Jeep applications used the Buick 350 under the Dauntless V8 name. These are original application references, not a guarantee that every donor engine will be a direct replacement for every vehicle in the listed range.