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Buick 350 Engine for Sale: Complete Buyer’s Guide
If you’re a classic car enthusiast or a restorer looking for a reliable American V8 engine, the Buick 350 engine is a fantastic option. Known for its durability, smooth performance, and distinct design features, this engine remains a sought-after choice among muscle car aficionados and vintage collectors.
Table of Contents
- Introduction
- History of the Buick 350 Engine
- Buick 350 Engine Specifications
- Buick 350 vs Chevy 350
- Popular Buick Models Featuring the 350
- Reasons to Buy a Buick 350 Engine
- Where to Find Buick 350 Engines for Sale
- What to Look for in a Used Buick 350 Engine
- Buick 350 Engine Rebuild Kits
- Price Range of a Buick 350 Engine
- Installation Tips and Considerations
- Performance Upgrades for the Buick 350
- Maintaining Your Buick 350 Engine
- Common Problems and Fixes
- Tips for Selling a Buick 350 Engine
- Top Online Platforms to Buy Buick 350 Engines
- Buick Enthusiast Communities and Forums
- Conclusion
- FAQs
1. Introduction
If you’re a classic car enthusiast or a restorer looking for a reliable American V8 engine, the Buick 350 engine is a fantastic option. Known for its durability, smooth performance, and distinct design features, this engine remains a sought-after choice among muscle car aficionados and vintage collectors.
Whether you’re restoring a Buick Skylark, a Buick GS, or working on a custom project, finding a Buick 350 engine for sale can be a crucial part of your automotive journey.
2. History of the Buick 350 Engine
The Buick 350 V8 engine was first introduced in 1968 and continued production until 1980. It was Buick’s response to the rising demand for more powerful and efficient engines during the muscle car era. Unlike the more common Chevy 350, the Buick 350 had unique engineering characteristics that made it a standout.
Key Historical Highlights:
- Introduced in 1968 to replace the 340 cu in engine
- Featured in iconic models like the Buick GS 350 and Skylark
- Known for a longer stroke and higher torque
- Produced in both 2-barrel and 4-barrel carburetor variants
- Last appeared in passenger cars in 1980
3. Buick 350 Engine Specifications
Here are the typical technical specifications of a stock Buick 350 engine:
| Specification | Details |
|---|---|
| Engine Type | V8 |
| Displacement | 350 cu in (5.7 L) |
| Bore x Stroke | 3.80″ x 3.85″ |
| Compression Ratio | 8.5:1 to 10.25:1 (varied by year) |
| Horsepower | 230 – 285 hp |
| Torque | 350 – 375 lb-ft |
| Fuel System | 2-barrel / 4-barrel carburetor |
| Firing Order | 1-8-4-3-6-5-7-2 |
| Block Material | Cast Iron |
| Head Material | Cast Iron |
4. Buick 350 vs Chevy 350
Although both engines share the “350” label, the Buick 350 and Chevy 350 are completely different in design and parts compatibility.
| Feature | Buick 350 | Chevy 350 |
|---|---|---|
| Engine Design | Buick-specific | Small-block Chevy |
| Weight | Lighter | Heavier |
| Stroke | Longer (3.85″) | Shorter (3.48″) |
| Parts Interchange | Minimal with others | Highly interchangeable |
| Intake Design | 10 bolt, narrow | 12 bolt, wider |
The Buick 350 is ideal for those who want a unique engine build and value torque over horsepower.
5. Popular Buick Models Featuring the 350
Several Buick models came equipped with the 350 engine during the late 60s and 70s:
- Buick Skylark (1968–1975)
- Buick GS 350 (1968–1972)
- Buick LeSabre (1970s)
- Buick Regal (1973–1977)
- Buick Century (1970s)
These models used both the 2-barrel and 4-barrel versions of the engine.
6. Reasons to Buy a Buick 350 Engine
✅ Durable Cast Iron Block
The Buick 350 is known for its reliability and robust design.
✅ High Torque at Low RPM
Perfect for muscle cars, hot rods, and even off-road trucks.
✅ Unique and Rare
Stand out at car shows with a non-Chevy engine build.
✅ Smooth Performance
Its long stroke offers a smooth power delivery ideal for cruising.
7. Where to Find Buick 350 Engines for Sale
You can find Buick 350 engines for sale through several online and offline sources:
🔧 Online Marketplaces
- eBay Motors
- Facebook Marketplace
- Craigslist
- Summit Racing (for crate/rebuilt options)
- JEGS High Performance
🏢 Engine Rebuilders & Junkyards
- Local salvage yards and auto recyclers
- Remanufacturing shops offering rebuilt engines
- Classic car swap meets and auctions
8. What to Look for in a Used Buick 350 Engine
When purchasing a used engine, always check:
- Compression test results
- Oil leaks or cracks in the block or heads
- Casting numbers for authenticity
- Mileage and previous maintenance records
- Compatibility with your project (mounts, manifolds, etc.)
9. Buick 350 Engine Rebuild Kits
If you’re planning to restore or rebuild a used engine, consider these components:
- Pistons and rings
- Rod and main bearings
- Gaskets and seals
- Timing set
- Camshaft and lifters
- Oil pump
- Freeze plugs
Brands like Sealed Power, Enginetech, and COMP Cams offer high-quality kits.
10. Price Range of a Buick 350 Engine
Pricing depends on condition, location, and whether it’s stock, rebuilt, or performance-enhanced:
| Engine Type | Price Range (USD) |
|---|---|
| Used (core condition) | $300 – $800 |
| Running used engine | $900 – $1,500 |
| Rebuilt engine | $1,500 – $3,000 |
| Performance builds | $3,000 – $6,000+ |
Shipping costs may range from $200 to $600 depending on weight and distance.
11. Installation Tips and Considerations
- Ensure engine mounts and transmission bolt patterns are compatible
- Replace the rear main seal, gaskets, and timing chain during install
- Clean and inspect the cooling system and radiator
- Consider upgrading the carburetor or ignition system
12. Performance Upgrades for the Buick 350
Want more power? Here are popular upgrades:
- High-lift performance camshafts
- Aluminum intake manifolds
- Headers for improved exhaust flow
- High-flow cylinder heads
- HEI distributor and ignition upgrades
- 4-barrel carburetor conversions
- Forced induction (turbo or supercharger – custom builds)
13. Maintaining Your Buick 350 Engine
Basic maintenance can extend your engine’s lifespan:
- Use high-zinc engine oil for flat tappet cams
- Keep the cooling system flushed
- Regularly change oil and filter
- Tune up the carburetor and ignition periodically
- Monitor for vacuum leaks and exhaust gasket leaks
14. Common Problems and Fixes
| Issue | Common Fix |
|---|---|
| Oil Leaks | Replace valve cover and oil pan gaskets |
| Overheating | Check thermostat and radiator |
| Ticking Noise | Inspect lifters or rocker arms |
| Low Oil Pressure | Replace oil pump or bearings |
| Hard Starting | Tune ignition system and carburetor |
15. Tips for Selling a Buick 350 Engine
Planning to sell? Maximize your return by:
- Providing detailed photos
- Listing compression test results
- Including casting numbers and part details
- Highlighting any rebuilt components
- Offering local pickup or shipping assistance
16. Top Online Platforms to Buy Buick 350 Engines
| Platform | Features |
|---|---|
| eBay Motors | Wide selection, buyer protection |
| Facebook Marketplace | Local deals, fast negotiation |
| JEGS & Summit | Trusted rebuild and crate engine sellers |
| Car-Part.com | Used engine locator across junkyards |
| Buick Forums | Enthusiast-driven classifieds |
17. Buick Enthusiast Communities and Forums
Join these to get advice, buy/sell parts, and share experiences:
- V8Buick.com
- ClassicBuicks.com
- Buick Performance Group (Facebook)
- Hemmings Muscle Machines Forum
- Reddit /r/ClassicCars
18. Conclusion
The Buick 350 engine is a powerful, reliable, and distinctive choice for those restoring or upgrading a classic American vehicle. Its unique characteristics set it apart from more common GM small-blocks, and with the right care or performance upgrades, it can be the heart of a show-winning build.
Whether you’re buying a used block, a rebuilt unit, or starting from scratch with a rebuild kit, make sure to purchase from reputable sources and thoroughly inspect the engine.
19. Frequently Asked Questions (FAQs)
❓Is the Buick 350 the same as the Chevy 350?
No, the Buick 350 is a unique engine with different dimensions, parts, and architecture from the Chevy 350.
❓Can I use Chevy 350 parts on a Buick 350?
Most parts are not interchangeable, including intakes, heads, and camshafts. Stick with Buick-specific components.
❓What’s the horsepower of a Buick 350 engine?
Horsepower ranged from 230 to 285 hp, depending on the year and whether it had a 2-barrel or 4-barrel carb.
❓How heavy is a Buick 350 engine?
Approximately 450 to 500 lbs, depending on accessories and manifolds.
❓Is the Buick 350 a good engine?
Yes, it’s known for its torque, durability, and smooth operation. Great for street cruisers and restomods.
❓What vehicles did the Buick 350 come in?
Models like the Skylark, GS 350, Regal, and LeSabre from 1968 to 1980.
❓Where can I buy a Buick 350 engine today?
Look at eBay, Craigslist, Facebook Marketplace, Car-Part.com, and Buick-specific forums.
❓Can I rebuild a Buick 350 myself?
Yes, with the proper tools, a rebuild kit, and mechanical knowledge, it’s a feasible DIY project.
