Editing Buick V6 engine (section)

{{Infobox automobile engine
| name = Buick V6
| image = 3800II_L36.JPG
| caption = 3800 V6 Series I (L27) Engine in a 1995 Buick Regal
| manufacturer = {{ubl |[[General Motors]]|[[Kaiser Jeep]]|[[American Motors]]|}}
| aka = {{ubl |Fireball|Dauntless|3800}}
| production = 1961–2008
| turbocharger = In LD5 and special racing editions
| supercharger = [[Eaton Corporation|Eaton]] M62 or M90 (some versions)
| successor = {{ubl| [[General Motors High Value engine|GM High Value V6]] (Naturally Aspirated Applications)|[[General Motors High Feature engine|GM High Feature V6]] (Supercharged Applications)}}
| configuration = 90° [[V6 engine|V6]]
| block = [[Cast iron]]
| head = [[Cast iron]]
| valvetrain = [[Overhead valve engine|OHV]] 2 valves × cyl.
| displacement = {{ubl
  |{{cvt|2966|cc|CID L cc|1|adj=ri0|order=out}}
  |{{cvt|3216|cc|CID L cc|1|adj=ri0|order=out}}
  |{{cvt|3234.5|cc|CID L cc|1|adj=ri0|order=out}}
  |{{cvt|3340.7|cc|CID L cc|1|adj=ri0|order=out}}
  |{{cvt|3692|cc|CID L cc|1|adj=ri0|order=out}}
  |{{cvt|3791.3|cc|CID L cc|1|adj=ri0|order=out}}
  |{{cvt|4128|cc|CID L cc|1|adj=ri0|order=out}}
  }}
| bore = {{ubl| {{cvt|3.5|in|mm|1}}|{{cvt|3.625|in|mm}}|{{cvt|3.7|in|mm}}|{{cvt|3.75|in|mm|2}}|{{cvt|3.8|in|mm|1}}|{{cvt|3.965|in|mm}}}}
| stroke = {{ubl| {{cvt|2.66|in|mm|1}}|{{cvt|3.16|in|mm|1}}|{{cvt|3.1875|in|mm}}|{{cvt|3.4|in|mm|1}}}}
| compression = 8.0:1, 8.4:1, 8.5:1, 9.0:1, 9.4:1
| power = {{cvt|90|to|300|hp|0}}
| torque = {{cvt|145|to|280|lbft|0}}
| fueltype = [[Gasoline]]
| fuelsystem = [[Rochester Products Division|Rochester]] [[carburetor]]<br/>[[Multi-port fuel injection]]<br/>[[Sequential fuel injection]]
| oilsystem = [[Wet sump]]
| coolingsystem = [[Radiator (engine cooling)|Water-cooled]]
| weight = {{cvt|392|lb|0}} (Series II)
}}

The '''Buick V6''' is an [[Overhead valve engine|OHV]] [[V6 engine]] developed by the [[Buick]] division of [[General Motors Corporation|General Motors]] and first introduced in 1962. The engine was originally {{cvt|198|cuin|L|1}} and was marketed as the ''Fireball'' engine. GM continued to develop and refine the {{cvt|231|cuin|L|1}} V6, eventually and commonly referred to simply as the '''3800''', through numerous iterations.

The 3800 made the [[Ward's 10 Best Engines#20th century|Ward's 10 Best Engines of the 20th Century]] list and made Ward's yearly 10 Best list numerous times. It is one of the most-manufactured engines in automotive history, with over 25 million produced.{{cn|date=March 2023}}

The engine originally derived from Buick's {{cvt|215|cuin|L|1}} [[Buick V8 engine#215|aluminium V8]] family,{{cn|date=March 2023}} which also went on to become the [[Rover V8]], manufactured from 1960–2006.