"Buick Motors Div" from car manufacturer General Motors was involved in building aircraft engines during WWI.

-The US government ordered the production of 8,000   "Liberty" V8 engines, being these the first to receive that name. But only 15 engines of almost 400 hp were made (the V-8's initial power target was only 225 hp).

-It turned out that from the ordered quantity 5,000 units were to be built by Buick-Flint, and the rest (3,000) should be done by Willys-Overland. But the war ended and the just started production was aborted.

"Liberty-Buick"

-Throughout its history Buick has used different logos.

"Logos de Buick"

-In WWII Buick was also required to build Pratt & Whitney engines specifically the R-1830 and R-2000.

-They established a factory especially for certain machining operations and final assembly. At the end of 1944 they had already exceeded 60,000 built engines. And at the end of the war with Japan they returned to car manufacturing.

"Buick R-1830"

-More Information in file USNA 3023/452.8 from the years 1942 to 1945. Buick took part in building the J-65.

-As for car engines adapted for aviation, the favorites are the V-8s, which have been chosen by several transformers and amateurs who were dedicated to their adaptation.

"Buick adaptions"

From appendix 6: In Argentina, a certain Alejo Infante adapted a Buick 16 hp, 2605 cc. engine from 1904 to install it on a plane of that time.

"Air-cooled 2-cylinder Buick engine"

-Exhibited at the Automobile Museum of Polytechnic Institute of Rosario.

From appendix A4/6: .At the Combat Air Museum in Topeka, Kansas USA, there is a Buick turbojet engine exposed.

-It is a J-65-W-5F mentioned in the main text but without illustrations.

"Buick J-65 cut away"

From Appendix 10: We found an advertisement of the time from WWII that shows a radial engine manufactured by Buick.

-From the main page we know that they manufactured the R-1830 and R-2000, both in the amount of almost 75,000 engines.

"Buick flyer with the Liberators"

-During WWII and in the war effort, Buick made the Pratt and Whitney R-1830 and R-2000 under license. Originally Buick was a car builder.

“Buick's CEO next to one of its engines” (PiP)