Editing Overhead camshaft engine (section)

=== 1945–present ===
[[File:1948 Crosley COBRA engine OHC.jpg|right|thumb|upright=0.8 |1946–1949 [[Crosley#Crosley_CoBra_(1946–1949)|Crosley CoBra]] SOHC engine]]

The 1946–1948 [[Crosley#Crosley_CC_Four_(1946–1948)|Crosley CC Four]] was arguably the first American mass-produced car to use an SOHC engine.<ref name="Simanaitis">{{Cite journal|last=Simanaitis|first=Dennis|title= Tech Tidbits|journal= [[Road & Track]]|date= January 1994|page= 121|editor-last= Bryant|editor-first= Thos L.|publisher= Hachette Filipacchi Magazines|location= Newport Beach, CA US|volume= 45|issue= 6|issn= 0035-7189}}</ref><ref>{{cite web |url=https://crosleyautoclub.com/EngineTree/Crosley_Eng_Tree.html |title=Crosley Engine Family Tree - Taylor Years |website=www.crosleyautoclub.com |access-date=19 December 2019 }}</ref><ref>{{cite web |url=https://crosleyautoclub.com/EngineTree/Crosley_Eng_Tree-1.html|title=Crosley Engine Family Tree - CoBra Years |website=www.crosleyautoclub.com |access-date=19 December 2019 }}</ref> This small mass-production engine powered the winner of the 1950 [[12 Hours of Sebring#Overall winners|12 Hours of Sebring]].<ref name="Simanaitis"/>{{refpage|page=121}}

Use of a DOHC configuration gradually increased after World War II, beginning with sports cars. Iconic DOHC engines of this period include the 1948–1959 [[Lagonda straight-6 engine|Lagonda straight-six engine]], the 1949–1992 [[Jaguar XK engine|Jaguar XK]] straight-six engine and the 1954–1994 [[Alfa Romeo Twin Cam engine|Alfa Romeo Twin Cam]] inline-four engine.<ref name=EuropeanCarWeb.com>{{cite web |url=http://www.europeancarweb.com/features/0209ec_twin_cam_analysis/index.html|title=An Echo of the Past — the history and evolution of twin-cam engines|date=February 2009|access-date=29 August 2012 |website=www.EuropeanCarWeb.com|publisher=European Car Magazine, Source Interlink Media|url-status=dead|archive-url=https://web.archive.org/web/20120303061544/http://www.europeancarweb.com/features/0209ec_twin_cam_analysis/index.html|archive-date=3 March 2012}}</ref><ref>{{Cite web|url= http://www.alfisti.co.uk/boxerpage.htm|title= Technical- Boxer History|website= www.alfisti.co.uk|url-status= live|archive-url= https://web.archive.org/web/20130329040043/http://www.alfisti.co.uk/boxerpage.htm|archive-date= 29 March 2013}}</ref> The 1966-2000 [[Fiat Twin Cam engine|Fiat Twin Cam]] inline-four engine was one of the first DOHC engines to use a toothed timing belt instead of a timing chain.<ref>{{cite web|title=Old Fiat ad with Aurelio Lampredi|url=https://i.kinja-img.com/gawker-media/image/upload/19f9mk0fozzvppng.png |website=www.kinja-img.com |access-date=31 January 2015}}</ref>

In the 1980s, the need for increased performance while reducing fuel consumption and exhaust emissions saw increasing use of DOHC engines in mainstream vehicles, beginning with Japanese manufacturers.<ref name=EuropeanCarWeb.com/> By the mid-2000s, most automotive engines used a DOHC layout.{{citation needed|date=December 2020}}