{{sources needed|date=December 2025}} {{Infobox racing car | Car_name = Penske PC-9<br /> Penske PC-9B | Image = Penske PC-9 Indy Car, built for Mario Andretti, 1980 - Collings Foundation - Massachusetts - DSC07041.jpg | Category = CART IndyCar | Constructor = Penske | Designer = Geoff Ferris | Predecessor = Penske PC-7 | Successor = Penske PC-10 | Team = Penske Racing | Drivers = Rick Mears<br /> Bobby Unser<br /> Mario Andretti<br /> Tom Gloy<br /> Bill Alsup | Technical ref = <!-- <ref name=tech>Insert formatted reference</ref> --> | Chassis = Aluminum Monocoque | Suspension = Inboard springs and Fox shocks front and rear, operated by top rocker arm with front and lower rear A arms of streamline tubing | Length = <!-- Use: {{convert|XXX|in|cm|1|abbr=on}} --> | Width = <!-- Use: {{convert|XXX|in|cm|1|abbr=on}} --> | Height = <!-- Use: {{convert|XXX|in|cm|1|abbr=on}} --> | Wheelbase = <!-- Use: {{convert|XXX|in|cm|1|abbr=on}} --> | Track = <!-- Use: {{convert|XXX|in|cm|1|abbr=on}} --> | Engine name = Cosworth DFX | Capacity = {{convert|2650|cc|cuin|1|abbr=on}} | Configuration = V8 80° | Turbo = | Engine position = Mid-engined, longitudinally mounted | Gearbox name= Hewland L.G.500<ref>{{cite web|url=http://www.hewlandclassic.com/assets/manuals/LG500_LG600.pdf|title=Hewland L.G.500 (4-Speed) and L.G.600 (5-Speed) Transaxle Gearbox|access-date=3 June 2022}}</ref> 4 speed | Type = manual | Weight = {{convert|1550|lb|kg|1|abbr=on}} | Fuel = Methanol, supplied by Mobil | Tyres = Goodyear Eagle Speedway Specials - Rear 27.0x14.5-15 - Front 25.5x10.0-15 }} thumb|1981 Indy 500-winning Penske PC-9B chassis of Bobby Unser [[File:Penske-Cosworth PC9B - Flickr - andrewbasterfield.jpg|thumb|Penske PC-9B being demonstrated at the 2011 Goodwood Festival of Speed]] The '''Penske PC-9''', '''Penske PC-9B''', and '''Penske PC-9C''' are USAC and CART open-wheel race car chassis, designed by British designer Geoff Ferris at Penske Racing, which was constructed for competition in the 1980 and 1981 IndyCar seasons, as well as the 1980 season and 1981–82 USAC Champ Car seasons. It also won the 1981 Indianapolis 500, being driven by Bobby Unser.<ref>{{Cite web |title=Penske Car Gallery |url=https://www.penskeautomall.com/cars-gallery/ |url-status=live |archive-url=https://web.archive.org/web/20240619165723/https://www.penskeautomall.com/cars-gallery/ |archive-date=2024-06-19 |access-date=2024-11-09 |website=Penske Automall}}</ref><ref>{{Cite web |title=Bobby Unser |url=https://www.indianapolismotorspeedway.com/history/people-of-ims/indianapolis-500-drivers/bobby-unser |url-status=dead |archive-url=https://web.archive.org/web/20220527215209/https://www.indianapolismotorspeedway.com/history/people-of-ims/indianapolis-500-drivers/bobby-unser |archive-date=27 May 2022 |website=www.indianapolismotorspeedway.com}}</ref><ref>{{Cite web |title=» The Gould Charge Penske PC9 |url=https://media.imsmuseum.org/thegouldchargepenskepc9/ |archive-url=https://web.archive.org/web/20230324021933/https://media.imsmuseum.org/thegouldchargepenskepc9/ |archive-date=2023-03-24 |access-date= |website=IMSM Media}}</ref><ref>{{Cite web |date=February 28, 2013 |title=Tony Matthews Cutaway: Penske PC9 |url=https://www.macsmotorcitygarage.com/tony-matthews-cutaway-penske-pc9/ |website=Mac's Motor City Garage}}</ref><ref>{{Cite web|url=https://www.ultimatecarpage.com/car/8088/Penske-PC9B-Cosworth.html|title=1981 Penske PC9B Cosworth - Images, Specifications and Information|website=Ultimatecarpage.com}}</ref><ref>{{Cite web|url=https://media.teampenske.com/teampenske/index.cfm?cid=17298|title=Penske Racing Media Site - Team Penske Media Guide|website=media.teampenske.com}}</ref><ref>{{Cite web|url=https://www.racingvintagecars.com/bobby-unser-and-the-indy-500-that-was-won-three-times/|title=Bobby Unser, and the Indy 500 that was Won Three Times|date=May 9, 2021}}</ref>
==References== {{Reflist}}
{{Penske Racing cars}}
Category:Racing cars Category:American Championship racing cars