Without looking, I'm pretty sure the Cosworth DFX went back to about 1967 in its original configuration. I know Ford had nothing to do with it being brough to Indy racing, that was Parnelli that got the ball rolling. But hey, I don't know my history.
The simple point to all this is, when manufacturers come to play, the independents might eek out a win or two, but those wins will be far enough between them, that there will be no great rush to take on the manufacturers, even if engine leases and badging does not exist.
It was the 60's the last time Ford had anything to do with developing an IndyCar engine.
Ford never had anything to do with the development of any Cosworth engine. They just paid to put their name on it.
That's the problem with your whole premise. If you look at the history of Manufacturers developing engines in Indy Car, you do have the engines from TRD and HPD, but you also have the original Buick V6(developed by Buick engineers), the Olds Aurora(developed by GM engineers), and the 1960's FORD V8(developed by FORD engineers). Those are the products you get when the manufacturers come to play.
Well following that logic, Chevy has always had Ilmor slap Bow Tie's on a motor they did not develop...Ford never had anything to do with the development of any Cosworth engine. They just paid to put their name on it.
"They're gonna have to put my ugly face on that trophy now!" -Tony Kanaan IMS, May 26, 2013
Race CARS Not DOGS!!! Adopt or foster a retired greyhound -Me
Will Jay Penske, Dragon Racing, run a Lotus in this year's Indy 500?
Will any other teams assume "The Lotus Position" ? Sitting cross legged in meditation, waiting for a Honda or Chevy to materialize.
The Cosworth engine was designed before Ford wrote the check to badge it, just like the Ilmor was designed before Chevy paid to badge it.
Two of Cosworth's engineers left and started Ilmor, and designed an engine to beat the 25 year old Cosworth that everyone was running. Cosworth got back on their feet, and designed the all new XB to compete with the Ilmor.
Neither engine had any input from the manufacturers, and the badging money came after the engines were designed.
It does not look like he is wrong.
In 1966, Colin Chapman (Lotus Cars founder and principal of Team Lotus) persuaded Ford to bankroll Keith Duckworth's design for a new lightweight 3,000 cubic centimetres (183.1 cu in) Formula One engine. Cosworth received the order along with the £100,000 that Ford felt it adequate to spend on such an objective. The contract stipulated that a four-cylinder Ford-based F2 engine would be developed as proof of concept (see the FVA above) and that a pure Cosworth V8 would be built based on this.
Founded as an independent British engine manufacturer in 1983, it started building engines for Indycars with the money of team owner and chassis manufacturer Roger Penske. The Ilmor-Chevrolet 265A debuted at the 1986 Indianapolis 500 with Team Penske driver Al Unser. In 1987, the engine program expanded to all three Team Penske drivers (Rick Mears, Danny Sullivan, and Unser), Patrick Racing, and Newman/Haas Racing. Mario Andretti, driving for Newman/Haas, won the Long Beach Grand Prix, the engine's first IndyCar victory. He also won the pole position for the 1987 Indianapolis 500. A year later, the engine was rebadged as the Chevy Indy V-8, and Rick Mears won the 1988 Indianapolis 500, the engine's first win at Indy. The engine went on to have a stellar record in CART. From 1987 to 1991, the engine won 64 of 78 races.
Get your head out of your past!!!