LAST YEAR, a small, spidery, rear-engined Lotus-Ford surprised everyone by tagging second in the Indy 500. It was a simple case of instant success. This year, a number of car builders pushed their engines to the rear in hopes of catching the traditional front-engined winners.
The Speedway hasn’t seen a radical design revolution like this since 1924. That year, Harry Miller entered a front-wheel-drive car, and for the next several races, fwd speedsters dominated the winner’s circle.
Rear-engined cars, though, have always been rare at Indy. Only four were ever entered (1936-46) before the LotusFords came along, and none of these even qualified. Two, built for the Gulf Oil Company, each met tragic ends—a third, built by Lee Oldfield in 1937, had a rear-mounted V-16, but it wasn’t ready in…