International Formula 3000

Initially, the Cosworth DFV was a popular choice, having been made obsolete in Formula One by the adoption of 1.5 litre turbocharged engines.

The first chassis from March, Automobiles Gonfaronnaises Sportives (AGS) and Ralt were developments of their existing 1984 Formula Two designs, although Lola's entry was based on and looked very much like an Indy car.

A few smaller teams tried obsolete three-litre Formula One cars (from Tyrrell, Williams, Minardi, Arrows and RAM), with little success—the Grand Prix and Indycar-derived entries were too unwieldy as their fuel tanks were about twice the size of those needed for F3000 races, and the weight distribution was not ideal.

In 1991, some Italian teams started using Agip's so-called "jungle juice" Formula One fuel, worth an estimated 15 bhp, giving their drivers a significant advantage.

Formula 3000 races during the "open chassis" era tended to be of about 100–120 miles in distance, held at major circuits, either headlining meetings or paired with other international events.

The "jewel in the crown" of the F3000 season was traditionally the Pau Grand Prix street race, rivalled for a few years by the Birmingham round.

The series grew dramatically through the late nineties, reaching an entry of nearly 40 cars - although this in itself was problematic as it meant many drivers failed to qualify.

[33] Montoya and Bourdais became Champions in North American open-wheel (CART and Champ Car) respectively, with Fittipaldi, Moreno, Junqueira and Wilson also becoming race winners, and Danner and Wirdheim making the ranks.

Sospiri attempted to qualify for one Formula One race but failed to make it, as part of the disastrous MasterCard Lola team.

Sweden's Björn Wirdheim won the 2003 FIA Formula 3000 International Championship for Drivers