The steering shaft is designed for restricted backward movement during a frontal crash. Under racing conditions, the pit crew uses a dry-break disconnect system. Pressurized or vacuum systems aren't allowed and fuel can't be cooled. Fines are heavy for any fuelling accidents. Engine The Olds-Aurora engine has a displacement is 3.5 liters.
All indy cars are limited to normally aspirated four-cycle overhead camshaft engines.
Strict regulations govern every aspect of the engine's materials and construction. It must have a neutral position. 6 forward speeds with a sequential shifter. The Dallara chassis is made of a cloth-like material of woven carbon fibers. Engineers determine how many layers are needed in each area and how they should align.