IRL engine specifications for 2003 - 2005.

A summary of the Indy Racing League engine specifications from 2003-2005, announced April 3. General Motors, Infiniti and Toyota each have committed to build engines to the new specifications through 2005.

Configuration: V8, 90 degree, normally aspirated
Displacement: 3.5 liters, with electronic rev limiter
Horsepower (est.): 650
Bore: 93 millimeters
Main bearing: 53 millimeters minimum
Rod bearing: 43 millimeters minimum
Deck height: 7.486 inches (190 mm) minimum
Center line of crank (to bottom of sump): 4 inches
Minimum weight: 295 pounds (no ballast, dry, less headers, clutch, ECU spark
box and filters)
Engine length: 22-22.5 inches
Mounting: Common engine/fuel pump mounting points
Injectors: Limited to two per cylinder
Cam drive: Chain or gear
Crankshaft: 180-degree flat crank
Air box: Common air box and filter
Cams, location Four, overhead
Valves per cylinder Four, maximum