The first version was the LP400 (pictured below) it had a 4 liter V12 engine with six 45MM Weber DCOE side-draft carburetors that made 375 horsepower at 8,000 RPM, built between 1974-1977 this car coined the phrase "exotic car" 157 cars produced. 

In 1978 Lamborghini introduced the "S" version of the Countach. Retaining the 4 liter 375 horsepower engine it added wheel arches to properly house the new Pirelli P7 tires along with a rear wing option that gave the Countach its most aggressive look yet. The "S" version was made in III different variants: 

Series I cars (pictured below) built from 1978-1979 had LP400 instruments for the first 27 cars and Bravo wheels, 50 cars produced.

Series II cars 1980-1981 (pictured below) had the new Jaeger gauges that began in 79' with the later Series I cars and smooth 5 hole wheels, 105 cars produced. 

Series III cars built from 1981-1982 (pictured below) began the new larger interior "5000S" style body and raised suspension height. While still retaining the 4 liter engine, the Weber DCOE's were made smaller to 40MM for export, the result was a horsepower decrease from 375 to 353 at 8,000 RPM, 82 cars produced. 

In 1982 the new 5000S was introduced (pictured below) built from 1982-1985. Displacement was raised to 5 liters with 45MM Weber DCOE's horsepower returned to 375 but came on sooner at 7,500 RPM, 321 cars produced. 

 In 1985 Lamborghini introduced the 5000 Quattrovalve (pictured below) from 1985-1988 these cars produced 455 horsepower at 7,500 RPM with six 44MM Weber DCNF down-draft carburetors, and 420 horsepower in fuel injected form. 610 cars produced. 

In 1988 Lamborghini celebrated its 25th anniversary, with a special body treatment for the Countach. Built from 1988-1990 the new "Anniversary Countach"(pictured below) was the final version of the Countach, 657 cars produced. 

THE CANNONBALL COUNTACH IS 1 OF THE 105 SERIES II CARS