Pro Stock, NHRA Lucas Oil Drag Racing, Atlanta Dragway, Commerce, Georgia, USA, North America
Watch Pro Stock drag racing in this video shared to Old Car Tv ( Author Description – Pro Stock Drag Racing is a class of drag racing featuring ‘Factory Hot-Rods’. The class can be known as “all motor,” as the cars cannot use artificial induction such as turbocharging, supercharging, or nitrous oxide, and there are very strict rules governing the modifications allowed to the engines, and the types of bodies used. The National Hot Rod Association Pro Stock class emerged from the production-based Super Stock class in 1970 with a more liberal set of rules and an absence of handicaps. Rules initially favored big-block V8s but by 1972 had changed to favor small-blocks to reflect contemporary trends in the American auto industry. In 1982, the NHRA implemented a new engine formula that allowed the big-blocks to return, due to the popularity of the Mountain Motor IHRA Pro Stocks with unlimited displacement in the late 1970s. However, NHRA still limits the size of the engine to no more than 500 cubic inches(about 8,194 cubic centimetres) in displacement. The 1972-81 small-block formula (358 cubic inches – about 5,867 cubic centimetres) would reappear from 1998 until 2001 in the Pro Stock Truck class that used compact pickup truck bodies instead of sedan bodies. The rules that forbid forced induction of any sort, plus allowing head modifications have resulted in Pro Stock heads being the most sophisticated in any drag racing category, with valve lifts in the 1″ region. Pro Stock engines generally produce around 2.5 hp/in³ (114 kW/L). A complete Pro Stock engine normally costs more than $80,000. ) Thanks to the creators of this video and for sharing. Please leave a comment about how you would review this Pro Stock drag race video.