History
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.
Read more about this topic: Pro Stock
Famous quotes containing the word history:
“Its a very delicate surgical operationto cut out the heart without killing the patient. The history of our country, however, is a very tough old patient, and well do the best we can.”
—Dudley Nichols, U.S. screenwriter. Jean Renoir. Sorel (Philip Merivale)
“The best history is but like the art of Rembrandt; it casts a vivid light on certain selected causes, on those which were best and greatest; it leaves all the rest in shadow and unseen.”
—Walter Bagehot (18261877)
“The history of a soldiers wound beguiles the pain of it.”
—Laurence Sterne (17131768)