PROSTOCK MATCH RACES~WARREN JOHNSON VS LARRY MORGAN AT 2014 CORDOVA WORLD SERIES OF DRAG RACING
Back again this year Warren Johnson takes on Larry Morgan and wins the Prostock Title at Cordova Dragway Park 61st Annual World Series of Drag Racing 2014. First matchup Warren takes the light with a firstname.lastname@example.org as Larry runs email@example.com. Final pass changing lanes Warren wins again with a firstname.lastname@example.org as Larry runs email@example.com
Inside the Transmission of an NHRA Pro-Stock
Gray Motorsports gives a quick run down on the Liberty 5speed found in their ProStock cars, via Team Valvoline. Check out TeamValvoline.com for more great content.
Mountain Motor Nationals at MIR Pro Mod & Extreme Pro Stock
www.Facebook.com/TheRacingVids www.Facebook.com/TheRacingVids Mountain Motor Nationals at MIR Pro Mod & Extreme Pro Stock
New England Nationals Pro Stock Rd.2 Qualifying 2014
Engine dual 4-barrel carburetors on a "tunnel ram" intake manifoldThe engine must be manufactured by the same company as the car body. Though no engine currently being raced in Pro Stock is used on any manufacturer's assembly line, all of the raw components are available to anyone. Engine blocks and cylinder heads are often provided in a "raw" condition with only approximate dimensions and rough machining. Each team will continue to machine and modify the part to their own standards. NHRA Pro Stock engines are restricted to a maximum 500 cu in (8.2 L) single-camshaft, 90-degree V8. Some non-NHRA bodies will have different rules. The American Drag Racing League (eighth-mile) and Mountain Motor Pro Stock Association (quarter-mile) do not have a 500-cubic inch rule, and some engines exceed 800 cu in (13.1 L), known as "mountain motors." Pro stocks are limited to dual 4-barrel carburetor (naturally aspirated) intake systems. The four-barrel carburetors can be "split" (i.e. sawn in half)(but not in NHRA Pro- Stock) so that each of the halves can be more accurately positioned over the slightly staggered intake runners. The intake manifold and heads are open to modification. The most effective intake manifold configuration has continued to be the "tunnel ram" for nearly 40 years. The carburetors are raised above the engine; the length and configuration of the intake passages ("runners") is critical to horsepower output. The tall intake manifolds necessitate the large hood scoop that is a signature of the Pro Stock class. 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 NHRA Pro Stock engine costs more than $250,000. Drivetrain Pro Stock clutches utilize multiple discs. These must be serviced after every run to maintain critical tolerances that can mean the difference between a good run or severe tire shake. Since 1973, the most popular transmission was the Lenco planetary design, first used as a four-speed and now as a five-speed. Although the five-speed unit (usually air-shifted) is still used in ADRL and Mountain Motor Pro Stock Association and in Air-Shifted three-speed units in Pro Modified, NHRA Pro Stocks utilize a Liberty or G-Force five-speed clutchless manual transmission. Body NHRA Pro Stock racers use NHRA approved carbon fiber bodies. Windows are manufactured from polycarbonate. Some have complained that the "Stock" portion of "Pro Stock" is not really all that accurate anymore, because so little, if any, of the race cars' bodies having their origins in the respective manufacturers' factories. The factory hot rods may use only racing fuel (octane rating: 118), which is tested and certified by chemical analysis at NHRA, IHRA, or PDRA events. Starting in 2015, the NHRA will only permit stock Sunoco racing fuel. It is unknown if Sunoco will mandate unleaded racing fuels as they are in other classes of motorsport where they are official fuel, or allow alcohol in the official NHRA fuel. Pro Stock fuel systems flow the gasoline at 7.5 US gallons per minute (0.5 L/s). In addition to all of these specifications, each car must: Weigh a minimum of 2,350 pounds (1,066 kg), including driver. In NHRA competition, the cars must be produced within the last five model years (2008--2012). In the late 1980s and into the 1990s, car sizes increased as mid-size family sedans had become the car of choice, but cars shrank by the 2000s (decade) as compact cars, banking off the popularity then of the sport compact class, became the trend, as General Motors and Daimler (then owning the Dodge brand) began using compact cars (similar to Pro RWD except for the engine). However, that the push back to pony cars and mid-size family sedans became the choice again, as Ford uses a "pony car" and Dodge and Chevrolet began using mid-size family sedans. The 2013 legal cars are the Chevrolet Camaro, Dodge Avenger, and Ford Mustang. For 2014, Fiat teams are transitioning to the Dodge Dart. Rear spoilers cannot be longer than 13 inches (330 mm), measured from the body-line-to-spoiler transition point to the tip. Complete stock headlights, parking lights and taillights must be retained in the original factory location. This makes for some incredibly tight racing; the front runners in the class can reach speeds over 215 miles per hour (343 km/h) in 6.46 seconds may be only .05 seconds.