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Top Doorslammer is a professional (Pro) class of Australiandrag racing. It caters to full-bodied racing sedans which are replicas of Australian or US production vehicles. The class uses 514 cu. in. displacement (8.5-litre), mechanicallysuperchargedV8engines which are fueled bymethanol. The minimum weight break for these vehicles is 2700 lbs (1225 kg). It is similar to thePro Modified class as defined by theNHRA.

Top Doorslammer is regulated byANDRA, and is considered a Group 1 or professional category. It is the fastest sedan based category in the world, using replicas of front-engined production sedans, coupes, station wagon and utility vehicles usually produced byHolden,Ford,Dodge,Studebaker andChevrolet. As its name suggests, these cars have operationaldoors, thereforeFunny Car style bodies are not allowed in this class.

Some notable drivers competing in this category areJohn Zappia, Peter Kapiris, Lance Larcombe,Victor Bray,Ben Bray,Gary Phillips, andMaurice Fabietti. During the summer months, because of rules similar to Pro Modified, such stars in the United States frequently appear during the North American winter during theInternational Hot Rod Association 400 Thunder series currently. For example, during the 2017-18 IHRA season, Texan Frankie "Mad Man" Taylor drove a second Bray Racing car when the drag strips closed for the winter.

Top Doorslammer originally started out as an exhibition class calledWild Bunch with notable pioneers John Zappia and Victor Bray. After a number of successful years of running the class, ANDRA recognised the class worthy of a professional bracket. By 1996 Top Doorslammer was officially recognised as a Group 1 class, and has since grown into one of the most successful brackets.

Top Doorslammer Championship is onSBS Speedweek and the new SPEED Channel on Foxtel.

Round 1: Fuchs Australian nationals 10–12 September, Sydney Dragway, NSW
Runner Up: Maurice FabiettiWinner: Robin Judd

Round 2: Goldenstate Titles 3–4 Dec,Perth Motorplex, WA
Runner up: John ZappiaWinner:Mark Belleri

Round 3: 40thWesternationals 5–6 March,Perth Motorplex, WA
Runner up: Maurice Fabietti Winner:John Zappia

Round 4: ANDRA Pro Series 18–19 March, Sydney Dragway, NSW
"RAIN OUT"

Round 5: 2011 Nitro Champs 29 April – 1 May, Sydney Dragway, NSW
Runner up:Peter KapirisWinner:John Zappia

Round 6:

Round 7: 2011 Castrol EDGE WinternationalsWillowbank Raceway, QLD RAIN OUT FINAL Finalist:Mark Belleri and Peter Kapiris

Round 1: 2011 Fuchs Australian nationals 9–11 September, Sydney Drag way, NSWWINNER: Peter Kapiris

Round 2: 2011 40th Annual Goldenstate Titles 18–19 November,Perth Motorplex, WA
WINNER: Peter Kapiris

Round 3: 2012 41stWesternationals 3–4 March,Perth Motorplex, WA
WINNER: John Zappia

Round 4: 23–24 March, Sydney Dragway, NSWWINNER: John Zappia

Round 5: 2012 Nitro Champs, 4–6 May, Sydney Dragway, NSWWINNER: John Zappia

Round 6: 2012 45th FUCHS Winternationals 8–11 JuneWillowbank Raceway, QLD

Points Allocation

Winner- 100

Runner up- 80

Semi Final lose- 60

Quarter Final Lose- 40

Non Qualifier- 20

Low Elapsed Time- 5

Top Speed- 5

• 50% bonus for points scored at Championship rounds in Western Australia

Elapsed Time:5.693secondsJohn Zappia, 7 June 2015, FUCHS Winternationals,Willowbank Raceway

Speed:258.42 mph (415.89 km/h) P. Kapiris, Sydney Dragway, May 2013.

Perth Motorplex

Track ET Record -5.683 SecondsJohn Zappia, 6 February 2016

Track Speed Record -253.86 mph (408.55 km/h)John Zappia, 6 February 2016

The Top Doorslammer 5 Second Club is a group of drivers who have run a quarter-mile in the 5 second range. Only 12 drivers have ever managed to run a 5-second time. John Zappia was the first in the world to run a legal Doorslammer 5 with a 5.967 second pass at 241.97 mph, on 17 September 2005, in his Rentco Monaro Top Doorslammer at Western Sydney International Raceway, NSW.

Official sponsors

• Fuchs
• Sidchrome Official tool

• Perth MotorplexKwinana Beach, WA^[1]
• Western Sydney International DragwayEastern Creek, NSW^[2]
• Willowbank RacewayIpswich, QLD^[3]
• Adelaide International Raceway South Australia
• Hidden Valley RacewayDarwin, Northern Territory^[4]

• Drag racing classes
• Motorsport categories in Australia

• Articles with short description
• Short description matches Wikidata
• Use dmy dates from August 2021
• Use Australian English from August 2011
• All Wikipedia articles written in Australian English
• Articles needing additional references from September 2010
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