RACE CATEGORIES AND INDEXES

There are a large number of different vehicle and race categories in drag racing. We change the race categories depending on the type of race meeting. We have three main types of meetings, but may not run every type each season. On occasion, we may have a special meeting with different categories. If so, a full list will be on the entry booth.

A class is a specific specification for a car/bike, including its body style, engine type/size and its weight. A class designation (such as A/D) is made up of two parts. The first (the ‘A’ in this example) is its power to weight ratio with the lower the letter, the heavier or less powerful it is – ‘A’ being the lightest most powerful combination, and H being the heaviest least powerful combination. A powerful engine in a heavy car/bike will have a lower letter than the same engine in a lighter car. If the letter is a double (eg AA) this means the engine has a “power adder” such as a supercharger, turbocharger(s) or NOS. The second part (the ‘D’ in this example) is the body style. A is an altered, D is a dragster, FC is a funny car, TS is a top street (street appearing) scr, DB is a dragbike, PCB is a pushrod bike (like an old style Triumph or Harley). There are a few exceptions, and there are differences in the way different governing bodies make up the classes. Each class has its own national record for ET and for speed (mph)

A category or bracket is a group of vehicles that race together to produce one winner. Some categories are predetermined by the national governing body for example “Super Sedan” A category can have cars that are classified (have a class) or that are specially build for the category. Specially built cars also have an identification system but this is much simpler. For super sedan there is SS/A for v8 cars, SS/B for six cylinder cars, and SS/C for four cylinder cars. Categories pre-determined by the NZDRA are Junior Dragster (for dragsters and Funny Cars, drivers between 7 – 18 years old), Super Street (for registered and warranted cars slower than 11.00 seconds), Modified (for Altereds, Dragsters and Funny Cars), Super Sedan (for street appearing cars) and Modified Bike (for street appearing bikes).

For some race meetings, Masterton Motorplex will create its own categories. For example, we often have “Import Street” for registered/warranted Japanese based street cars), Dragstalgia Hot Rod for hot rods older than 1948, Dragstalgia Muscle Car for muscle cars from 1948 to 1972.

All categories are assigned a number so the computer system can manage the racing, which is why you will sometimes hear phrases such as “C8” (which is Super Street). A list of the categories being run at the meeting is always attached to the entry booth (in the pits, just behind the VIP stand).

A bracket is another name for a category, but is often used to refer to categories that are based on ET. For example, there may be a series of brackets set at 7.5, 8.5, 9.5, 10.5 etc. In each bracket race cars that are slower than the bracket name but quicker than the next bracket name. For example in the 7.50 bracket are cars that are slower than 7.50 but quicker than 8.50

 

The categories for each of the main types of meeting are below:

TEST AND TUNE

Super Street – C8
–          Staggered start using self-nominated handicap (DYO) | .400 Full Tree | 11.00 seconds or slower | Eligible Classes: S/ST (any car that has a current rego and WoF or full tech inspection)
Modified Bike – C11
–          Staggered start using self-nominated handicap (DYO) | .400 Full Tree | Eligible Classes: AA/MB, A/MB, BB/MB, B/MB, CC/MB, C/MB (any bike that has a current rego and WoF or full tech inspection).
Competition Car Testing
–          All competition cars, no handicapping, run against any car, no seeding | .400 Full Tree | Eligible Classes: All competition cars except Junior Dragster
Competition Bike Testing
–          All competition bikes, no handicapping, run against any bike, no seeding | .400 Full Tree | Eligible Classes: All competition bikes except Junior Dragbike
Junior Dragster Testing
–          All Junior Dragtsters, funny cars and dragbikes, no handicapping, run against any car, no seeding (Junior dragbikes must run separately | .400 Full Tree | Eligible Classes: All Junior Dragster, Funnycar, Dragbike

NATIONALS EVENTS AND MASTERTON MOTORPLEX FULL COMPETITION EVENTS

Group 1 – Heads-up Racing | .400 Pro Tree
Top Alcohol – C1
–          Minimum 7.50 performance requirement | Eligible Classes: TA/A, TA/FC, TA/D, A/FD
Top Doorslammer – C14
–          Eligible Classes: T/D
Group 2 – Index racing, staggered start using index for each class (as specified by the governing body sanctioning the meeting). For the latest index refer to the NZDRA or IHRA website (as relevant) | .400 Full Tree
Competition – C2
–          For Dragster (-/D), Altered and Funnycar (-/A). Eligible Classes: AA-, A-, BB-, B-, CC-, C-, DD-, D-, EE-, E-, RRR-, RR-, R-, AA/FN-, AA/N-, A/N-, A/F-
–          For IHRA sanctioned meetings only: AA/-I, BB/-I, CC/-I, DD/-I, EE/-I
Top Street – C7
–          Eligible Classes: X/TS, A/TS, BB/TS, B/TS, CC/TS, C/TS, DD/TS, D/TS, EE/TS, E/TS, FF/TS, F/TS, GG/TS, G/TS, HH/TS, H/TS, RRR/TS, RR/TS, R/TS
–          For NZDRA sanctioned meetings only: P/I, S/M ST/I
–          For IHRA sanctioned meetings only: XX/TSI, XX/TS, AA/TSI, BB/TSI, CC/TSI, DD/TSI, EE/TSI, FF/TSI, GG/TSI, HH/TSI, XX/MSI, XX/MS, X/MS, AA/MSI, AA/MS, A/MS, BB/MSI, B/MS, B/MS, CC/MSI, CC/MS, C/MS, DD/MSI, DD/MS, D/MS, EE/MSI, EE/MS, E/MS, FF/MSI, FF/MS, F/MS, GG/MSI, GG/MS, G/MS,HH/MSI, HH/MS, H/MS, RR/MS, R/MS,
Sport Compact – C6 (IHRA sanctioned national events only)
–          Pro Import minimum performance – 9.99 | Sport Mod minimum performance – 10.99 | Eligible Classes: P/I-A, P/I-B, P/I-C, P/I-D, P/I-E, S/M-B, S/M-C, S/M-D, S/M-E, ST/I-B, ST/I-C, ST/I-D, ST/I-E
Competition Bike – C9
–          Eligible Classes: TF/DB, BB/DB, B/DB, CC/DB, C/DB, DD/DB, D/DB, AA/PCB, A/PCB, BB/PCB, B/PCB, CC/PCB, C/PCB, DD/PCB, D/PCB, AA/PRO, A/PRO, BB/PRO, B/PRO, CC/PRO, C/PRO, C/PRO, DD/PRO, D/PRO, AA/SB, A/SB, BB/SB, B/SB, CC/SB, C/SB, DD/SB, D/SB.
–          For NZDRA sanctioned meetings only: AA/DB, A/DB, VRD
–          For IHRA sanctioned meetings only: AA1/DB, A1/DB,AA2/DB, A2/DB, AA3/DB, A3,DB, VRD/B
Group 3 – DYO racing, staggered start using self nominated index|.400 Full Tree
Supercharged Outlaws C4
–          Must be supercharged (blower, turbo, nitrous, NA nitro), Minimum performance – 7.99 | Eligible Classes: non-qualifiers in T/A and T/D, any supercharged Competition or Top Street, SCO
Super Sedan – C10
–          11.00 seconds or quicker| Eligible Classes: any Top Street, SS/AA, SS/A, SS/BB, SS/B, SS/CC, SS/C
Modified – C3
–          For Dragster (-/D), Altered and Funnycar (-/A). Eligible Classes: any Competition, AA/M-, A/M-, BB/M-, B/M-, CC/M-, C/M-
Super Street – C8
–          11.00 seconds or slower | Eligible Classes: S/ST (any car that has a current rego and WoF or full tech inspection)
Junior Dragster – C12
–          1/8th mile | Eligible Classes: J/JD, I/JD, S/JD, J/FC, I/FC, S,FC
Junior Dragbike – C13
–          1/8th mile | Eligible Classes: J/DB
Modified Bike – C11
–          Eligible Classes: AA/MB, A/MB, BB/MB, B/MB, CC/MB, C/MB, (any bike that has a current rego and WoF or full tech inspection).
Import Street – C21 (MMP Full competition events only)
–          11.00 seconds or slower, must be Asian (Japanese, Chinese, Korean) manufactured | Eligible Classes: S/ST (any car that has a current rego and WoF or full tech inspection)
Group 4 – Heads up, fixed index of 9.90, breakout applies | .400 Pro Tree
Super Gas – C5
–          Any body style or type of tech inspected vehicle allowed | Eligible Classes: any Competition, Top Street, Modified or Super Sedan, SG

DRAGSTALGIA

Group 1 – Heads-up Racing | .400 Pro Tree
Top Alcohol – C1
–          Minimum 7.50 performance requirement | Eligible Classes: TA/A, TA/FC, TA/D, A/FD
Top Doorslammer – C14
–          Eligible Classes: T/D
Group 2 – Index racing, staggered start using index for each class (as specified by the NZDRA). For the latest index refer to the NZDRA website | .400 Full Tree
–          Group 2 categories are only run as exhibition if there are vehicles that do not want to run the Dragstalgia categories
Group 3 – DYO racing, staggered start using self nominated index|.400 Full Tree
Dragstalgia Comp
–          Pre 1972 body style | Eligible Classes: any Competition, Top Street, Supercharged Outlaw, Super Sedan or Modified
Dragstalgia Hot Rod
–         Pre 1949 body style | Eligible Classes: any Super Street S/ST (any car that has a current rego and WoF or full tech inspection)
Dragstalgia Muscle Car
–         1949 to 1972 body style | Eligible Classes: any Super Street S/ST (any car that has a current rego and WoF or full tech inspection)
Super Sedan – C10
–          1973 or later body style | 11.00 seconds or quicker| Eligible Classes: any Top Street, SS/AA, SS/A, SS/BB, SS/B, SS/CC, SS/C
Super Street – C8
–          1973 or later body style | 11.00 seconds or slower | Eligible Classes: S/ST (any car that has a current rego and WoF or full tech inspection)
Junior Dragster – C12
–          1/8th mile | Eligible Classes: J/JD, I/JD, S/JD, J/FC, I/FC, S,FC
Junior Dragbike – C13
–          1/8th mile | Eligible Classes: J/DB
Modified Bike – C11
–          Eligible Classes: AA/MB, A/MB, BB/MB, B/MB, CC/MB, C/MB, (any bike that has a current rego and WoF or full tech inspection).

INDIVIDUAL CLASS REQUIREMENTS

For full details of all classes and requirements and latest indexes please visit the NZDRA website or IHRA website.

Masterton Motorplex reserves the right to add, remove or amend classes as required.