DragFactor Modding Group will be striving to represent the following classes of drag racing in it's DragFactor game, the aim is to reproduce as many of the current racing teams as possible in all group-1 heads up racing

Group 1 - Heads Up
The six Group One categories represent the Professional area of ANDRA Championship Drag Racing, competing “heads-up” (even starts), using a Pro Start..

Top Fuel
Top Fuel dragsters are the most spectacular race vehicles on earth, using large capacity supercharged V8 engines burning nitro-methane fuel, accelerating from zero to 500 kph in under five seconds.

Automobile engine required using 90 degree V8 configuration up to 8.19 litres (500 cubic inches).

Minimum weight 826.7 kg (2100 lbs.) including driver.

Top Alcohol
Top Alcohol Eliminator combines supercharged alcohol fuelled vehicles from the dragster, funny car and altered classes, running heads-up.

Top Alcohol Dragster (TA/D)
All hemi, canted valve, all engines with more than two valves per cylinder and all engines over 6.55 litres (400 cubic inches): 121.8 kg/litre (4.40 lb/cubic inch) with minimum weight of 771 kg (1700 lbs.) including driver. Supercharger overdrive limits apply. Methanol fuel only.

Engines up to 6.55 litres (400 cubic inches) using wedge cylinder heads: 121.8 kg/litre (4.40 lb/cubic inch) with a minimum weight of 1700 lbs (771 kg) including driver. Supercharger overdrive limits apply. Methanol fuel only.

Top Alcohol Funny Car (TA/FC)
Funny cars with a weight-break of 110.7 kg/litre (4.00 lb/cubic inch) . Supercharger overdrive limits apply. Methanol fuel only.

Top Alcohol Altered TA/A
Altereds with a weight-break of 108 kg/litre (3.90lb/cubic inch). Supercharger overdrive limits apply. Methanol fuel only.

Top Doorslammers
Top Doorslammers are the ultimate drag racing sedans, using replicas of production sedans and coupes with full racing chassis and large capacity V8 engines using methanol fuel and supercharging.

145.3kg/litre (5.25 lb/cubic inch) or a minimum of 1224.7kg (2700lb), including driver for vehicles using screw type superchargers 137.3kg/litre (4.96 lb/cubic inch) per cubic inch or a minimum of 1156.6kg (2550 lb), including driver for vehicles using Rootes type superchargers.

Top Bike
Reserved for top of the line, nitro burning motorcycles. Superchargers are also permitted.

True motorcycle engines limited to 3277cc (200 cub. inches) with one form of supercharging, or 2621cc (160 cubic inches) where two forms are used.

Pro Stock
Pro Stock cars are the highest development of street appearing, four seat sedans or coupes using V8 engines fitted with carburettors only

Minimum weight of 1043.05kg (2300 lb) including driver. Automotive iron V8 engine using two valves per cylinder operated by pushrods. Aluminium cylinder heads permitted. Maximum engine capacity of 6571cc (401cub. inches).

Pro Stock Motorcycles
Pro Stock Motorcycles are the highest development of naturally aspirated, stock appearing motorcycles.

Bikes using two valve factory Kawasaki heads must weigh 77.2kg/litre (6.40 lb/cube).

All Kawasaki two valve engines with aftermarket cylinder head & Suzuki two valve with factory cylinder head must weigh 182.7 kg/litre (6.60 lb/cube).

Suzuki four valve engines must weigh 190.9 kg/litre (6.90 lb/cube).

Pushrod V-twin engines will be permitted with weight-break of 103.9 kg/litre (3.75 lb/cube) per cub inch and a maximum capacity of 2620cc (160 cubic inches).