2017 Classification of Cars

A - Stock Class

Low horsepower, normally aspirated Rear Wheel Drive cars. Only allowable modifications listed below.

A - Modified Class

All A-Stock derived Rear Wheel Drive cars with modifications not permitted in Stock class. No internal engine or boost modifications allowed.

B - Stock Class

All normally-aspirated Front Wheel Drive cars and 4-cylinder All Wheel Drive cars. Only allowable modifications are listed below.

B - Stock Plus Class

All Front Wheel Drive "R-Type" cars (Integra R, Civic SiR, Neon ACR, etc.) Front or All Wheel Drive factory forced induction (i.e. turbocharged/supercharged) cars under 2.0 litres in engine displacement and normally aspirated All Wheel Drive cars with more than 4 cylinders. Only allowable modifications are listed below.

B - Modified Class

All Front/All Wheel Drive cars with modifications not permitted in Stock class. No internal engine or boost modifications allowed.

C - Stock Class

All Hi-Performance cars, typically with large engine displacement, all factory forced induction (i.e. Turbocharged/Supercharged cars) 2.0 litres and over in engine displacement (includes FWD, RWD and AWD cars) and (forced induction / normally aspirated High Output) rotary engines. Only allowable modifications are listed below.

C - Stock Plus Class

All new technology Hi-Performance cars (C5 Corvette, Dodge Viper, WRX STi, etc), typically with large engine displacement or high factory induction boost settings. Only allowable modifications are listed below.

C - Modified Class

All Hi-Performance cars (as listed above in C-Stock class) with modifications not permitted in Stock class. Also includes any A or B family cars with internal engine and/or boost modifications.

D - Home Build (Open)

Home built/Kit-cars/Non-production/Vehicles under 1500lbs. Must meet minimum wheelbase as per CASC/GCR rules.

Allowable Modifications for All Stock Classes

Note: The event organizer reserves the right to classify, on-site, any vehicle that does not readily fit into any of the above car classes.