ARCA Menards Chevrolet Impala (NW09)

The ARCA Menards Series Chevrolet Impala is based on cars featured in NASCAR’s primary regional development series, which developed from the former Busch North and Winston West Series, more recently known as the K&N Pro Series East and West. The ARCA Menards Series car is based on rules that existed for pre-Car of Tomorrow style cars, with numerous variations to distinguish the cost and performance of these development series cars from their top level counterparts.

The cars can be either a 105 inch (as used in the former Busch Grand National East) or 110 inch (as used in the former Winston West) wheelbase, typically with a hand-built steel body, although teams may also use a one-piece composite body. The rules specify engines with a 12:1 compression and maximum 358 in³ displacement. Teams have the option of building their own engines or running a “specification” engine, built with NASCAR-approved pieces that may be purchased from an approved supplier. Spec engines may be purchased as a kit or pre-assembled.