RULES SPECIFIC TO MINI-STOCK
All vehicles must comply with
General Rules, except where exempted in this section.
A. ELIGIBLE MODELS
1. Rear wheel drive cars
MUST be stock, only, 2 or 4 doors permitted. Four-cylinder engines
2. Front wheel drive cars
must be 4 cylinder engine vehicles.
3. Track reserves the
right to disallow any body style or to allow any other
1. Engine must be stock
Chevette engine. Internal modifications will be permitted.
2. Any grind of cam
will be allowed and engines may be balanced.
3. Carburetor must be
Stock Chevette carburetor. Internal modifications will be permitted.
4. No aluminum heads
will be allowed.
5. Headers are allowed.
1. Engine must be stock
for make and model of car. Valve covers must remain stock. No rotary
or turbo-charged engines will be allowed.
C. DRIVE TRAIN
1. OEM clutch system
only, no direct drives or couplers will be allowed.
2. Maximum allowable
rear-end ratio will be 4.11:1
1. Automatic or manual
transmission will be allowed. Must be stock for make and model of
1. Chevettes must weigh a
minimum of 1,800 pounds.
2. Others must weigh the
following minimums according to displacement:
a: 2.0 liter engine
(2,000 cc) – 2,100 pounds.
b: 2,2 liter engine
(2,200 cc) – 2,300 pounds.
c: 2.5 liter engine
(2,500 cc) – 2,500 pounds.
3. Weight may be placed
anywhere at the preference of the competitor so long as it is
securely and safely fastened where it cannot move while the vehicle
is on the track. Installations are subject to the approval of
E. CHASSIS, BODY, INTERIOR
1. Front wheel wells
may be removed. Rear wheels wells must remain. Front and rear
firewalls must be in original positions. Full floorboard is
required. Driver's compartment must be sealed from fuel tanks. Doors
must be welded shut.
2. Shocks must be in
stock position. All suspension parts must be stock.
3. Fuels cells will be
permitted or fuel tanks. Either must be secured with steel straps
and separated from driver’s compartment.
4. 6 point roll cage
with bars a minimum of 1 1/2" in diameter is required. Minimum of 3
bars in driver’s door with 1/8" thick steel plate the height and
length of the driver's door, and at least one bar in passenger door,
1" steel tubing allowed.
5. Maximum spoiler
height will be four inches (4"). No sideboards or wraparounds will
nosepieces will be allowed, but may extend no more than six inches
(6") in excess of stock Chevette nosepiece as measured from center
of front wheels. Track reserves the right to disallow any nosepiece.
7. Measurement from
bottom of stock rocker panel location on driver's side to bottom of
stock rocker panel location on passenger side, over the top, may be
no less than 11 feet (132 inches). No side panel or ground effects
panels may be added to panels for measurement purposes. Measurement
will be from STOCK location.
8. All glass must be
9. Weight jacks will be
doors must be bolted or welded shut.
interior material must be removed, including headliners, door
panels, carpet, and fabric. No flammable materials permitted in
Aluminum racing seat and five-point harness required.
Approved window net required on driver's side.
hole may be cut in the hood and trunk, no more than 12 inches in
diameter, for use by track crew in the event of fire.
Battery may be moved into cab area, provided it is completely
covered and securely fastened. Marine battery box recommended.
Minimum four-point roll-over bar with crossbar behind seat and two
braces forward required, with minimum 1 1/2-inch bars. Full roll
Racing fuel cell is recommended when possible and reinforcement of
trunk area is recommended. Firewall required separating fuel cell
from driver area.
Fuel cell must be mounted in trunk area for safety purposes.
All springs and shocks must
be in stock position. Shock towers may be slotted to allow camber
Stock bumpers may
be reinforced, but installation must be approved by track.
F. TIRES & WHEELS
1. Seven inch wide racing
wheels will be permitted.
2. Street legal radial
tires. No exotic or made for racing tires will be allowed except for
Hoosier 790 as noted in Rule 2. Tire legality issues will be ruled
upon at track's discretion.
3. Hoosier 790 series
tires will be permitted in 13, 14, and 15 inch sizes. Any car
running Hoosier 790 tires must add 100 pounds.
Racing tires must be purchased from official track supplier.