Any 4 cylinder RWD sedan, subcompact and compact two door cars. No Convertibles, No 2 seat sport cars
and no front wheel drive cars. All glass must be removed and a screen must be placed in the windshield
area. 1in. Max welded wire hole opening, no chicken wire. Must have a complete 6 point roll cage, installed in
a safe professional manner. 1 1/2 in. 095 wall steel tubing minimum with the three door bars on drivers side
and 2 door bars on the passenger side. All roll cage in drivers area must be padded. Front loop to protect
drivers legs and feet. No sharp pointed objects in the drivers area. Cars must have a minimum 18 in. high
number painted on both front doors and roof. They must be painted with a contrasting color. All cars must
have an approved fully charged fire extinguisher accessible. ABC ONLY! Stock hood latch must be removed
and replaced with at least 2 hood pins. Any over competitive cars will be slowed down by track. Aluminum
racing seat is mandatory. Driver side drop down window net mandatory!
Stock original unibody with full floor and firewall, Must be stock appearing body. May run after market
bodies. Aluminum bodies permitted. May tie unibody together. May fabricate frame front and rear using 2 x 3
in. tubing from strut tower in front forward and centerline of rear axle to the rear. Bumpers must run a stock
type fascia and or bumper on front. All bumpers must be mounted solid. All bumper ends must be rounded,
NO SHARP EDGES! One external hoop allowed on front and rear no wider than frame rails, above and
behind face of bumper. Must have tow hook for wrecker (example: Steel Loop or Chain). MUST BE ABLE TO
SUPPORT WEIGHT OF CAR!! IF NO HOOKUP IS PRESENT, WE WILL BEND STUFF TO GET HOOKED UP!
Valance bars for fuel tank and radiator only not more than 1 1/2 in. maximum size. One nerf bar on each side
is allowed but must be tight to door with no sharp edges at ends.
Engine must remain stock as manufactured. No headers or racing parts. Flat top or dish pistons only. No
rotary or fuel injected motors. .060 cleanup on cylinder bores allowed. Stock stroke crank shafts only (NO
STROKERS OF ANY KIND). No high performance ignition boxes allowed. No light weight pistons or rods.
OEM replacement only for engine being used. Hypereutectic allowed. No forged pistons. Exception: 4 cyl Ford
may use late model 2300cc Ranger pistons & rods. No windage trays. Pistons may not come above deck of
block (exception: Toyota laser block) pistons do come above deck in stock form. Min of 1” pipe plug must be
welded in the oil pan for viewing of internal components.
CYLINDER HEAD TECH
Adjustable timing gears allowed. No porting, polishing or adding of material. 165 lb compression limit, to be
measured with track gauge. Hydraulic cam & lifters only or as OEM manufactured.
Only stock OEM valves, springs, cam followers or rocker arms on push rod motors
One carburetor two barrel only, may use stock unaltered 2 barrel or Holley #4412 must pass DH2 gauges
Racing Fuel Cell is Mandatory. Fuel cell must be mounted in a safe and professional manner. Must have a
protection loop behind the fuel cell and must be protected front, bottom, and both sides with a minimum 18
gauge steel minimum. The fuel cell itself must be a minimum of 12 in. from the ground to the bottom of the
cell. MUST HAVE FIREWALL BETWEEN DRIVERS COMPARTMENT AND TRUNK AREA. Must have FUEL
SHUTOFF IN the REACH OF THE DRIVER on the right hand side of the car. You also must have a master
on/off switch painted a bright and clearly marked in reach of a track official from the outside of the car, on the
left side of the steering column on the dash.
Any battery inside drivers compartment must be in marine type container.
Radiator must be mounted securely with a two quart catch can. Fan Shroud recommended.
Must have stock suspension. All front control arms and rear trailing arm pivot points must be in stock
position. Must use stock OEM ball joints. All cross members must be in stock position, no slotting or
repositioning of cross member to alter wheel base or change angle of control arms and trailing arms. No rod
ends or Heim joints. May use racing springs. One adjustable cup, no other adjustments are allowed. This
means 1 per car and no other spacers.
Rear differential must be locked, no spools or aluminum parts
Flywheel must remain stock (unaltered) steel, no aluminum, etc. No machining, except for clean up on clutch
mating surface. 18 pound minimum.
Clutch must be OEM type only, no light weight parts. This means clutch disc and pressure plate.
Transmission must have all working gears.
Drive shaft steel only. (Must be painted white for easy visibility if lost on track)
Must run muffler, any type & mounted securely!
Manifolds: Must run stock unaltered OEM cast iron exhaust manifold. Optional Ranger header part #
57Z9430C allowed. MUST have Ford logo. Intake must be OEM as cast, no modifications, carb type manifolds
only. With a max 1” carb adaptor (no fuel injection manifolds allowed).
No brake shut offs, all four brakes must be working. There will be random brake checks.
You are allowed to run 4 racing wheels with the same offset and the same size on your car. No spacers or
wheel adapters. Wheels maximum width of 7 inches and mandatory 1 inch lug nuts. Tire packages will be
announced as soon as possible.
Stock DOT passenger car tire allowed. Maximum width of 8 inches. No winter tread or studded tires. NO
RECAPS! NO tires will be allowed that have the word WINTER. The snow cap mountain logo must
accompanied with the rain and sun logo. American Racer size 23.0 / 7.0 - 14 permitted. Grooving, buffing,
and siping are allowed.
WEIGHT & BALLAST
Any weight inside drivers compartment must have 2x2x1/4 in. minimum plate on the back side of weight, the
weight must be painted a bright color for easy visibility. Car must weigh 2500 pound minimum with driver after
the race without adding fuel. Weight with track scales. OUR READING IS FINAL!
The top 10 finishers may be torn down at the Promoter/Race Directors discretion, by the Tech Inspectors. If
for any reason anyone is to be found illegal, they will lose their money and points for the night.
Anything not covered in these rules will be up to the discretion of the DH2 Track Officials. DH2 Track Officials
decisions are final!
*Subject to Change.