ANY 4 cylinder rear-wheel drive pony car. The following are considered pony cars:
General Motors Ford/ Mercury Amc
Monza Bobcat Spirit
1) Roll cage
At least 6-point roll cage is required. Must be at least 1.5 inch outside diameter .090 wall
thickness steel tubing. Bars must form a cage around driver and reach as close to roof as
possible. Top bar must be 2 inches above drivers head with helmet on. Must have X brace
behind driver and at least 3 drivers door bars and 2 door bars on passenger side. Roll cage
must pass safety inspection. After each major crash cage repairs must pass inspection
before car is allowed to race.
2) Bumpers-side rails
Must have front and rear bumper. Reinforcing ok.
No sharp edges. Side rails allowed, must conform to body lines and have no sharp edges.
Must remain stock. May be trimmed for roll cage only. Dash maybe removed. Trunk
floor maybe altered for fuel cell installation. Tinning of the interior/cock pit will be
allowed. Motor must match body being used. (Ford to Ford GM to GM) After market
nose piece ok
4”rear spoiler allowed.
Quick release steering recommended. No steering quickeners.
No boxing in of steering column
5) Wheels and Tires
Any type steel rim, maximum 7” bead width, after market rims ok. 2 inches or more from
the inside bead to the mounting surface. No bead locks or screws. No aluminum rims.
Grooving or siping allowed. No race tires, bar grip style snow tires. No excessive
grooving or siping. Tires allowed: 60, 65, 70, 75, or 80 series 13” or 14” tires.
No aluminum parts. Suspension must remain stock, except for upper strut mount may be
altered to adjust caster and camber. No inter changing of frame cross members. Any steel
spring that is stock appearing may be used but must fit in stock mounts and stock
location. Non-adjustable spring spacer is allowed but must be in stock location. Stock
type shocks. Shocks must be in stock factory mounting holes. One (1) shock per wheel
for a total of 4 per car. No coil over shocks.
NO weight jacks
Cars must have stock factory brakes on all four wheels and in good working order. One
master cylinder. No restrictor. No in cockpit adjusters. No right front brake shut off. One
complete braking assembly per wheel. No lightening of any brake component. Including
but not limited to rotors or drums. Rotors must retain stock diameter. Rear end must have
brake shoes and all components on each side and be in proper working order and
8) Safety Equipment
Helmets must be at least a Snell 95 rating. NO motorcycle helmets.
All glass must be removed, Must have screen or bars in front of driver.
Driver’s side window must have a working window net. Must open from the
top front and go down.
(c) Preferably bright colors.
All cars to have 18” high numbers on each door and on the roof, and 6” high
numbers on front and rear of car.
Approved aluminum racing seats
(e) Seat Belts
All cars to have 3” lap belts and 2” shoulder harness, Belts to be less than 5
years old and in good visible condition.
(f) Fire Suits
Approved fire suits are required when on the track. Must be in good
condition and pass safety inspection. NECK BRACES are strongly
(g) Lead Weight
Must be painted white and with car number clearly marked. Must be securely
attached with at least (2) ½ inch rod size bolts.
9) Drive Train
a) Any pony car transmission allowed. All gears must work and have working reverse. No
lightening of any kind.
b) Car must have working clutch. Stock components only. Must be for engine used
c) No aluminum flywheels, pressure plates, or drive shafts. No cutting or lightening of
flywheel will be allowed. Back of flywheel must remain stock. No drilling of holes,
cutting of grooves or removing of any metal except to resurface the face. Minimum
thickness of flywheel is one (1) inch. Drive shaft must be painted white and have car
number clearly marked on it. Must have safety hoop on front of drive shaft. If a magnet
does not stick to drive shaft it is illegal.
d) Automatic transmissions must run stock converter.
e) A 1.5 inch inspection hole shall be drilled in the bell housing which must be accessible
for the tech inspector to see clutch, flywheel, pressure plate, etc.
f) Must have a shield above bell housing. That will deflect any clutch debris towards the
g) Ram couplers not allowed
h) Stock pony car rear end only. Locked rear ends ok. No 9” Ford rear ends. No quick
change or floater rear ends. No aluminum rear end parts. No torque sensor devices
Must use stock manifold. May use stock OEM Header. No grinding, polishing, or cutting
of any kind to the manifold. Must have an exhaust pipe that runs from the manifold to a
point behind a line equal to the back of the driver’s seat. Maximum diameter of the pipe
is 1 7/8 inch O.D. The pipe can not protrude past the side of the car (Maximum of 4” is
allowed from exhaust manifold to the pipe for transition.) Car cannot exceed 95 decibels
at 100 ft. Must have a manufactured muffler.
a) One (1) 12 volt battery to be mounted away from the fuel cell and driver. Must be
secured properly. Held in the car with metal in such a way as to keep it from coming
loose in a crash and not to short out.
12) Aspiration- Fuel
a) A approved fuel cell is required
b) Intake manifold must be stock. No grinding, cutting, or polishing of any kind. Allowed to
use any carb adapter with a maximum thickness of 1 1/2 inches from top of intake to
bottom of carburetor including gaskets.
c) Single 5200 series pony car carb: E.G.R. plate O.E.M. to engine, if used, must be bolted
not welded to manifold. Choke plates may be removed. No milling or grinding of choke
tower, top of carburetor, or intake manifold. Carb must be mounted with large bowl
toward engine. No 6500 series carb allowed.
d) Carburetor throttle plate and bore must be stock. Primary throttle bore 32.00 mm.
secondary throttle bore 36.00 mm. Primary venture diameter 22.00mm, secondary
venture diameter 27.00 mm for the holly/weber carburetor.
e) No blowers or turbo chargers
f) Any stock O.E.M. Intake
g) Distributor must be stock
h) Fuel must be pump gasoline only. No Alcohol, No nitrous, or nitro. No nitrous devices
allowed. No methane. E-85 is allowed.
i) One (1) fuel line only connected to carburetor.
j) Electric fuel pumps allowed, but they must be wire into the oil pressure system to prevent
them from pumping without oil pressure.
k) Must have a rear firewall between driver and fuel cell. Must be made of steel or
aluminum. Can not go any farther forward than where the back of the rear seat would be.
a) The minimum weight of the car with driver after the race must be 2500 Lbs.
b) Stock configuration, Ford 2000,2300; GM 140, 151; or Chrysler 2.2 engines
c) Bore, stroke, and rod length shall be
Bore Stroke Rod Length
GM 151 4.000” 3.000” 6.000
GM140 3.500” 3.625” 5.700”
Ford 2000 3.571” 3.030” 5.000”
Ford 2300 3.781” 3.126” 5.200”
Chrysler2.2 3.440” 3.620” 5.945”
d) Cylinders may be bored to a maximum of .060” over stock
e) 4 Flat-top, valve relief or dish pistons only. Pistons must be three ring, full skirted type;
No grinding or lightening. Floating wrist pins are allowed. Wrist pin height-center of
wrist pin to top of piston
GM 151 1.528” 1.560”
GM140 1.480” 1.480”
Ford 2000 1.588” 1.588”
Ford2300 1.578” 1.598”
Chrysler 2.2 1.572” 1.573”
f) Crankshaft and connecting rods must be O.E.M. to block No lightening, grinding, or
polishing of any type. No marine parts. Absolutely NO strokers. Balancing is allowed.
O.E.M. stock steel rods only. No long rods
g) Camshaft may be hydraulic performance type. No solid lifters, roller cam, roller follower,
roller rockers or roller lifters.
h) No grinding, porting or polishing of any kind is allowed on heads and intake manifolds.
This includes no painting of runners and no matching of gaskets. Head may be milled on
block mounting surface only. No acid porting allowed.
i) No turbo heads or turbo intake manifolds.
j) No dual camshaft or dual spark plug heads
k) No reverse cooling. Water pump and pulley must be O.E.M. to block. No aluminum
water pumps or water pump pulley on Fords
l) Valve diameter must be stock for engine. Valve seat cut; the lowest angle cannot extend
more than .250” from the beginning of the 45 degree (valve seat). Intake and exhaust
measurements must be…
GM151 1.720” 1.500”
GM140 1.625” 1.375”
Ford2000 1.653” 1.418”
Ford2300 1.739” 1.500”
Chrysler 2.2 1.600” 1.390”
m) No dry-sump oiling, No external pump oiling. Homemade or after market pans allowed.
If you are using a block that does not have a fuel pump access on Fords you must have a
.750” (1” recommended) inspection hole on side of oil pan and must be easily accessible
to inspector. If not, the inspector may require removal of oil pan.
14) Radiator- One (1) radiator only; must be mounted in front of engine and must not protrude
15) No engine setback
16) No radios or any other forms of communicating to the driver during the race are allowed.
This includes hand gestures positive or negative.
17) Points go with the car, but, may not collect points at Viking Speedway and another track on the same
Spend money on car handling not on expensive engine parts.
18) Silent Protest
a) Only a driver competing in the feature can protest.
b) Protester must give race official $150.00 cash before start of feature and designate car to
be protested. Tear down includes both top and bottom end.
c) A driver may only protest one engine per race.
d) Only the tech inspector has the final word on the legality of the race cars involved in the
e) No person shall prevent or interfere with the protest procedure. f) If protested car found legal, $50.00 goes to Viking Speedway and $100.00 goes to protested car. If
found illegal, $50.00 goes to Viking Speedway and $100.00 goes back to protester.
a) The driver is responsible for the actions of his pit crew in all respects. The driver shall be
the sole spokesperson for his/her car owner and pit crew in any and all matters, and must
talk with the chief track official in charge regarding their conduct or behavior.
b) Any participant directly involved with any fighting or misconduct will receive a penalty.
c) No participant shall subject any track official, employee, sponsor, or participant to any
abusive or improper language at any time
a) Loss of all moneys for that night and loss of points for that night and previous night of
b) Viking Speedway has the right to confiscate illegal part or parts, or fine X amount of dollars or both.
21) Rule Changes
Every effort will be made to not make rule adjustments during the racing season.
However the Viking Speedway board of directors reserves the right to adjust the rules if it is deemed
necessary to do so.