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(REVISED FEBRUARY 2014 for 2014 SEASON)
1. BODY: Any
manufactured full frame steel body car or ½ ton pick up with a minimum wheel
base of one hundred eight (108) inches.
No unibody vehicles other than Chrysler products with a minimum wheel
base of one hundred twelve (112) inches.
Frames may be patched with flat stock four (4) inches beyond repaired
area only. Frame between rear bumper and
rear spring pocket may be replaced with a piece of tube. No boxing of frames. No skinning of sheet metal other than
driver’s door, front passenger’s door, hood, and trunk lid. Hole may be cut in
hood to allow for air breather clearance.
May run mud deflector or rear opening hood scoop for air cleaner no more
than two (2) inches high. Air cleaner
cannot be higher than mud deflector. All
skinned doors must have door bars. Dash
may be removed if replaced with a bar 1 ½ inches .090 wall tubing tied in with
roll cage. May cut hole in trunk pan or
pick up bed so fuel can get away from interior of vehicle in case of fuel cell
rupture. Hole can be no larger than
eight (8) inches over the width and length of fuel cell. Front wheel wells may be removed. If it unbolts, removal is permitted. Fender, door panel, and quarter panel can be
replaced with sheet metal beginning four inches (4”) from top body line. No flat panel. Stock appearing body line required. No other metal can be cut from body. No fuel cells allowed in interior of
vehicle. Stock floor pan, trunk pan and
pick up bed floors must remain intact except as mentioned above. Pick up gates cannot be skinned. Outer fenders may be trimmed for tire
clearance only. No skinning of rear
wheel wells. Tires must fit under
vehicle. Front grill area, both
fiberglass and plastic, may be replaced with flat plastic/sheet metal or after
market nose pieces. Both body and frame
must be completely stock other than the above mentioned areas. No frame alterations of any kind. No cutting, no notching, no sectioning,
etc. No grafting other make and model
front stubs allowed. No exceptions! Stock front and rear bumpers for make and
model only. Bumpers may be replaced with
round or square tubing no more than two (2) inches OD and .125 wall. Replacement bumpers must be in stock location
and end of bumper must curve back toward the tire. End of bumper cannot curl back and connect to
the side of the frame. Side support is
allowed on tube bumper if connected to tube in front of frame horn. Tube end must remain open for measuring
purposes. Support tubing from the roll
cage to the bumper is not allowed. All
glass, window regulators and flammable materials such as seat, head liners, plastics,
carpeting, etc. must be removed. Stock
break pedal and stock after market clutch pedal must remain in original stock
locations. Doors, hoods, trunk lids and
tailgates must be secured so they will not open on impact. Hood pins permitted on hoods and trunks. Stock firewall must be unaltered and in stock
location. Must have rear firewall of
aluminum or steel the full width of vehicle.
Car and pick up interior must be open.
No cockpits allowed. Pick ups may
have a steel cover on bed but must be removable and secured properly. Hood pins allowed. No moving of body forward, backward or side
to side allowed. May run rear spoiler no
more than four (4) inches high and no more than forty five (45) degree angle
measured from rear deck. No rear scoops
allowed. No exceptions!
2. ROLL CAGE: Roll cage must be
at least four (4) point 1 ½ inch .090 wall tubing with driver side door
protection. Refer to general rules for
side door protection. Roll cage must be
built in such a way so as not to collapse in the event of a rollover. Rear hoops required for protection of fuel
cell and must be tied in with main cage.
Front hoop tied to main cage is highly recommended or one bar for
radiator protection tied to chassis.
Front hoop or bar and rear hoop must be inside of grill and trunk panel
and not visible on outside of car or pick up body.
3. SPRINGS AND SUSPENSION: Must be stock type spring for make and model
vehicle. No alteration of springs
allowed. Springs and suspension must be
mounted in original stock location. No
lowering blocks, weight jacks, spacers, etc. allowed. Only one spring per wheel. No traction devices of any kind allowed. No lift bars, pull bars, traction bars, track
bars, panard bars, ladder bars, etc. stock or otherwise allowed. No torque link between transmission and rear
end. No torque link bars of any kind
allowed, stock or otherwise. Upper and
lower “A” frames must be stock. Front
spindles must be stock for cars and pick ups.
After market shocks allowed, no more than 50/50 ratio. No coilovers, sliders, or adjustable, etc.
allowed. No aluminum shocks
allowed. Only one shock per wheel
mounted in original stock location for make and model of vehicle.
O.E.M. production master cylinder and brakes only. No aluminum component allowed other than
O.E.M. master cylinder. Only one master
cylinder allowed. No drilling of brake
rotors and no single disc rotors allowed.
Right front brake can have a shut off valve if shut off valve is located
under the hood. No controls of any kind
in vehicle interior.
Must be stock for make and model of vehicle.
No aluminum allowed. No
alteration of any kind allowed. Must be
located in original stock location. No
tilt steering columns allowed. May be
replaced with straight steering column or steering shaft with a minimum of two
(2) universal joints in steering shaft between firewall and steering box. Quick disconnect steering wheels
allowed. Must be stock tie rods and ball
joints. No tube tie rod, heim joints or
after-market drag links allowed. No rack
and pinion, no center point, no steering quickeners, etc. allowed. No exceptions!
7. REAR END:
Stock production rear end or Ford nine inch (9”) rear ends. Floaters allowed. Tires must remain inside fenders and quarter
panels. Rear end must be locked or
8. WHEELS AND TIRES: After market
steel wheels, stock steel wheels, or wagon wheels allowed and must be no wider
than eight (8) inches. Wheels can be
reinforced. Tires must pass ten (10)
inch hoop, DOT street
tires only. No beadlocks allowed. No screwing tires to wheels, no racing tires,
no studded tires, or recaps. No off-road
tires of any kind allowed. Grinding and
any other alterations not allowed. All
wheel weights must be removed. Wheel
studs on right side must be ½” minimum and must have oversized nuts on all four
Engine and body must be of same manufacture such as Ford to Ford, GM to GM,
etc. Stock production cast iron engine
and heads only. Engines must be mounted
in stock location. Solid mounts or tie
down chains acceptable. No setbacks
allowed. No factory performance heads
such as Chevrolet small block angle plug heads, bowtie, double hump heads,
Vortec, Ford SVO, etc. allowed. Guide
plates for push rods allowed. Aluminum
valve covers and aluminum water pumps allowed.
Steel pulleys only. No after
market heads of any kind. No porting,
polishing or pocket porting. No
deburring of any kind on heads or manifolds.
Screw-in or pinned studs allowed.
No racing engines or parts, super chargers, turbo chargers, nitrous oxide,
alcohol, nitro, etc. All engines must be
stock stroke. Chevy engines must use 5.7
rods only. No fuel injection or
computers allowed. Engine must be
naturally aspirated. Stock mechanical
fuel pump only and must be block mounted and in stock location. No roller cams, roller rockers, or roller tip
rockers. Rockers must be stamped steel
only. No stud girdles allowed. Raised crank case breathers allowed. Screw in
studs, after market rod bolts, lifter valley pan allowed. Must use stock starters. No solid lift cams allowed. Valves can be no larger than 1.94 intake and
1.50 exhaust. Flat top pistons with a
minimum of two (2) valve reliefs will be allowed in all engines. All Chevrolet 400 motors and all big block
motors are not allowed. No dome pistons
allowed. No machining beyond valve seat.
No factory high-performance engines allowed.
No mini starters allowed. Engine must be able to idle at eight hundred
fifty (850) RPM. No more than one hundred eighty (180) pounds
of compression allowed at time of inspection with track gage. Procedure for compression test is as
follows: * removal of all eight (8) spark plugs *
carburetor butterfly wired open
* compression test done on any
one (1) random cylinder with track gage until pumping stops * all cars will be checked on the same
cylinder. If compression measures over one hundred eighty (180) pounds, car will declared illegal.
10. INTAKE AND EXHAUST MANIFOLDS:
Stock production cast iron 2-barrel or 4-barrel intake manifold only. No high rise manifolds, stock or otherwise
allowed. No bowtie, after-market, etc.
allowed. Stock production cast iron
exhaust manifolds only. No center dump
manifolds allowed. No porting, polishing
or deburring of manifolds allowed. Must
run exhaust pipe off each manifold or behind Y pipe a minimum of two (2) feet
long and maximum of two (2) inches in diameter.
No headers allowed.
11. CARBURETOR: Holley 4412 carburetor on
all cars is mandatory. Must be gauge
legal. Must remove choke plate and
shaft. One (1) air filter element with a
maximum height of four (4) inches may be used.
Must be stock H.E.I. production distributor ignition only. No capacitive discharge ignition
systems. No racing ignition systems
including ignition modules and ignition coil.
No MSD, Accel, Mallory, etc. ignition components except spark plug
Only stock productions O.E.M. manual or automatic transmissions allowed. No powerglide transmission allowed. Manual transmissions must have a stock single
disc clutch inside an explosion-proof bell housing or scatter shield of at
least ¼” x 6” steel covering clutch area from top down both sides one hundred
eighty (180) degrees total and be securely fastened. After market clutch pedal assembly may be used.
Automatic transmissions: Stock production O.E.M.
automatic transmission with torque converter only. No couplers, racing transmissions, powerglide
transmissions, etc. allowed. Stock
torque converters for transmission must be used. No transmission cooler in driver’s
14. RADIATOR: Aluminum
radiator allowed. No other cooling
devices other than radiator in front of engine.
Only one radiator allowed.
Stock steel driveshaft must be painted white with driveshaft hoop no further
back than six (6) inches behind front universal joint.
Must weigh three thousand two hundred (3,200) pounds minimum with driver in
vehicle on track scales after feature race.
17. BATTERY: Batteries are covered
under General Rules, #19.
18. MISCELLANEOUS: No driver adjustable controls of any kind
inside driver’s compartment. Track
reserves the right to transfer vehicle to UMP Stock Car Class if vehicle does
not remain “Pure Street”
and rules contained herein are not followed.
19. NOTE FROM TRACK
PROMOTOR: The Pure
Street class is meant to be a
competitive, low cost class in which to race.
Please do not make racing more expensive than it has to be by using
parts not allowed in the Pure Street Class or the vehicle will be disqualified
if racing in this class. The
driver/owner does have the choice to register and run the vehicle in UMP Stock
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