In 2015 Transponders will be mandatory on all cars
To start the 2015 season
any engine will be allowed, any fuel. We may add weight and
a harder tire for larger engines to equalize for 360 engine.
After the division
has been established an engine rule will be written.
frames must meet these specifications: Thickness –
to be no less than .120 inch; Frame rail width –
must be two (2) inches; Frame rail height – must be
no less than four (4) inches and 2X4X.120 inch TUBE
STEEL ONLY. Frame rails may be tapered from front
roll cage upright to no less than two and one
quarter (2-1/4) inches. Length – frame rail must
begin no more than nine (9) inches behind center
line of front axle, and must be continuous to the
rear of the fuel tank. ALL FRAMES MUST BE APPROVED
Minimum width of
the frame inside must be no less than twenty-six
(26) inches between the frame rails. This
measurement will be taken at the front vertical
upright of the roll cage and continue all the way to
the rear of the frame. This rule also applies to the
lower rails of the chassis and must remain
twenty-six (26) inches minimum width inside
throughout the entire driver’s compartment.
No round tubular
frames of any manner, shape or form will be allowed.
base allowed will be ninety (90) inches measured
from wheel center to wheel center on both sides.
Roll cages must have a six point mount with rear
roll support mounted within eight (8) inches of the
top of the roll cage and run rearward to main frame
rail. Front roll cage upright may be extended below
belt line with square tubing. All roll cage tubing
must measure no less than one and three-quarter
(1-3/4) inches O.D. and .095 inch wall thickness.
All right angles must be gusseted and properly
All roll cages must measure no less than twenty-six
(26) inches inside at the top rear and no less than
twenty-three (23) inches inside at the top front.
Minimum side protection on both sides between bottom
of window opening and floor or lower chassis rail
must be two (2) vertical bars, equally spaced and
two (2) horizontal bars equally spaced. Side
protection bars are to be a minimum one and one-half
(1-1/2) inches O.D. and .095 wall thickness.
Top and rear roll bars and bracing behind seat must
be adequately padded in all areas where the driver’s
head may contact.
Roll cage must extend above driver’s helmet by a
minimum of two (2) inches DIRECTLY ABOVE THE
DRIVER’S NORMAL SEATED POSITION MEASURED FROM
SIDE TO SIDE. More clearance is recommended.
No roll cage extensions are allowed. If there is
not two (2) inches clearance above driver’s head,
car will not be allowed on track. Any additional
bars or hoops above or around driver must be
approved by PDTR.
Side window opening height must be no less than
seventeen (17) inches and no more than twenty-four
(24) inches, measured from the bottom of the top
roll cage bar to the top of the top horizontal side
High back aluminum or better seat is
mandatory. Seat must be securely bolted in a
minimum of four (4) places; 2 in the bottom and 2 in
the back of the seat with ¼ inch minimum diameter
grade 8 bolts. NO DZUS FASTENERS ALLOWED.
All cars must have protective
plating securely fastened to protect the rear half
of the bottom of the seat and the lower portion of
the vertical back of the seat. Plating can be no
less than one-eighth (1/8) inch thick steel or
one-quarter (1/4) inch thick aluminum.
Steering wheels must be
quick-release type. No plastic quick releases
Steering gear box and tubes
must be adequately padded to protect driver’s knees.
All cars must have a complete
firewall between the driver and the engine and a
firewall between driver and fuel tank. Rear
firewall must extend to bottom of the fuel tank.
All cars must have complete floor boards or adequate
length to protect driver’s feet. All sheet metal
must be no less than 22 gauge steel or .050 inch
rear view mirrors of any kind are allowed.
Ignition switch must be mounted
on the right side of the dash within reaching
distance of the driver when securely strapped in,
and clearly marked.
Toe strap on top of accelerator
pedal is mandatory
Bodies must be identifiable to automobile
manufactured bodies. Suggest using replica or
original tail-lights. You may run topless or open
top cars. If you run a roof NO WICKERBILL! PITCH
FROM FRONT TO REAR of roof NO MORE THAN 2in.!
Sprint type cars, midget, etc. do not maintain a
stock car appearance and will not be allowed.
No late model full bodied stock cars will be allowed
to run as a modified.
All cars must have a hood that extends over the top
of the radiator. Hoods must be straight front to
rear, and may be rounded right to left. Cowls and
mud deflectors may be part of the hood. No holes
are allowed in top of hood. All cars must have a
360 degree steel fan guard.
Stainless steel screening is compulsory in
windshield 2X2X3/16. Left and right windows must
have protective screen to deflect stone, etc. No
glass of any kind permitted.
Numbers must be on both sides of the car and roof if
– No rear
view mirror will be allowed.
Any American made
V-8 cast iron block production engine 360 OR smaller
may be used. Stock type aftermarket replacement
blocks may be used. No aluminum block or heads
allowed. No Oldsmobile Rocket blocks allowed.
Ignition must be camshaft driven. No more than one
(1) spark plug per cylinder and no more than two (2)
valves per cylinder will be allowed. Any engine
not listed must be approved by PDTR. No
titanium parts allowed anywhere on car except in
* Intake one piece, aluminum or cast
iron. No high rise tunnel ram. Unaltered carburetor,
fuel pump mechanical stock type diaphragm only, no
piston pumps. Carburetor heat spacer allowed,
a maximum of 1/2 inch thick. Only one (1) air
cleaner is allowed, 14” round and 4” tall. No
stack extensions on top of carburetor. If running
engine bigger than 360 with fuel injection, we may
add weight, harder tire, or increase tire pressure
to make the car competitive to a 360 engine.
Ignition ONLY!! NO MAGINETOS NO MSD BOXES!!!
will use an adequate radiator overflow tank of at
least one (1) quart capacity. It is not allowed to
be mounted in the driver’s compartment. Overflow may
be run through exhaust header as long as no water
sump oil systems will be allowed.
must exit in front of rear tires, and below top
horizontal side bar. Mufflers and elbows must be
welded on entirely approved by PDTR. Cars will be
routinely checked with a decimeter and those louder
than 100 decibels will be required to modify their
systems to lower the level of noise emissions. Muffler systems cannot be changed after decibel
reading is taken. Headers 1 5/8 in. OD, no
merge collector. One collector per side. No tri Y
Header collectors. No slip connectors. Mufflers
part # Schonfield 112535-112530 ONLY!!!
Placement – The position of the engine is up to the
discretion of the car builder, except; No rear
engine or mid-engine cars will be allowed. Engine
must be mounted between frame rails and driver must
sit behind engine.
control devices of any kind are illegal.
chargers, turbo chargers, nitrous oxide, or timed
injection will be allowed.
and Bell Housings
Any type flywheel
may be used and the car must be equipped to be
self-starting. All cars must be equipped with one
working clutch. The car must have a neutral gear.
Steel or aluminum drive flanges may be used.
must have a BLOW PROOF bell housing.
All cars must be equipped with a
self-starting, self-propelled type transmission.
Must be able to move under own power to get car
moving. One forward gear and one neutral gear in
transmission mandatory. Driver must be able to
shift gears while securely strapped in car.
No shifter rear ends or shifter drive lines. No
quick change auxiliary or automatic transmissions
allowed. Transmission must be bolted to back of
bell housing and must be mounted to outside of bell
housing. Dog type clutches can be run.
All cars running an open drive shaft must have a
complete loop of one-quarter (1/4) inch thick by one
(1) inch wide steel attached to the frame to support
the support the front end of the drive shaft. An
adequate safety chain, strap or other device must
support torque arms. Driver’s compartment must be
shielded from open drive shafts.
All open drive shafts must be painted white.
Spindles, Hubs and Shocks
Only steel front
axles, king pins and spindles with standard length ¾
ton (Wide 5) spindle snouts will be allowed. Only
standard Wide 5 hubs allowed. No billet hubs
allowed. Hubs must be interchangeable on all four
spindles. The right front hub does not need brake
steel shocks only with removable bearing or rubber
ends, No shocks that are adjustable from the
driver’s compartment allowed. No mono-tube shocks
allowed. No aluminum shocks allowed, No take apart
shocks. Coil over steel shocks allowed. No
Bilstein XVS series shocks allowed. ALL SCHOCKS
MUST BE Approved By PDTR
restrictions as to manufacturer. Quick change rear
ends are allowed. Any car running a passenger car
rear end must have conventional full-floating hubs.
No open tube rear or aluminum axle tubes are
cars must have a minimum of three (3) wheel
hydraulic brakes, one on each rear wheel. All in
good working condition.
brake rotors only; no aluminum or composite rotors
or coated are allowed.
Cars are allowed
to run proportioning valves.
Fuel and Fuel
tank must be mounted equal to or higher than the
height of the top of the rear axle tubes, in the
truck area of the car. No nylon straps allowed.
enclosed in a steel container, mounted in a safe
manner approved by PDTR. [ See Speedway Motors fuel
cells or equitant]
If fuel line is
run inside driver’s compartment, it must be steel
braided line, Aeroquip® push lock line or a line of
equivalent structure, or it must be contained inside
filler caps are mandatory.
No form of
pressurized fuel system will be allowed.
All cars must
have an easily accessible ball valve shutoff mounted
inside frame rails at right rear of car
linkage must be equipped with two return springs in
accelerator linkage will be allowed if approved by
Bumpers and Nerf
Front bumpers must not extend
beyond frame rails. All corners and edges must be
rounded. Main bumper structure must be one and
one-half (1-1/2) inch diameter round tubing.
Standards and cross bars must be at least one (1)
inch round tubing. All standards must be properly
braced. Standards must be connected by a horizontal
cross bar parallel to the main bumper hoop. Front
bumper must not extend more than twelve (12) inches
beyond the leading edge of the front tires. Single
hoop front bumpers will be allowed, but must be
between fifteen (15) and twenty-one (21) inches from
Rear bumper minimum width must
be equal to outside width of frame rails, and
maximum width no greater than rear tire tread
width. Main bumper structure must be of one and
one-half (1-1/2) inch minimum diameter round
tubing. Maximum distance from the ground to the
bottom of the rear bumper or standards cannot exceed
fifteen (15) inches. Minimum distance from the
ground to the top of the rear bumper or standards
can be no less than twenty-one (21) inches. All
vertical standards must be connected by horizontal
cross bars no smaller than one (1) inch diameter
round tubing. All standards must be properly
braced. Rear bumper must have at least three (3)
vertical standards with one in center line of
frame. Outside corners and edges must be rounded.
When bumper extends beyond the width of the frame
rails, it must be looped back 180 degrees to the
Nerf bars must not extend
beyond outside of tires. Materials for nerf bars
will be no less than one (1) inch diameter round
tubing, and rounded on the edges and corners.
All bumpers and nerf bars must
be built of round tubing and painted or plated in a
Wheels and Tires
wheels only, fourteen (14) inches wide maximum, plus
bead lock. Must be painted or plated a bright color.
bleed-offs will not be allowed.
right rear tire for the racing season will be
American Racer 33.0/13.0-15GT SD44 compound for cars that meet the
engine rule. All other cars,
American Racer 33.0/13.0-GT15 MD62 with
adjusted tire pressure. This tire must measure 14”
or less, from Point A to B, as illustrated below.
The measurement will be taken on a 14” wheel with
bead lock and the tire pressure set at 12 psi. The
tire must also have a durometer reading of 28, or
harder with a surface temperature of 150 degrees.
Any tire that does not meet the guidelines in this
section will not be legal regardless of the sidewall
plugs, Aluminum or Lexan wheel covers safely
attached approved by PDTR
must be safely and securely fastened between frame
rails and between front and rear torsion bar tubes
(or the equivalent on coil spring cars). Batteries
must be protected from the driveshaft or other
flying debris with 1/8 inch aluminum or 1/6 inch
steel if mounted in the driver’s compartment;
subject to the approval of PDTR. Standard acid type
batteries must have the positive post and entire top
covered to prevent acid spillage in the event of a
roll over. Gel or dry cell type batteries must have
the positive post covered.
2,150 cars that meet engine rule. All other
cars weight will be adjusted according to engine
size. Cars will be weighted directly from the
track, without pitting. Any parts lost during a
race may be used for weighing the car, with the
exception of fluids and weights.
weights must be painted white, identified with the
car number, and securely fastened, subject to the
Loss of any
weight on the track will result in a ten (10) point
and money penalty.
Weight will be
established with PDTR Scales
See Track Rules.
Drives Must Be 16 Years Old
- *TRANSPONDER LOCATION
Transponder will mounted on the left side rear tortion tubes.