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35 Raceway
2024 Super Dirt Truck Rules
General
Information
The following
specifications have been prepared by 35 Raceway Park as guide lines for
the construction of the Dirt Truck Division. No warranty or safety is
expressed or implied as a result of this publication of rules. These
rules are intended as a guide and are in no way guarantee against injury
or death to participants, spectators, or others. Anything not covered by
these specifications should be approved by the track officials and
placed in writing. Continuous developments in auto racing and technology
may mandate changes in these specifications. However, it is our intent
to enforce and police these rules throughout the season,
This division was developed
for the fun of racing in a low cost fashion. This requires limits in
various areas to keep competition equal and fair for all participants.
In order to accomplish this, if it doesn't say you can, don't! With help
and consideration of the participants, this can be accomplished. Try to
live within spirit of the rules. If you have any questions, please
contact track officials before you are found Non-conforming (illegal), weekly participants competing for
Championship points at 35 RP must conform to all 35 RP truck rules.
Eligibility: The only
trucks to be used will be Chevy S-10, GMC S-15, Chevy Colorado, Ford
Ranger, and Dodge Dakota. Any 4 cylinder 2600LB & any steel block &
head V6 2800lb truck both open engine rules, the GM 350 block must
adhere to the following rules as written, all trucks must follow all
safety rules.
Engines: Any 4 cylinder, &
any steel block & head V6 both open rules. or
V-8 GM 350 block max 364 cubic inch No aluminum heads or blocks.
Engine may be used in any truck. (For example a Chevy in a Ford
truck) All engines used in competition must be able to be used in a
conventional passenger car without alterations. Engine setback, #1 spark
plug will be no farther back than the center of ball joint. Max 175lb
compression as checked after race.
Pistons dish or flat top pistons. No gas ported pistons only.
Camshaft max lift .450 hydraulic non roller lifters, Must have
OEM style stamped steel rockers or may steel or Aluminum use roller tip
and /or full roller rocker must be stud mount. 7/16” max diameter rocker
studs. Head must be
steel only with stock diameter valve single coil valve spring. (Example:
Chevy 1.260). No beehive or
barrel springs. No stud
girdles. no porting or polishing (This is to include gasket matching and
bowl blending.), no beehive springs, No spacers between heads and
intake. Stock LS Engine package The pre 2015, 4.8 or 5.3 LS GM Steel Block STOCK, aluminum head, Production Engine is allowed with the following rules. 1 there is absolutely no clean-up this is a stock bore stroke economy engine package engine should cost no more than $600 or less at a salvage yard. 2 There is an engine claim for anyone running a LS therefore claiming driver must be running an LS engine, claimed driver may at his sole discretion take $250 and the claiming drivers Long Block. The outright claim is for $750 for bare long block (oil pan to heads) with cam crank sensor, NO intake, headers, water pump, ignition or wiring. Failing either to be claimed or exchanged you are out for next 4 events, track has right to claim or exchange at its sole discretion.
3 No Swapping of heads blocks camshafts
from one LS to other LS all casting numbers must be legible not tampered
with on all components all components must be same size and
configuration as it came from GM, if we cannot read them you will be
DQ,d (cam must be proper lift for the casting number) NO SWAPPING NO
CUSTOM CAMS ECT
Exhaust: Headers are allowed. Exhaust may not protrude past side sheet
metal. Cooling:
Radiators must be in front of engine. Shroud must cover upper 180
degrees of the fan. Shroud must be metal and completely cover fan.
Electric fan is allowed. No oil coolers allowed in driver’s
compartment.
Ignition: No trigger type and / or crank trigger type: MSD or HEI
Distributor (OEM) only is permitted. **ALL
V8 ENGINES must run a MSD 6200 rpm rev limiter APPROVED Ignition
boxes MSD 6425, MSD64253, MSD 6420, MSD6430, MSD 6427, Engines Utilizing
HEI must run rev control MSD8727CT. NO OTHER INGNITION SYSTEM MAY BE
USED.
All rev controllers (limiters) must be out of reach of the driver and
sealed in place with clear sealant on both a chip or dial knobs rpm
limiter will be checked for any infraction or manipulation of these
ignition rules includes but not limited to missing sealant
busted/cracked sealant rev limit higher than 6200 RPM ** Track may
exchange any Ignition box they believe to be altered tampered with or
non-conforming with same model, if in fact box is non-conforming to the
rules 1st offense: any driver exceeding 6200 RPM will be disqualified
for the night and lose all points. you will also be suspended from
competition for 4 weeks. 2nd offense suspended for 1yr from date of
offense before eligible to participate again. A driver caught with a
tapered, altered or non-conforming ignition box will be suspended for
1yr from date of offense before eligible to participate again.
Transmission: Any type
transmission is allowed if using a stock clutch & flywheel must use full
Steel Racing Blow proof Safety Bellhousing.
Front pump drives ok. Bert or Brinn type
transmissions are allowed. No quick change transmissions.
Appearance: Stock factory
steel bodies, complete including tailgates, No extended cab bodies on a
regular cab frame. We will be using the top of bed side to measure for
cab set back. Example if your truck comes with a 6 ft bed the rear wheel
should be at the 3ft mark to the center of the wheel. We are only
allowing a 4 inch set back. Bed must retain factory rake; meaning that
it can't be raised up in the rear; factory body lines must stay factory.
(Still must look like a truck at the end of the day)
Steel or aluminum body
sides are allowed. Factory body must keep 4 inches from bottom of
window. Inner panels may be
removed. Door window opening must remain stock with complete door including
factory door headers.
No hood scoops of any kind. This includes any factory options or
level-up vehicles. Hood can be cut to
allow for air cleaner if air cleaner sticks above hood it must have a
shield around front half the height of air cleaner. Hood crown must remain factory stock. No raised
hoods of any kind! Stock
bumpers may be reinforced. No visible crash bars, front or rear.
Front bumper: Racing rubber / plastic or Stock truck nose is
allowed. Rear bumper: Rubber or
plastic tail piece will be allowed. Wheel
opening flanges must be turned inboard.
Stock appearing rocker panels, (size & location). No body-side
skirts below rockers. No rear skirts. This measurement from the top of
box to bottom of rocker must be no longer than 32 inches.
Interior can have boxed in cockpit regardless of
All trucks must be neatly painted and lettered. The truck must
have a number of no less than 18 inches on each door and roof.
Badly damaged trucks will have to be repaired. Any sharp edges
must be repaired or made smooth.
Windshield visor is allowed. Can be no more than 6 inches in
width, and it must be mounted at the extreme top of the windshield
opening. This will be measured at the middle of the windshield down.
No body panels can have hinges
to allow air to escape. No
Sail panels on the rear down tube bars allowed.
Bowing of the body to cover the tires is allowed. You cannot
alter the top of the cab to achieve this.
You can run a factory hard plastic grill. Any aftermarket
grill, aftermarket rubber nose, or make one out of aluminum.
Spoilers: Spoilers must be
mounted to rear of the bed, Blade must be flat a maximum of 8 inches
tall. No wicker bill allowed any spoiler angle is ok, may not extend
past sides of the bed.
Spoiler sideboards will be
no larger than 100 sq. inches. Only 3 supports will be allowed.
Chassis:
Stock truck frames must be used (The CRS trucks may race!),
Frames must remain stock width. Frame supports may be added. (Square
tubing, Plating of the frame)
Frame lighting holes NOT allowed.
Frame rails must remain stock front to rear.
Lowering of engine is allowed may not remove the lower portion of
factory cross member. Frame must be plated in if material is removed.
Notching frame to lower seat is ok. However must keep bottom 2
inches of factory frame rail and must have square tubing put in this
area to support Frame.
Roll cages will be 6 point design with 1 1/2 inch minimum diameter with
.095 wall tubing with a minimum of 3 bars in each door drivers side 3/16
thick min solid girth plate required top cage bar to bottom full side of
cage. Each door bar must be of single piece construction. Cage set back
is determined by the bed: Please see description
in
appearance. Saddled tubing joints recommended. If not, gussets
are required. Roll
cage offset is allowed on right hand side only.
All V8 trucks will have a
minimum weight of 3000 lbs. V6 trucks 2800 lbs, 4 Cylinder trucks 2600
lbs All weights must be painted white with truck number and securely
fastened. If a lot of weight must be added to achieve this weight it
must be added to inside the 4 wheels. We understand weight percentages
want to be achieved but adding 600 lbs to the left rear on top of what
you have already just isn't safe. If your weights come off you are done
for the night.
Chevy S-10/GMC S-15
Colorado 1st gen 03-12 Dodge Dakota
Ford Ranger
Short Bed
108”
111”
112” 108”
Long Bed
118”
120”
124” 114”
Ext. Cab
122”
126”
131” 125”
Truck wheel base can be no
shorter than 108" for only the standard cab short bed trucks. This rule
doesn't apply to long bed or extended cab trucks; they will be shorter
than factory when aftermarket leaf springs get added by roughly 4
inches. Factory front mounting location must be used and cannot be
altered from factory stock location.
Suspension, Springs, and
Shocks: Front: Racing coil springs may be used with a minimum of 3 inch
diameter - front only. Coil overs are allowed on the front end only. You
can the 5 inch springs if you choose. Shocks
can be mounted thru upper A arm, frame can be notched for shock
clearance but must be plated (boxed back in) or shock can be mounted on
outside of A arm.
Weight jack bolts will be allowed on front coils only.
A-arms may be tubular, upper A-arms may be notched for weight
jack bolts. Upper A-arms must have a connected cross shaft. Upper A-arms
may run parallel to the frame. Lower A-arms must be factory and may have a maximum extension of
2 inches. Extension must be straight out. Lower A-arms must be mounted
in factory mount Any
factory spindle may be used. No aftermarket or tubular spindles may be
used. No wide 5 hubs. Rear
leaf springs must remain in stock locations, using factory front mount.
Rear sliders or shackles are allowed. Shackles must be mounted in
factory location. If rear sliders are used they may be placed within 6
inches of factory spring mount. Rear spring cannot mount any higher than
bottom of the frame. Aftermarket rear leafs are allowed. No rear
coils. Solid, pull bar, lift bar only
no spring, shock, or biscuits, of
any type. No four
link or Z link type suspensions allowed.
Shocks: any smooth steel
welded bearing Racing shocks may be used, only one shock per
wheel. $150.00 claim per shock by any one in feature, or track.
Oil shocks can be adjustable.Coil overs allowed on front end
only. NO remote reservoir and No Schrader Valves
No Gas, bulb, remote reservoir
shocks. No coil
overs allowed on rear corners of the truck.
Steering: Steering must
remain stock to frame. Aluminum tie rods are allowed.
A minimum of 2 universal joints in steering shaft. Steering
quickener may be used. Any brand truck can install a rack and pinion if
you so choose
Rear End:
ANY factory solid rear end allowed Rear end may be locked. Floater rear end
may be used. quick change rear ends allowed. No aluminum. No wide 5 hubs.
Maximum rear track width of 74 inches as measured from outside
sidewall of left rear tire to outside sidewall of right rear tire. Transponder is it to be mounted to right side axle tube. Track
officials must be able to get to it to change out if needed. Rear end
must mount to spring pin location. Must have (2) U-bolts, or (4) grade 8
bolts, on each side holding rear end to the springs. Rear end can be
fully floated if you so choose. Drive shaft must be painted white.
Brakes: Must have 4 wheel
working brakes, Dual master cylinder/ pedal assembly with brake adjuster
may be used. Disk brakes on rear end are allowed. Aluminum calipers are
allowed on the rear end only!
Wheel and Tires: Any 8
inch by 15 inch racing type steel wheel is allowed. No aluminum wheels.
Bead locks are allowed. Any brand 8 inch racing or street tire is
allowed. Wheels must pass a Go/No Go gauge. A little leniency will be
allowed due to different manufactures of bead locks. No tire bleeders
allowed.
MISC:
The Attica, Fremont & CRS trucks
are allowed must use their rules and tires no mixing of rules ALL must
conform to the Ignition rule max 6200 rpm. And Although they can come
and compete these trucks will not be running for points and we will
modify rules as needed for these trucks if found to have performance
advantages!!
IE: Weekly participants competing for Championship points at 35 RP must
conform to all 35 RP truck rules!
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