State Park Speedway
LIMITED LATE MODEL
RULES
2008 SEASON
__________________________________________________________
Remember: These
are rules and with most rule books there may be
interpretation
issues so if a rule seems remotely open or vague please call track
or tech
official to get final interpretation. Tech Inspectors ruling is final -- NOT UP
FOR DEBATE so
please do not hesitate to ask questions.
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Master Power
Switch:
- Master Power
Switch is required and must be located in the middle of the car,
within the easy
reach of the driver and safety officials from both sides of the car.
Ignition
systems must be 12 volts.
MSD Box:
- No dual MSD
systems.
Fire Extinguisher:
- All cars are
required to carry an operable, working approved ABC rated Fire
Extinguisher (5
lb. size minimum), with a current tag, which is securely installed
within easy
reach of the driver.
Driver Side
Window Net:
- Drivers
window net is mandatory.
- Strap or mesh
type (Large mesh 12 inch minimum length) must be mounted
securely on
bottom, with seat belt type release at top front corner of window net.
- No windows
are allowed on right side of car, except rear quarter.
Harnesses:
-Head and neck
support device is recommended – For example the: HANS,
HUTCHENS,
SIMPSON.
- If none of
these are used you are required to use a neck brace.
- Five point
racing harness of 3 inch shoulder and 3 inch made-for- racing belts
are mandatory.
- Seatbelts
must be dated 3 years or newer.
- The belt
anchors must be mounted to a cage or frame member.
- Lap belt must
be anchored at a point below the plane of the seat and secure
the driver
across the hips.
- Shoulder
belts must be secured to the roll cage within 1 inch of the height of
the Shoulders.
- Seat belts
must be mounted to roll cage.
Seats:
- Aluminum
made-for-racing seats are mandatory and must support the head
from the rear.
- Aluminum
seats must have proper steel reinforcement for mounting to the cage.
- Right side
headrests are required and either a left side headrest or a Burton net
are required.
Fuel:
- Fuel must
meet specific gravity for said manufacturer. No additives of any kind.
Fuel Cell:
- Fuel cells
with rubber bladders the soft “bag style” are recommended.
(FT-3 spec.
minimum)
- All Fuel
cells must contain “full foam”
- Fuel cell
plates or fuel cell tubs are mandatory.
- Fuel cell
protector plate 1/8 inch thick steel must be mounted on outside of
frame rails.
- The plates
must cover the sides and rear of the fuel cell and be official
approved.
- Fuel cell
must be banded both ways with two straps each way with 1 inch
minimum straps.
- Fuel cell tub
must be 1/8 inch thick steel with one inch lip. Front, bottom and
rear will be
one piece.
- The top of
the box will use current 18 or 20 gauge top with 1 inch by 1/8 inch
straps with two
in each direction.
- All fuel
cells should have check ball rollover valve in place.
- Fuel cell
minimum height is 11 inches.
- The hard
plastic cells are not allowed.
Overflow
Bottles:
- Overflow
bottles/surge tanks are mandatory and must be in engine
compartment and
overflow tubes must be directed onto the outside passenger
side
windshield.
- Overflow
bottles must be securely mounted.
- No
anti-freeze allowed at any time.
- Water Wetter
or Freezer style cooling agents are allowed.
Exhaust
System:
- Exhaust must
run tight and leak free to point at least behind drivers seat and
shall exit
under the car, mufflers required.
- Decibel limit
98, taken from center of main grandstand.
- Decibel rule
will be enforced !!! No excessive backfiring from any car will be
tolerated.
General tire
statement:
- Maximum tread
width 64” center to center front or rear
- No tire
softener or tire treatments will be allowed
- The tire
softness must not be below the track’s set points of softness on the
"Official track
tire durometer".
- Any tires
found to below stated durometer reading will be confiscated by the
track.
- This is not
up for debate!!!
- Track will
determine said durometer minimum reading based on an average.
Inspection:
- All cars are
subject to inspection, anytime, before, during or after a race.
- Officials
reserve the right to disqualify cars, require changes, and confiscate illegal
parts, etc. and the decisions of the officials will be final. Any interference
with any official(s) and his/her duties will result in an automatic
disqualification. Official’s decisions will be based upon fair play and safety.
Disqualification (except weight violation) is retroactive to ALL previous events
competed in that race meet. Non-compliance with the specification outline herein
will subject the participants (owner/driver) to disqualification. Furthermore,
all non-complying components will be seized by track officials. Any driver/owner
refusing to allow the track officials to inspect a car, will loose points and
money earned and will have the car attempting to be inspected confiscated. (The
entire car, until inspection is performed with crew chief and driver present)
Owner/driver must provide tools.
Inspection
Hole:
- A 3/4 inch
diameter plug must be installed in the oil pan on either side (which
ever is easiest
to get at), in line with the second or third rod journal (the easiest
to get to),
above the oil sump area (oil level), for inspection purposes.
- The crew must
have a wrench for the plug removal. If a windage tray is used,
there must be a hole provision to
inspect.
Driveshaft:
- All cars must
have driveshaft hoops, made of heavy gauge steel, looped
around the
driveshaft.
- Driveshaft to
be painted white.
Weight:
- Any weight
(ballast) added to the car must be secured by (2) ˝ “bolts.
- Loose weights
are prohibited.
- No weighs may
be added outside the body.
- Added weights
must be painted a bright color (safety orange or white) and have
car number on
weight.
- Any ballast
that falls off a car during competition cannot be returned to the car
for determining
weight after the race.
-
Weight buy back will be $2.00/ Lb.
Car Number:
- All cars must
have a 16 inch number on both doors.
- All cars must
have a 4 inch number in the upper right-hand corner of the windshield.
-
No duct tape or spray bomb numbers.
Car
Appearance:
- All cars must
be painted and kept in good shape the entire year.
Bodies:
- Competing
models 1998 to current year, American made automobiles only.
- No sports
cars allowed.
- Minimum wheel
base 104 inches, plus or minus ˝ inch.
- Must be
mounted on frame so that it is stock appearing.
- Body
components must remain the general contours of stock components and
may not be
excessively shortened, narrowed, lengthened or deformed.
- Roof must be
centered in relation to body. Full size roof.
- No forward
air intake for carburetor.
- Back end must
be enclosed with either metal or solid type enclosure.
- Rear end of
deck lid above bumper must be enclosed, no holes.
- No part of
the tires may extend outside of the body.
- Maximum
overall width is 82 inches (measured from outside of tires or body).
-Tow hooks are
not required. If not using tow hooks chassis must be marked with
bright tape as
to useable hook points.
- Hinged trunk
lid or removable trunk lids are mandatory. Must be at least 6” x
18”. Must be
removable without using tools.
- 1/8 inch
floor and foot tunnel, aluminum seat with leg and shoulder protector,
center of seat
16 1/2 inches to 18 1/2 inches,
- No Carbon
Fiber or Kevlar products of any kind allowed. (Except the hood and
the roof)
- Ride height
will be measured with driver in the car and all appropriate racing
gear.
- 3 1/2 inch
frame height.
- 3 1/2 inch
nose and rocker height.
If not ABC must
conform to Five Star Body rules for year of manufacturer.
Spoilers:
- Maximum of 90
degrees and no bigger than 5 inches X 60 inches in length.
- No sides or
extensions of any kind.
Drivers Compartment:
- Firewall,
Floorboards and trunk area must be sealed off with 22 gauge steel or
18 gauge
aluminum.
- No fuel lines
in drivers compartment.
- Steering
shaft if not using collapsible style must incorporate two u-joints
minimum.
Windshields/Side Windows/Rear Window:
- A 10 inch
maximum vent window is allowed on either side including air vents.
- All cars must
have a full windshield, and rear window made of Lexan.
- Both windows
must be braced to keep window and body from deforming at high
speeds.
Roll Cage:
-All cars must
have a full cage welded to the frame including uni-body.
-There must be
360 degrees welds around tubing of all joints and gussets where
cut and welded,
expect where tubing is bent.
- Four or more
bars are required on driver’s side, braced at four points or more
perpendicular
to cross braces, top bar on left side 29 inches from the ground.
- Minimum O.D.
tubing of 1 3/4 (1.75) inches for roll cage.
- No exhaust
tubing allowed.
- All roll bars
exposed to driver must be padded.
- Minimum of
three left side door bars.
- Jack post
must be guarded on inside of body.
- Minimum .095
wall tubing mandatory.
- Mark Martin
foot protector bars are mandatory.
- Mandatory
that all door bars on drivers side be plated 1/8 steel on the outside
and to cover
full length of door bars..
Engine:
- 10:8 to 1
compression or less.
- Block must be
cast iron.
- Minimum CID
350 Chevy and Ford
- Maximun CID
358 Chevy and Ford
- Minimum CID
360 Mopar
- Maximum CID
369 Mopar
- No titanium
Engine Components of any kind, other than valve spring retainers.
- No 18 degree
or SB2 Chevrolet heads. - Minimum crank height
10 inches
(Measured from the center of the bolt)
- Engines must
be located so that the furthest forward spark plug is maximum 2
inches behind
the upper ball joint’s centerline.
Crankshaft:
- Steel crankshafts only.
Pistons:
- Flat top
pistons only, no part of piston may protrude above the cylinder.
- Maximum
compression ratio 10.800 to 1
(a ratio of 10.81 to 1 or higher will not be allowed)
- All
compression tests will be done with whistler.
Camshaft:
- Lifters must
rotate in there bores.
- No roller
lifters.
- Lifters must
be stock diameter
- No mushroom
type lifters.
- Inlayed cams
are prohibited - Rev kits of any type are prohibited.
- Only steel
push rods (Titanium, aluminum or graphite are prohibited)
- No solid gear
camshaft drive. Timing Chains Only.
Heads:
- Only approved
OEM Cast Iron Cylinder heads of stock configuration allowed.
- Dart Iron
Eagle Heads are allowed.
- Cylinder
heads required are iron bowtie part numbers;
14011058, 10134392,
4011034.
- The new bowtie part number 12480034 is allowed.
- Cylinder heads
must be OEM to block being used.
- Angle milling
is prohibited, valve angle must remain ˝ degree of stock and
heads must
remain stock.
- Valves,
rocker studs, head bolts and spark plugs may not be relocated.
- No polishing
or grinding permitted to ports or runners.
(Combustion chamber may be
polished, however the configuration may not be altered).
- Minimum CC of
the combustion chamber shall be 62CC.
- A three angle
valve job may be done as long as no stones are used more than
1/8 inch over
the head of the valve. (Bowl cutting is prohibited)
- Intake 2.02,
exhaust 1.6, maximum allowable valve spring diameter 1.5 inches
- Use of
titanium valves prohibited.
- All original
cylinder head identification markings must remain as original.
- Only approved
rocker arms allowed, maximum ratio 1.6 to 1.
- Shaft type
rocker arms are prohibited. Stud mounts rockers only.
- No more than
0.010 of an inch may be removed from any surface of the
combustion chamber
- The cylinder
head to block surface may be machined a max of 0.050” from OEM.
- Any evidence
of chemical treating, acid dipping, acid flowing, abrasive blasting
or other
alterations to the original as cast in form or the addition of material to the
ports or
combustion chamber will cause those cylinder head to be declared illegal.
- As in any
questionable instance you may want to get prior approval
Intake
Manifold:
- Victor Jr.
part #2975 intake only.
- May port
match intake to heads.
- An adapter
plate, with a straight bore and maximum thickness of 1 ˝” may be
used between
the intake manifold and carburetor. NO chamfering, grinding, or
drilling of the adapter plate is permitted.
- Only one flat
gasket with a maximum of .120 of an inch may be used between
intake manifold
and cylinder head , no spacer or wedge type gaskets allowed.
- No additional
material may be added to manifold.
Carburetors:
- No tapered
boosters.
- 4412 2 bbl or
4150 Series 650 CFM 4 bbl (Holley Brand Only)
- Removal of
choke (Butterfly) is the only modification allowed.
- Carburetors
must pass track inspection using track’s tech tools.
- Double return
springs required.
- Air cleaner
required.
- Air box
allowed with cowl inlet only (rear of hood).
Air Intake
- Forward
intakes are not allowed.
- Air boxes are
permitted.
- The back of
the air box must be flat.
- No devices
for directing the flow of the air into the air cleaner are permitted.
- No additives
allowed in air filter.
Clutch:
- The 5.5 inch
or bigger will be the only clutch allowed.
- Absolutely no
carbon fiber or poly clutches allowed.
- Internal
clutch style transmissions are not allowed.
- Bell housing
must have a minimum 2 ˝” hole at bottom (to allow clear view of
clutch).
Brakes:
- All cars must
have functioning brakes on each wheel.
- No more than
4 piston brake calipers.
- Fixed mounted
rotors are the only rotors allowed
- Calipers are
limited to $160.00 retail advertised price.
- No ABS units
or Brake Recirculators.
Suspension:
- Stock, coil
over or leaf allowed.
- No computer
or hand operated controlled suspension.
- No aluminum
axle tubes, no titanium axle shafts, no aluminum rotors, no
carbon fiber
rotors.
- Steel or
aluminum body shocks, non-adjustable, non- rebuildable with a
maximum
advertised retail cost of $155.00.
- No spring
loaded or rubber bushing suspension components. One shock per
wheel on any
car.
Weight
Rules:
- Total weight
is before qualifying, heat race, semi-feature or feature
- All cars must
be 60/40 left to right side weight bias.
- 2700 Lbs
Total Weight
- You must be
60/40 left to right side weight bias after the race.
- Weighing of
cars will be with driver in the car.
- ASA Late
Model Crate Motor cars that conform to ASA Late Model National
Touring
Rules or MIS ASA Late Model Rules require minimum of 2750 lbs.
Crate Motors
only. No spec motors!