2009 STAFFORD MOTOR SPEEDWAY
LIMITED LATE MODEL DIVISION
RULES
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PREFACE
The rules in this book are intended to make
racing less expensive and keep competition as equal as possible. While these
rules offer a good outline, every item cannot be covered by a written rule. If
you come up with something not covered in the rules, PLEASE ASK FIRST!
All rules in the NASCAR Rulebook will be
enforced with the following changes and additions. These rules are for Stafford
Motor Speedway only with no expressed or implied agreement with any other
speedway as to the interpretation, implementation and method of inspection by
the technical inspectors and officials.
No equipment will be considered as having been
approved by reason of having previously passed through inspection unobserved.
No car will be considered as having passed inspection for the event until
the finish is made official.
DEFINITION OF
STOCK: In
the following Rules you will see the term OEM Stock used. This means Original
Equipment Manufacturer. The parts must come on a standard production car.
Special "Off-Road" or racing parts will not be permitted unless preapproved.
No carbon fiber or titanium engine, chassis or body parts unless approved by
track officials.
ILLEGAL ITEMS - Absolutely NO removal of,
alteration of, or covering of casting numbers, part numbers, manufacturers
name, logo, insignia, etc., from any item on the race car. To do so makes a
part illegal and will be treated as such. If you come up with a rare part that
we cannot find listed for passenger car use, the burden of proof is on
you. At any time you may be asked to
remove a head, manifold or possibly an entire engine for inspection. Failure to
comply will result in the same penalty as if it were illegal.
INSPECTION - All model, engine or equipment changes or
modifications not specifically addressed in this rulebook must be submitted to
Stafford Speedway for consideration of approval. All equipment is subject to
the approval of Track Officials. Equipment will not be considered as having
been approved by reason of having passed through inspection unobserved. Any
equipment that does not conform to specifications or tolerances contained in
this rulebook or is not otherwise approved by Stafford Speedway may not be used
in competition.
POST RACE INSPECTION. Once
a car has been presented to Stafford Technical Inspectors for post race inspection
the entire car and all its parts become subject to inspection. This includes
but is not limited to items designated for inspection following a particular
event.
SCALES. For purpose of post
race inspection drivers must seated in their cars in a racing position with
helmet either on or placed in their lap. No leaning or hanging on bars is
permitted. The driver must remain in his/her car until it is removed from
the scale area.
ABSOLUTLY NO SOMKING ALLOWED
IN THE FENCED IN TECH AREA.
The rules in this book may be added to,
deleted from or changed at any time with the only notice to be given at the
event drivers meeting or via technical bulletin. All officials’ decisions are
final, non-appealable and non-litigable. Technical bulletins will be issued as
needed.
UPDATES - All changes and updates
made during the course of the season for the current rulebook will be posted to
the Stafford Motor Speedway website. This will serve as the only form of
official notification until the printing of next Stafford Motor Speedway
rulebook.
STAFFORD
SPEEDWAY TRACK RULES
NOTICE
Alcohol will not be permitted in the Stafford Speedway pit or paddock areas at
any time. The consumption of alcohol before, during or after a race event in
the pit or paddock areas is prohibited
SECTION 1-4
All NASCAR Rules will be enforced with the exception of the following
STAFFORD SPEEDWAY TRACK RULES. These rules supersede any similar NASCAR Rules and are in effect for all
auto racing events unless otherwise posted and/or announced prior to the event.
NOTE: Some Track Rules may not apply to touring
divisions.
SECTION 6
SAFETY
Stock car racing
is an inherently dangerous sport. Each Competitor assumes that risk when he or
she participates in an Event. The risk of serious injury or death cannot be eliminated
and in fact will always be present at a high level. Members are required to
advise their spouses and next of kin, if any, of this fact. Although safety is
generally everyone’s concern, Stafford Motor Speedway cannot be, and is not
responsible for all or even most aspects of the safety effort. That
responsibility instead rests with the various participants in the Event(s) as
follows.
All competitors
are obligated to inspect the racing facilities, safety personnel and equipment,
and conditions at the track on a continuing basis, before, during and after the
event. Competitors must report to Stafford Motor Speedway management promptly
any inadequacy in the facilities, personnel, equipment or conditions at the
track.
PASSENGERS are not permitted in or on a racecar at any
time. No one shall ride with any part of his or her body outside the racecar.
No riding on trailers or car haulers or pit carts anywhere on the
speedway property.
NEITHER STAFFORD MOTOR
SPEEDWAY NOR TRACK OFFICIALS CAN OR WILL BE RESPONSIBLE FOR THE ADEQUACY OF A
COMPETITOR’S RACECAR, RACING EQUIPMENT OR RACING ACTIVITY TO ACCOMPLISH THIS
PURPOSE.
SECTION 9
RACE PROCEDURE
1. All cars must go
into the infield before turning into the off-track paddock gate except at the
conclusion of the feature event. No right turn from the track to the paddock.
All cars must go through the infield road after each warm-up session and
qualifying event. After feature events cars may go directly into the paddock
area without going through the infield. The first three (3) cars in the feature
finish must report to victory lane. DO
NOT DO BURNOUTS OR DONUTS ANYWHERE ON THE RACE TRACK OR INFIELD AFTER THE
FEATURE EVENT OR AT ANY OTHER TIME.
2. The track crew, officials, wrecker or push truck drivers are not
allowed to work on race cars on the track, infield, pit or paddock areas.
3.
No car will be permitted to pass the caution vehicle unless instructed to
do so by NASCAR Officials.
4.
No car will be permitted on the track at any time without a hood.
5. All owners of cars that the oil pan cannot be removed with the
engine in the chassis must have a carb flange lift plate or other device for
the removal of the engine.
6.
At no time shall a car be jacked up without jack stands with pads being placed
under it except for normal tire changes during the race event. At no time shall a person be permitted to go
under a car without jackstands. This rule applies to both the infield pit and
paddock areas.
SECTION
9.5 HANDICAPPING Note: Some rules
do not apply to DARE STOCK Division.
All drivers must
complete a Number Application form before signing in.
For all events your car must be signed
in 45 MINUTES before the first heat race is scheduled. Once the line-ups are
posted no additional cars may be added.
If your car is signed in but does not arrive you may be credited with
two wins for handicap purposes.
When you sign in
your car state your division, assigned car number
and the driver’s name. If you bring two cars, one as a BACK-UP CAR
you must decide and indicate which car will be your primary car when you sign
in. Drivers will be handicapped on a 3-week money won system. For handicapping
purposes regular feature event purses will be used. Any driver that misses
an event will be credited with a regular feature win in money plus 1/2 feature
win in money for handicapping purposes. Any driver disqualified from a feature event will be credited with a regular
feature win plus 1/2-feature win in money for handicapping purposes. The top 18 drivers in points will be handicapped ahead of drivers not in the top
18 for the main feature only.
No current
season feature-winning driver may be posted to start higher than fifth
position in a feature event.
Note: For some events the top ten cars in
points may be considered as pre-qualified. The car must still be signed in 45
minutes before racing starts to take advantage of being pre-qualified.
All alternate feature cars will be taken
from the consolation event. If a car is disqualified from a heat additional
cars will not be taken from heats but from the consolation or ‘B’ feature.
If in the
opinion of the Racing
Director a car is not competitive on a given night, he has the authority
to deny that driver a front starting position.
For additional
handicapping information please ask handicapper for clarification.
PAST CHAMPION’S PROVISIONAL POSITION
One additional starting positions have been established which will be available to the most recent Stafford Motor Speedway Champion who has not qualified for the starting field. If a former Stafford Motor Speedway champion is not assigned this starting position, it will then be assigned to the next eligible driver who did not qualify for one of the original starting positions based on the current Stafford Motor Speedway championship point standings.
PROVISIONAL POSITIONS
Two additional starting
positions have been established which will be available to the highest drivers
in the current Stafford Motor Speedway Championship Point Standings who have
not qualified for the starting field.
ROOKIE RULES
A. Rookie Rules apply to SK
Modified®, SK Light Modified, Late Model, and Limited Late Models divisions. To
be considered as a rookie you must not have competed in more than five, (5) feature
events in this or a higher division at Stafford Motor Speedway.
B. All cars driven by rookies
must have a yellow stripe on the rear bumper. Rookies may not have another driver qualify a car for them.
C. The current Rookie of the
Year as determined from the previous season, will be awarded $100 each event
starting with the first event of the current calendar year and continuing each
consecutive event until the total award amount for each division is
distributed. To be eligible for the Rookie of the Year award the driver must
attempt to qualify. If the current Rookie of the Year as determined from the
previous season is not eligible for this award, the award will then be available
to the next highest finishing eligible rookie driver in the previous season
Rookie of the Year points standings.
SECTION 9.6 STARTING LINE-UP & RESTARTS
If a car(s) drops out of the posted starting
line-up, all cars in that row will move straight up to fill the spots in all
events. No crossing over. If a restart occurs with ten, (10) laps or less to the end of the
feature, all lapped cars will be removed from and started behind the lead lap
cars in the restart line up.
SECTION 10.4
YELLOW & RED FLAG/LIGHT RULE
SECTION 10.8 CHECKERED FLAG - RACE END
All FEATURE
races will end with a GREEN, WHITE,
CHECKERED unless in the opinion of the officials the track is no longer
safe for racing.
SECTION 11.1 OFFICIAL SCORING
SK Modifieds®, Late Models, SK Light Modified and Limited Late
Models must have a scoring transponder assigned and attached to the racecar
for practice or racing. (Please see installation specifications on page 7).
All competitors will have 15 minutes after their feature event is announced
and posted to file an inquiry. Once the inquiry is satisfied the official
finish will be posted. No changes will be made once the finish is official.
Transponders are required to be on the car and working
for all race events including practice
sessions.
FOR
SALE SIGNS
For Sale Signs are not permitted on cars in feature events.
BACK-UP CARS – Separate number registration is required for back-up cars.
No cars competing in the same division
will be allowed in the paddock area with the same number.
INFIELD PITTING
1.
Infield pitting will be used for all SK Modified and Late Model features.
All crewmembers that go to the infield pit area will be required to
have a NASCAR license. During
race conditions, any crewmember who steps into the car servicing area must
wear a helmet All people on the infield must wear long pants with a minimum
short sleeve shirt and closed toe footwear at all times. You must pit in your
proper pit stall.
2.
NASCAR pit rules will apply including the amount of
crewmembers over the wall, etc. A stop & go official will be at the exit of
pit road only. You may not enter pit lane until the pace car picks up the
leaders and the pit road is opened. You may pull up to but not pass the pace
car.
3.
No
crewmember may go into the pit box until the car has come to a complete stop.
4. Pit stalls will correspond to the starting positions of the
feature line up.
5. The speed limit on pit road at all times including
qualifying and practice will be 25 MPH.
Speeding in the pits may result in
disqualification.
6. Absolutely no fueling of cars on the infield. No gasoline containers will be
permitted on the infield.
7. Wreckers and push trucks are not permitted to bring pit
materials to the infield to set up your pit stalls.
8. All
cars out of the event must go behind the wall on the infield.
6- 4 PERSONAL SAFETY EQUIPMENT
See NASCAR WEEKLY SERIES
RULE BOOK
6- 4-1 HELMETS- HEAD AND NECK RESTRAINT DEVICES
See NASCAR WEEKLY SERIES
RULE BOOK
6- 4-2 SEAT BELTS
See NASCAR WEEKLY SERIES
RULE BOOK
6- 4-3 SEATS
See NASCAR WEEKLY SERIES
RULE BOOK
SCORING
TRANSPONDER LOCATION
Transponder mounting brackets will be installed on the inside (or outside) of the right rear frame rail. The round post of the bracket must be on top and the square tab on the bottom flush with the lower edge of the frame rail. The bracket must be mounted with it’s center line exactly 12” to the rear of the rear axle centerline and must be completely vertical to the ground. Keep exhaust directed away from transponder.
Transponders are available from
AMB, US, Inc
32 Highlands Parkway, Suite 104
Smyrna, GA 30082
Tel 678-816-4000 Fax 678-816-4001
AMB, US, Inc
www.amb-it.com
1-678-816-4000
Master Frequency List 1-207-571-9165
Racing Electronics:
www.racingelectronics.com
1-800-272-7111
Hoosier
Tire East
1-860-646-9646
Dave
Lind Racing
1-800-562-9527
Reliable Welding & Speed
www.reliableweldingandspeed.com 1-888-225-7223
New England Racing Fuel
www.newenglandracingfuel.com 1-860-673-9555
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Track Frequency Channel #1 SK Modified®, Late Model 464.50000
Track Frequency Channel #15 SK Light, Ltd. L.M., D.A.R.E. Stock 461.13750
LIMITED LATE MODEL DIVISION
ALL 2009 NASCAR WHELEN ALL AMERICAN SERIES RULES FOR THE LATE MODEL STOCK
CAR DIVISION WILL BE ENFORCED FOR THE STAFFORD LIMITED LATE MODEL WITH THE
FOLLOWING CHANGES AND ADDITIONS.
DRIVER ELIGIBILITY - All drivers must have a NASCAR
CHD (Charger Division Driver) or higher license. Drivers competing in the
LIMITED LATE MODEL division at Stafford Speedway will not be permitted in
SK MODIFIED®, LATE MODEL, LIMITED LATE MODEL, or D.A.R.E. Stock division on
the same event date.
20F- 1 COMPETING CHASSIS - American made chassis with a minimum of 108"
wheelbase as factory listed for that year and model. No Firebirds, Camaros,
Mustangs or two passenger sports cars. No convertibles, station wagons, or
using of their frames for other models. Body may be different from frame and
engine but engine and frame parts must be from the same corporate line (i.e.
GM, Ford, Chrysler). If you are in doubt about the eligibility of a make or
model, CHECK BEFORE YOU BUILD IT!
20F- 2.1 BODIES
— All bodies must be stock for frame being used or NASCAR approved. See NASCAR
Rulebook Late Model Stock Car Division for approved bodies and additional
body specifications. Original dimensions of all bodies must remain as manufactured,
except for changes, which may be necessary for tire clearance All Limited Late
Model bodies will be subject to the A-B-C body type measurements. Track officials
will use the A-B-C type templates to insure the measurements from car to car
are the same. All measurements from the NASCAR Rule Book and the A-B-C book
are the same. Only the location of the following two measurements nose height
and rear overhang and the letters of the measurements themselves are
different. Tolerances
will be built into the templates from the manufacturers. All vertical measurements
from either book will be plus one (1) inch. With the exception of the 18 1/4
“ min deck lid length all other measurements that say minimum or maximum shall
be considered as exact for this division. Any other models must be approved
by Stafford Motor Speedway. No aluminum or poly
body parts will be allowed..
Older Late Models and Limited Late Models with
higher roof heights will be adjusted according to the rule. The A-B-C Rule
Book will be made available to all 2009 competitors.
All vertical body measurements will be done by ride
height.
20F- 2.2 OVERALL CAR
WEIGHT - All specified weight requirements will be with
the driver. The minimum weight at all times will be 3100 pounds. No car will
be allowed to have more than 53.0% of the total weight as the left side weight.
All weight must be bolted to the inside of the frame rail and above the lowest
edge of the frame where weight is mounted.
SPEC MOTOR CARS- will be allowed to weigh 3000 pounds
with 54% left side weight.
20F- 2.3 ADDED CAR WEIGHT - Added weight must be in block form of no less
than five (5) pound blocks (no pellets) of magnetic steel or lead only. Added
weight must be securely bolted to the frame rail and painted white with the
car number stenciled in black. No added weight will be permitted inside the
driver’s compartment. Weight must be welded in a box or attached with two
or more grade ‘8’ bolts minimum 7/16 diameter.
20F- 2.4 CAR WEIGHTS
AFTER RACE - Nothing may be added to or taken from the car
to make total or left side weight. Gas, oil or water may not be added. Wheels
and tires cannot be changed, but an amount equal to one half of one percent
(.5%) of the gross weight will be added for loss in weight due to race wear.
20F- 3 DETAILED BODY
REQUIREMENTS — Steel aftermarket replacement bodies may be
used in place of stock. Hood and roof only may be made of fiberglass. Steel
front fenders must be replaced with STEEL or POLY fenders ONLY. Fiberglass
front fenders are not permitted. Body must be, straight and stock, mounted
in the stock location on the frame. No lowering, chopping, channeling or streamlining
of any body parts or roof. Stock window openings must be maintained. No aluminum
or fiberglass replacement parts unless noted elsewhere in the rules. All exterior
chrome trim ornaments, outside mirrors and door handles must be removed. Replacement
body parts must meet NASCAR templates. No body skirts or lower body rocker
panel flares. Rolled under rocker panels are recommended. NO REAR SPOILERS.
20F- 3.1.1 FRONT AIR
DAM - Approved air dams must maintain 5” ground clearance.
20F- 3.2 GLASS
- All glass except windshield must be removed. No side, quarter panel, or
rear windows allowed. Full windshield is required made of clear glass or 1/8"
polycarbonate glass. Windshield must maintain stock angle and fit template.
Windshield must have two safety straps on the inside and out. No cracked windshields
allowed. All lights and lenses must be removed from the car. Headlight and
taillight openings must be covered. Headlamp and tail lamp decals are recommended
for aesthetic reasons.
20F- 3.2.3 SIDE WINDOW
GLASS/WINDOW SCREEN — All door window glass must be removed.
A nylon window screen must be installed in the left side door window opening.
And be positioned to cover the entire window opening. The window screen must
be rib type, made from minimum ¾ inch, maximum one (1) inch wide nylon material
with a minimum one (1) inch and a maximum 2-1/4 inches square opening between
the ribs. The minimum window screen size must be must be 22 inches wide by
16 inches high. All window screen mounts must be a minimum ½ inch diameter
solid steel rod on the bottom and a minimum one (1) inch wide by 3/16 inch
thick flat steel or a minimum ½ inch diameter solid steel rod on the top,
with mounts welded to the roll cage. The window screen, when in the closed
position, must fit tight and be secured with a lever-type quick release latch
acceptable to Track Officials. The lever must be secured by a detent ball
in the lever and may be supplemented by Velcro® fastener only — pins or clips
will not be permitted. The latch must be mounted at the top in the front to
roof bar (#3) release from the inside.
20F- 3.2.5 REAR VIEW MIRROR
- One (1) rear view mirror that must be mounted at the top of the windshield
no larger than 8”X 2”. No multi-image or side mirrors. Drivers wearing approved
head and neck restraint devices may use one (1) spot mirror that must be mounted
to the #10 A bar. The Spot Mirror must be a maximum diameter of three inches
(3”.)
20F-
3.3 DASH BOARD - Stock unit may be removed but must be replaced
with magnetic sheet steel, a minimum of 24-gage (0.025 inch thick), of similar
design the full width of the body.
20F-
3.4 FIREWALLS
A.
Front firewall must be in stock location with all holes covered using magnetic
sheet metal a minimum of .031" thickness. Aluminum is not permitted.
The front firewall must extend down to the top of the frame.
B. Rear firewall must be made of minimum .031"
magnetic sheet metal securely installed over the rear seat back brace and
top shelf or “hat rack”, completely closing off the trunk compartment.
C.
The top shelf or “hat rack” must be positioned horizontal and approximately
level. At a maximum of 30-inches from back to front, the top self or “hat
rack” must angle downward approximately 30-degrees and continue downward attaching
to the #6 bar or lower.
D.
The stock floor pan may be replaced with minimum .031" magnetic sheet
metal bent similar to the original configuration. Any part of the passenger
side floor pan higher than the to of the frame rail is not permitted. The
passenger side floor pan may come straight across from a maximum height of
the top of the frame rail to the transmission tunnel.
E.
The transmission tunnel shape may be altered however must remain in original
center position (equal distance from frame rails to either side of the tunnel)
and within 1-inch of original height. Additionally the transmission tunnel
must remain within 2-inches of stock width. The floor must be sealed
to the bottom of the door on both sides of the car. The rear
seat area must seal to the rear firewall.
F. Door bars may not be covered on the interior
of the car and must be visible for inspection from the inside of the car.
G. Absolutely no closing in of passenger compartment
next to or behind driver.
20F-
3.5 DOORS - All doors must be welded or bolted shut. External
nerf bars may be used if made of no larger than 1” round tubing. Bars must
be “skin” tight and painted the same as the body panel it is attached to.
Bars must be at centerline of the front and rear tire. No bars behind rear
wheels. Ends must be turned into and go through the body or bolted at the
end of the bar with a flush bolt that goes trough the body to a interior bar
of the same length as the outside bar to prevent hooking. The outside bar
must have the ends rounded. No spreading or narrowing of body. Replacement
doors must have stock contour. No slab sided cars.
20F-
3.6 FENDERS - Full front and rear quarter panels are required.
Inner fender wells must be removed from front fenders. Fender and quarter
panel location, dimensions and angles must remain stock. Wheel openings may
be trimmed a maximum of 2" from the outside edge of the tire for clearance.
20F-
3.7 GRILLES - Grill openings must remain stock for body run.
Stock unit may be replaced with screen between headlight doors and stock grill
frame. No car will be permitted to run with an open front grill area.
20F-
3.8 HOODS, ROOF
A.
Hoods may be made of steel, aluminum or fiberglass. A maximum of two-inch
(2”) nonfunctioning scoop is permitted. The hood and scoop must seal tight
to the fenders and windshield. Hood must be in place at all times
B.
Hood must be held closed with quick release pins. Hinged hoods are permitted.
C.
No holes or functioning air scoops allowed. Hoods must lay flat.
D.
No openings for air to the carburetor or breather are permitted.
E.
All roofs must be the same size and shape of a production roof. Steel or fiberglass
roof permitted. Roof panels must be permanently mounted in the stock position
the same as a stock production roof for the make and model car being used.
20F-
3.9 TRUNKS - The rear deck lid must maintain the same dimensions,
angles and bodylines as the stock production car. Lid may be held closed with
quick release pins. Reinforcing inner panels may be removed. All openings
in rear panel must be covered. Floor of the trunk area must be removed. Complete
taillight panel and bumper covers must be run. No flat back cars. Taillight
decals are recommended.
20F-
3.10 BUMPERS/BUMPER COVERS — The bumpers/bumper covers must be acceptable
to Track Officials and meet the following requirement:
A.
The front and rear bumpers and/or bumper covers must be installed in the same
location as far as height, width and depth as a stock factory production bumper.
B.
Magnetic steel tubing must be used to reinforce the front and rear bumper
covers. The tubing must not be exposed and must remain behind the bumper covers.
C.
The front and rear bumpers/bumper covers must be solid. Holes will not be
permitted.
D.
All front and rear bumper covers must be painted the same color as the car
including bolts and rivets
20F-
3.11 IDENTIFICATION — See NASCAR Rule Book. Roof numbers must
read from passenger’s side of car. Stafford Motor Speedway reserves the right
to assign number colors.
20F-
3.12 BODY TEMPLATES - Templates may be used to check any cars,
which have questionable, body dimensions or configuration. Decision of Track
Officials is final.
20F-
4 GENERAL NON-SPEC ENGINE REQUIREMENTS - Engine must
be OEM cast iron V8 production block, heads and intake manifold. The ONLY
approved engine for GM is the CHEVROLET 350, FORD is the 351 CLEVELAND
or WINDSOR, MOPAR is the 360. No deflashing,
grinding, welding or painting of any internal area. Maximum overbore for Chevrolet
and Ford is .045". Maximum overbore for MOPAR is .030”.
OP 20F- 4 GENERAL OPTIONAL
SPEC ENGINE REQUIREMENTS — As an option for the
Limited Late Model division the GM Performance Factory Sealer Circle Track
Crate Engine is permitted.
GM Part Number 88958602
GMR 350/350 Circle Track Engine.
All engine seals must
remain intact and un-tampered with. Any service work requiring the removal
of any seal bolts must be scheduled with, and approved by Stafford Motor Speedway
BEFORE the seal bolts are tampered with. Tampering with seal bolts will result
in severe penalties and loss of eligibility of the engine to compete in the
Limited Late Model division.
Stafford Motor Speedway
approved service centers for the GM Performance Factory Sealed Circle Track
Crate Engines are.
RAD Auto Machine Ludlow Ma. 1-413-583-4414
Horsepower Engineering
Ellington, CT 1-860-871-2020
OP 20F- 5 DETAILED OPTIONAL
SPEC ENGINE REQUIREMENTS
OP 20F- 5.5.4 OIL PAN
— The only approved oil pan for the GM Performance Factory Sealer Circle Track
Crate Engine (GM Part Number 88958602) is the factory OEM GM Part Number 25534353
oil pan. Additionally the oil pan seal bolts must remain in tact. Tampering
with seal bolts will result in severe penalties and loss of eligibility of
the engine to compete in the Limited Late Model division.
OP 20E- 5.6.1 VALVE SPRINGS — The only approved valve springs for the GM Performance
Factory Sealer Circle Track Spec Engine (GM Part Number 88958602) are factory
OEM GM Part Number 10212811 springs. Additional valve spring devices of any
kind are not permitted.
OP 20E- 5.7 HARMONIC
BALANCER - The Harmonic Balancer must be factory OEM GM
Part Number 12555879. Alterations of any kind to the factory OEM GM Part Number
12555879 Harmonic balancer are not permitted.
OP 20E- 5.8.2 PUSH RODS — The only approved Push Rods for the GM Performance
Factory Sealer Circle Track Spec Engine (GM Part Number 88958602) are the
factory OEM GM Part Number 14095256. Alterations of any kind to factory OEM
GM Part Number 14095256 Push Rods are not permitted. The addition of guide
plates or any other Push Rod devices of any kind are not permitted.
OP 20E- 5.8.3 ROCKER
ARMS — The only approved rocker arms for the GM Performance
Factory Sealer Circle Track Spec Engine (GM Part Number 88958602) are factory
OEM GM Part Number 10089648 Rocker Arms with a 1.5 ratio. Additional rocker
arm devices of any kind are not permitted. Additional oiling devices of any
kind are not permitted.
OP 20E- 5.8.4 ROCKER
ARM NUTS — The only approved rocker arm nut for the GM
Performance Factory Sealer Circle Track Spec Engine (GM Part Number 88958602)
is the factory OEM KOOL NUT KIT GM Part Number 25534352. Additional Rocker
Arm Stud support or strengthening devices of any kind are not permitted.
OP 20E- 5.10.4 CARBURETOR
ADAPTER
A. A track approved adapter
plate must be installed between the intake manifold and the carburetor. Alterations
of any kind to the track approved adapter plate are not permitted. The only
track approved adapter plate is the CANTON RACING PRODUCTS part number 85065A
aluminum adapter.
20F- 5 DETAILED NON-SPEC ENGINE REQUIREMENTS
A static compression ratio of 9.5 to 1 will be strictly enforced.
20F- 5.1 ENGINE LOCATION -
A. Engine must be in
the stock location for a V8 in the chassis being run. Stock engine location
is deemed to be when the distance between centerlines of the forward most
fuel pump to engine block mounting bolt and the upper idler-arm to frame mounting
bolt measures 8.75” inches +/- .25” inch so long as said bolts are deemed
to be in stock, un-altered, factory locations.
B. The front, centerline of the crankshaft must be
no less than 12 3/4 inches from the ground with the car’s frame set on five
inch (5”) high blocks under all four outer corners of the frame.
20F- 5.5 PISTONS/RODS
NON-SPEC
A. Any flattop three
(3) ring round aluminum piston with three (3) rings in place will be permitted.
Valve relief’s for valve clearance only may be cut into the pistons. All three
rings must be of magnetic steel. No portion of piston may protrude above the
top of the block. No
self-centering connecting rod type pistons. No self-centering connecting rod
type pistons. (Rods must align off the crankshaft rod journals). All three
rings must be of flag magnetic steel. (No Dykes type rings).
The minimum ring thickness
permitted is as follows:
Compression rings .043
inch Oil ring assembly 3.0 mm
B. Only magnetic steel
piston pins maintaining a minimum diameter of .0927 inch are permitted. They
can only be contained by bushings only. (No bearings of any type) Full floating
pins are permitted. No coating of wrist pins. (DLC, etc.).
C. Piston pinholes must
be in a fixed location in the piston and connecting rods.
D. Only two-piece insert
style connecting rod bearings are permitted.
E. Only solid magnetic
steel stock type connecting rods are permitted. Hollow beam connecting rods
are not permitted. All after-market connecting rods must be steel sportsman
rods. Only normal engine balancing and the use of after-market bolts and nuts
are permitted. No deburring, deflashing, polishing, grinding or lightening.
Billet connecting rods are not permitted. All rods must be stock length and
the same length throughout the engine.
F. Titanium
and stainless steel connecting rods are not permitted
G. Minimum weight for
piston, pin, ring, bearing and rod assembly is 1075 grams.
20F- 5.5.4 OIL PAN
NON-SPEC - Windage trays of any type will be allowed. Oil
coolers are allowed. Aftermarket oil pans allowed, but must be steel and keep
stock appearance. Approved aftermarket pans for Chevrolet are MOROSO part
# 21804, 21807, 21808 or Canton part # 11-200, 11-200m, 11-200t. A stock oil
pan may be modified to MOROSO or Canton specifications.
20F- 5.5.5 OIL PUMP
NON-SPEC - No dry sumps, external oil pumps or tanks or
accu-sump systems allowed. Only OEM type in the pan oil pumps. No pumps of
any type may be used in the evacuation system.
20F- 5.6 CYLINDER HEADS
NON-SPEC:
Stock OEM cast iron heads only. Chevrolet may use aftermarket “World Products S/R” (stock replacement) series heads, bare casting part# 043600 and part# 043600-1. Ford Cleveland must use 2 BBL heads only. Ford Windsor may use the cast iron “World Products Windsor Jr.” cylinder head, bare casting part# 053030 and casting part #053030-1 with 1.94” intake valve and 1.60” exhaust valve. Head studs are not allowed. All Chevrolet heads must be factory listed for 76 CC’s or greater. Heads may not be angled milled. The only modifications ALLOWED will be the installation of valve guide sleeves and milling of the gasket surfaces, however angle milling, changing the angle of the head gasket surface in relationship to the rest of the head, is not permitted. Additionally altering the position or angle of the valve guide is not permitted. The addition of screw-in studs, guide plates, valve spring seats, optional valve seals, Poly-Locks or jam-nut devises are permitted. Machining of valve guide bosses for seals only. IMPORTANT -All heads must have a minimum of 72 CCs<