These rules are in effect as of July 15, 2007. This publication supersedes all previous I-10 SPEEDWAY rules and rule updates.

I-10 SPEEDWAY reserves the right to alter or amend the rules and regulations in the interest of safety, cost control, and/or fair competition. ADDING WEIGHT, REQUIRING THE LOSS OF LEFT SIDE PERCENTAGE, OR REQUIRING A CARBURETOR RESTRICTION PLATE ON A VEHICLE WILL BE TOOLS USED BY I-10 RACEWAY OFFICIALS TO MAINTAIN FAIR COMPETITION. It is the responsibility of each competitor to read and understand the contents of these rules. If there is a disagreement or dispute regarding the meaning or application of these rules, the decision of the I-10 SPEEDWAY Race Director shall prevail.

No expressed or implied warranty of safety shall result from publications of or compliance with these rules and/or regulations. The rules and/or regulations set forth herein are designed to provide for the orderly conduct of I-10 SPEEDWAY racing events and to establish minimum acceptable requirements for such events. These rules shall govern the condition of all events, and by participating in these events, all participants are deemed to have complied with these rules.

No pretense is made for having designed a foolproof set of rules and regulations. The spirit and intent of the rules is the standard by which I-10 SPEEDWAY events will be governed. The I-10 SPEEDWAY Race Director is authorized to decide if an equipment change or modification is an attempt to circumvent these rules. The I-10 SPEEDWAY Race Director can and will disqualify a race car in violation of the spirit and intent of these rules. If this rulebook does not specifically state that you can alter, change, or otherwise modify something on your car, you should consider it a violation of these rules. No part is deemed to have been approved by I-10 SPEEDWAY by passing through prior technical inspections.

The Race Director shall be empowered to permit reasonable and appropriate deviation from any of the specifications herein or impose any further restrictions that in his opinion do not alter the minimum acceptable requirements. No expressed or implied warranty of safety shall result from such alteration of specifications. Any interpretation or deviation of these rules is left to the discretion of the Race Director. His/her decision is final.

These rules are intended as a guide for the conduct of the sport and are in no way a guarantee against injury or death to a participant, spectator or official. All participants, guest and crew members fully understand that racing is inherently dangerous and that they are exposed to risks of death or serious bodily injury. The participants, guest and crew members voluntarily assume these risks.




A. Any 1968 or newer sedan. No Station Wagons, Convertibles, Pick-Ups, Jeeps, etc.

B. All cars must maintain stock OEM body. Door panels and rear quarter panels, may be fabricated of steel. Body sheet metal may be updated through current models, but must exactly replace early sheet metal. No interchanging of MFG bodies and frames.

C. Original bodylines must be maintained, and stock appearing on fabricated panels.

D. Hood and deck lid pins required. A minimum of 2 pins across front hood, and 2 across rear of deck lid. One (1) additional pin required for each additional missing hinge.

E. Full stock floorboards and firewalls required. All holes to be covered by sheet metal and welded in place. Firewall sheet metal must remain in stock location.

F. All doors must be bolted, strapped or welded shut

G. Rear trunk area may remain open.

H. Rear deck lid spoiler allowed, maximum 4" tall and no wider than car or over 60" wide, top 3" must be clear plastic.

I. No front lower spoilers or valances allowed. Air scoop for radiator allowed, no wider than radiator and may not hang down.

J. A minimum of four (4) inches of clearance, body to ground.

K. Fiberglass front ends allowed.


A. Full NASCAR type roll cages mandatory. Bars must be a minimum of 1 ½" O.D. / .090" wall thickness, gusset as necessary for strength.

B. Minimum of three (3) door bars required on both sides. Right side can be straight.

C. Engine must be in stock location.

D. Rear kicker bars may extend to rear cross member.

E. Fuel cell protector required no more than the width of the frame rails.

F. Main roll cage uprights must be fastened to floor of uni-body cars with a minimum 3/16" thick plate, top and bottom, at all for corners. Plate must be a minimum of 4" square, with (4); 3/8" grade 8 bolts at each location.

G. Roll bar padding must be used at any point where driver may make contact.

H. Door bars must be covered with 1/6" thick steel metal plate, top to bottom, from front and rear uprights, welded to outside of bars.

I. A radiator protector/front hoop, 2/3 the height of the uprights of the roll cage, but must follow the frame rails. 1½" O.D. maximum.

J. Stock frames only. No modifications allowed

K. Oil Pans must have a minimum of three (3) inches of clearance.


A. A windshield made of LEXAN® may be used. Minimum thickness is 1/8 inch. Windshields must be supported between the dash bar and roof halo bar with a minimum of two (2) evenly spaced metal straps 1/8 inch by 1 inch or a single 1.75 inch bar in the center of the windshield welded to the dash bar and the roof halo bar.

B. Each car may have a rear window made of clear LEXAN®.

C. All side window glass must be removed. A right side window of any type is not permitted. Side quarter windows behind the "B" pillar can be replaced with LEXAN®. Driver side window net is required on all cars. Net material must be minimum 1 inch wide and have openings of at least one (1) inch. Net must be equipped with a quick-release device on the top left front corner.

D. All mirrors including mount locations subject to specific tech approval.

E. Left side mirrors allowed.


A. Minimum of four (4) inches of ground clearance.

B. Cars with wheelbase of 111" and over must weigh 3200 lbs. with driver. Left side weight with driver can not be over 55%. Cars with wheelbase of 110" or less (Camaros, Fire Birds, Mustangs, and or similar type cars are allowed) must weigh 3300 with driver. Left side weight with driver can not be over 54%.

C. No wheelbase can be under 108" at anytime. 108" is the minimum.

D. All cars must be within 1% after the race.


A. Stock bumpers are required.

B. Front and rear bumper must be fastened to the fender and or quarter panel.

C. Height must measure 15" to 18" center to ground.


Cylinder compression limited to 190 lbs.

Ford 351 C.I. Chevrolet 350 C.I. Plus max .060 overbore

Dodge 360 C.I.

A. No Big Blocks

B. Engine must be in stock location.

C. Engine oil coolers allowed.

D. Aftermarket oil pans, valve covers, water pump, fan pullies are allowed.

E. No "stroker" or lightweight cranks allowed, factory OEM cranks only.

F. Heads: Stock cast iron heads only. A stock head will be characterized as a cylinder head which was offered as standard equipment with no performance advantage.

G. No special performance options will be allowed, including but not limited to, oversize valves, special cut valves, relocated intake or exhaust bowls or ports.

H. No porting or polishing will be allowed.

I. No Vortec heads allowed..

J. Stock steel, stock stainless steel valve train components only. No roler rockers of any type.

K. Screw in studs and guide plates allowed, stud girdles are permitted, shaft rockers are not permitted.

L. Engine Blocks: Stock cast iron block only. No modifications allowed.

M. Stock stroke for engine being used, exp. 350 C.I. Chevy 3.48" stroke.

N. Stock rods only after market rod bolts ok.

O. No roller or mushroom lifters allowed.

P. Stock type timing chain and gears only.

Q. No belts or gear drives allowed.

R. No crank lightening or grinding allowed.

S. No after market lightweight cranks allowed.


A. Holley # 4412 or Holley Keith Dorton #80583 Box stock except for the following: 1) Gasket, bowls seal, accelerator pump squirter, power valve, jets, sight plug, choke plate and shaft may be removed.

B. Pure stocks with 112" wheel base can run a stock 4 barrel carburetor or Holley 4 barrel #01850

C. Two (2) carburetor return springs required must be mounted to engine block.

D. Maximum 1.25" carburetor adapter allowed. Bores in adapter will not be tapered or bowl shaped.

E. Aluminum intake manifold permitted stock. OEM, aluminum duel-plane manifolds allowed. After market copy of OEM, aluminum duel-plane manifolds allowed.


A. No cold air induction allowed, K&N air filters are allowed.

B. No air deflector allowed on front. Air filters only.

C. Top and bottom of air cleaner must be solid and same diameter.

D. Tubes, funnels, or any device which may control the flow of air, will not be permitted inside the air cleaner or between filter housing and carburetor.


A. Factory stock location.

B. Engine oil pan height must not be less than current car ride-height rule.

C. Crankshaft must be centered within one (1) inch of the vehicle's front tread width.

D. All mounts must be securely bolted and adjustable mounts are not permitted.

E. Minimum clearance between the center of the crankshaft and the ground must be ten (10) inches.


A. Stock type ignition only. No performance after market distributors or magnetos allowed.

1. No MSD systems allowed.

2. Magnetos, crank trigger, optically triggered or computerized systems are not permitted.

B. All cars must be equipped with a master electrical switch located in the cockpit of the car. The switch must be within reach of the driver and safety crew from the left side of the car.

C. Batteries must be securely mounted within the confines of the body and behind driver.

D. Batteries must be contained in electrically insulated container. Dry cell batteries are not required to be contained in a leak proof container. No marine or plastic type boxes allowed. Subject to tech approval.

E. Batteries must be mounted in front of rear axle.


A. All cars must have a functional fan containing a minimum of four (4) blades, and a minimum diameter of fourteen (14) inches or optional electric fan. Free spin or clutch fans are not permitted.

B. Fan shroud mandatory.

C. No fiberglass flex fans.

D. Fan mandatory, bolted on motor, in stock location. Electric fans are permitted.

E. Water overflow catch can unit required. One (1) quart minimum, vented out to windshield, metal or plastic, ounted in engine compartment.

F. No anti-freeze or similar products. This is a finable offense.

G. Water wetter permitted.


A. Stock manifolds mandatory. Cast iron only. No modification allowed.

B. No header style, center dump, or up swept manifolds allowed for Ford or General Motors products.

C. Chrysler products are allowed center-dump's as these are stock for that manufacturer.

D. No internal modifications are allowed to exhaust manifolds.

E. An approved muffler is mandatory, must not exceed 95 db @ 100 feet.

F. Exhaust must extend past driver's compartment.


A. Clutch will be stock type only. Aftermarket master and slave cylinder allowed.

B. No lightweight or racing type disc, pressure plated, or fly wheels allowed.

C. Aluminum flywheels are not permitted. OEM type only.

D. Scatter shields mandatory!

E. Stock clutch and flywheel only. No lightening of flywheel permitted.

F. Locked, limited slip, or positive-traction differentials, is permitted.

G. Rear end must be centered in car.

H. Floater type rear ends are permitted.

I. Automatic transmissions optional, torque converter must be operational, transmission oil cooler required.

J. Ford 9" rear end allowed. Must be mounted exactly as old rear end was removed, may be used in any MFR line.

K. Two (2) driveline straps, 1" x 1/8" required, mounting to be within 6" of the U-joints are required on rear drive vehicles. Drive shaft must be painted white for on track visibility in the event it should become separated from the car.

L. No aluminum or composite drive shafts.


A. Stock OEM upper and lower control arms only, no crossing OEM lines and no modifications allowed.

B. Stock upper control arm mounting may be moved for caster/camber, must remain stock height.

C. Rated springs are allowed, front and rear.

D. Lowering blocks allowed.

E. All other suspension components must be of original design and origin for the chassis used. No after market look alike parts to widen suspension.

F. No Aluminum shocks permitted, nor racing shocks permitted.

G. No weight jacks. Adjustable spring spacers allowed.

H. No after market pedal or master cylinder assemblies allowed. Stock parts only.

I. Rear disc brakes allowed. All components must be OEM cast iron. No after market parts of any type or brand allowed.

J. Stock, 4 wheel hydraulic brakes required, and all must be in good working order.

K. No adjustable brake bias valves allowed


A. Stock steering components only.

B. Quick release steering wheels are required.

C. Steering column must be collapsible. U joints are acceptable.


A. Only Torco Racing Fuel will be permitted for use and must be purchased from track fuel vendor. The chemical composition of the fuel may not be altered by any means.

B. All cars must be equipped with an approved fuel cell, securely mounted in the trunk area as far forward as possible. Minimum 10" ground clearance.

C. Fuel cell must be mounted with steel framework (1 inch x 1 inch, .065 inch minimum) and attached with a minimum of four (4), three-eighths (3/8) inch bolts to the frame rails. Fuel cell must have a vent hose and the hose must have a check valve in the end.

D. Fuel cell must be totally enclosed in an 18 gauge steel box with a 1/2-inch drain hole in the lower right rear corner. Ground strap required from fill neck to frame.

E. Maximum fuel capacity - 22 gallons.

F. No electric fuel pumps permitted Fuel lines may not enter driver's compartment.

G. All cars must have a minimum of two (2) springs on throttle return cable.


A. Steel wheels are mandatory, maximum 8" width any offset.

B. All four wheels must be same offset.

C. 5/8" wheel studs required on all four (4) wheels.

D. The use of any bleeder valves is prohibited.

E. Wheel spacers optional and must be 1/2" maximum, per wheel.

F. The track tire is the Hoosier #970.


A. For all safety equipment. It will be the sole responsibility of the driver, not I-10 SPEEDWAY, their agents/officials or corporate officers to ensure that his/her safety equipment is correctly installed, maintained, and properly used. Please refer to manufacturer installation an usage guide lines and adhere to them.

B. Aluminum professionally built high back racing seat required. No plastic, etc.

C. Padded headrest required.

D. Seat must be securely bolted to a mount assembly, that is an integral part of the roll cage.

E. Seat will not be attached to the floorboard.

F. A five (5) point safety harness, with quick release is mandatory! 3" wide lap belt, 2" or 3" shoulder belts, and a 2" submarine belt. All belts shall be attached to roll cage using minimum 3/8 grade 8 hardware and safety cables.

G. Cotton harness components prohibited.

H. Safety harnesses/seat belts may be no more than three (3) years old. If necessary, proof of purchase may be required.

I. Helmets; Head and Neck Restraint Devices:

1. Snell SA2000 or SA2005 helmet required.

2. Full face helmets with Lexan face shield recommended.

3. Nomex helmet skirt, and nomex covered chinstrap highly recommended.

4. A HANS or Hutchens type head and neck restraint device is recommended.

J. Window net mandatory! Minimum 1" mesh with release at top only. It is required that all window net releases be updated to the quick release seat belt type with releases located and facing the outside of the car. No close mesh off-road type allowed.

K. Fire suit mandatory at all times.

L. Approved racing gloves mandatory. No welding gloves, gardening gloves, etc.

M. Approved racing shoes recommended. No nylon shoes permitted.

N. Eye protection is mandatory and must be in proper place at all times.

O. Current test date (2 pound minimum) fire extinguisher to be installed in the car within drivers reach while strapped in. Steel mounts only, no plastic.

P. All cars will be required to have in their pits a minimum of one 5 pound, Halon or dry chemical fire extinguisher. This is to be visible to tech officials and all crewmembers. All crew members must be made aware of its location, and knowledgeable in the use of the fire extinguisher.

Q. Car and driver will be required to make safety rule violations comply PRIOR to racing any event.


A. All cars are to be neatly and brightly painted.

B. All cars will display a 2 digit number, series 00 – 99, no single digit numbers.

C. Numbers will be a minimum of 18" on the roof and both door panels. Numbers on the roof to face toward scoring tower (flag stand). No aluminum foil type lettering.

D. Numbers assigned to car will be displayed on the top right front of windshield, 3" minimum.

E. Drivers first and last name to be placed above each door, on the roof in 3" letters minimum.

F. No duplication of numbers, additional letters such as "X", "Y", and "N" are not to be used.

G. Advertising or names on the windshield is not permitted. This will be reserved for a series sponsor.

H. Advertising that is deemed to be unsuitable/offensive, will not be allowed. Decision of I-10 SPEEDWAY Race Director will be official.

I. Series sponsor decals, if any, must be placed on designated location of car to be eligible for awards. This is to be completed PRIOR to competing in any event.


°F | °C
Humidity: 40%
65 | 87
18 | 30
67 | 94
19 | 34

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