2015 Stock Car Rules

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All drivers must have a RaceCeiver one way communication device.

Stock Cars will be under UMP Stock Car sanction in 2015. Track rules supersede UMP rules. UMP licenses are only required for those choosing to pursue National and Regional UMP Points. If you are running for local track points only, then no license is required.

General Rules & Procedures

1. The rules and/or regulations set forth herein do not express or imply warranty of safety from publication of or compliance with these rules and/or regulations; they are intended as a guide for the conduct of the sport and are in no way a guarantee against injury.

2. Hartford Speedway may at anytime make amendments to the rules set forth.

3. Hartford Speedway officials shall have full authority over events. At the discretion of Hartford Speedway officials, any competitor may be penalized for rule violations, hazardous actions or assaults/threats against any official.

4. Cars will be permitted to race after Hartford Speedway inspector approval.

5. The uses of pit boards or colored flashlights are prohibited.

6. No radios or mirrors are allowed.


1. The number one (1) spark plug must align itself in a perpendicular line with the center of the upper ball joint for each manufacturer.

2. Cast iron engine blocks only. (No Aluminum blocks!)

3. Cast iron cylinder heads of any make are permitted. (No Aluminum Heads!)

4. Roller tip and roller type rocker arms will be permitted.

5. Roller cams allowed.

6. Cast Iron or Aluminum intake manifolds will be permitted.

7. Cast Iron or aftermarket exhaust headers will be permitted. Exhaust flow must exit away from the car.

8. Distributor ignition systems only. No crank triggers, distributor less ignitions or computers allowed. Capacitive discharge ignition allowed. MSD ignition box OK. No controls in driver compartment.

9. Conventional or Aluminum radiators will be permitted.

10. One gauge legal 500 CFM 4412 Holley unaltered carburetor is required. The track reserves the right for carburetors to be claimed and/or changed for competitive analysis and/or inspection. Any other alterations to the body of the carburetor, internal working mechanisms, venturis, throttle play and/or any other part and/or component of the carburetor will not be permitted. Choke blade may be removed.

11. Only mechanical fuel pumps will be permitted.

12. All cars must be equipped with an operable starter in working condition.

13. All cars must have working mufflers.


1. Stock automatic or manual transmission, mini clutch allowed.

2. Bert / Brinn / Falcon transmissions permitted with 50lb (pound) weight penalty. Weight must be mounted in front of the bellhousing.

3. Aftermarket clutch pedal allowed.

4. An aluminum OEM bell housing and/or aftermarket explosion-proof aluminum bellhousing will be permitted.

Drive Shaft

1. The drive shaft must be a minimum two (2) inch diameter and made from magnetic steel.

2. The drive shaft must be painted white and clearly labeled with the car number on the white portion of the drive shaft for the duration of the entire race season.

3. At least one 360-degree drive shaft loop will be required, mounted six (6) inches from the the front universal joint. A second drive shaft hoop is recommended and must be placed within 12” inches of the front universal joint.


1. Only American manufactured cars and/or full-size “uni-body” type cars will be permitted. (Camaros OK).

2. All vehicles must maintain a minimum of 107” (inch) wheelbase.

3. The rear frame may be replaced from the rear shock absorber mounts towards the rear of the car.


1. The minimum weight requirement at all times will be 3,200lbs (pounds). All cars running Bert / Brinn / Falcon type transmissions must weigh 3,250lbs (pounds) with 50lbs (pounds) mounted in front of the bell housing.

2. All weights must be securely mounted with two (2) 1/2” (inch) bolts securing them to the frame in a positive manner. The weight(s) must be painted white with the car number clearly marked on them. All weights must be mounted under the body of the car.

3. All competitors should have an extra 100lbs of lead painted white, pre-drilled, with 1/2” bolts and large washers, so this lead can be readily added to your car in the event of a rules infraction.

Fuel Cells and Fuel

1. Gas or E85 only. (No Alcohol!)

2. The fuel cell must be securely mounted in the rear of the car and secured with straps. It is recommended that the fuel cell be mounted solidly to the rear frame rails of the vehicle in a fabricated manner.

3. All fuel cells must be enclosed in a metal container.

4. The fuel cell must be a steel container with a minimum of two (2) one (1) inch by 1/8” (inch) steel straps on each side of the container to mount the fuel cell. A couple loops of plumbers strap will not suffice for this, these tanks must be secured solid.


1. Body must be mounted in stock OEM location centered between the wheels. No exposed tubing or bracing outside of the body line of car. Body must be steel stock appearing body. Five-Star style all steel body allowed. (aluminum doors and front fenders are OK).

2. The front windshield opening must be covered with wire mesh. Three vertical driver protection bars are required in the windshield ahead of the driver.

3. Front OEM firewall may be replaced using steel fabricated firewall, 18 gauge or minimum 0.049 inch thickness. Top of firewall can be no further back than 12 inches from the back of engine block, measured horizontally. Bottom of firewall can be no further back than rear of oval body mount frame hole. Dash must not extend more than 24 inches back from top of firewall. Dash must be flat, rear can be no higher than front, except for cowl in front of driver. OEM floor pan may be replaced using steel fabricated floor pan, 18 gauge or minimum 0.049 inch thickness, securely welded to frame. Floor pan may be replaced from front firewall to rear halo supports. Must remain flat/OEM appearing from frame rail to frame rail, can be no higher or lower than frame rail. Exception is maximum 8-inch tall drive shaft tunnel. Tunnel must remain similar to OEM tunnel in size. No cockpits, interior must remain open. Rear firewall must be steel and may be located no further forward than rear halo supports and no higher than bottom of rear opera windows. All holes in firewalls must be covered with metal.

4. The driver and passenger compartment must remain open from left to right exposing the stock-appearing floor pan and the the rear seat firewall and shelf.

5. The trunk floor area may be cut to allow for the mounting of the fuel cell.

6. The body, including rear quarters, and roof, must be made of magnetic steel and maintain stock appearance.

7. Exposed tubing and/or bracing outside of the bodyline of the car will not be permitted with the exception of the rub/side rails.

8. Plastic aftermarket front nose will be permitted provided they are approved and stock appearing for the year, make and model of the car. Late Model type aerodynamic noses will not be permitted.

9. Rub/side rails may be attached flush to the body from the fender well to the rear quarter panel.

10. Mirrors of any type are not permitted.

11. The back of the hood must be sealed off from the driver’s compartment.

12. Sharp edges will not be permitted. Both sides and ends of the bumper must be capped. Tube-type front bumper will be permitted. Tube-type bumpers must have capped ends.

13. Stock bumpers will be permitted and must be mounted in stock OEM location.

14. The rear of the car must be enclosed. The rear bumpers may be covered and must have round edges and connect solidly to the frame. Aftermarket rear bumper covers will be permitted provided they are approved and stock appearing for the year, make, and model of the car.

15. Spoiler (optional):
* Maximum of a 8″ inch tall by 60″ inch wide spoiler is allowed.
* Maximum Height: 8″ Total Material With Maximum of 3 Vertical Supports.
* Maximum Dimensions On Spoiler Supports: 12″ Long at Bottom, 8″ Tall at Rear. 8″ Tall May Extend 4″ Forward From Back Then Taper To a Maximum of 2″
Tall at Front. (Diagram Available At Top of Page)

16. All cars are required to have a cable or chain to hook up to on the front and rear of the car in the event of needing to tow your car off the track.


1. All suspension components must remain stock in their OEM mounting locations for the year make and model of the vehicle with the exception of racing shocks (outboard shocks OK).

2. The steering shaft may be a collapsible shaft.

3. Aftermarket steering wheel and quick release are permitted.

4. Steering quickening devices are permitted.

5. Aftermarket steering components will be permitted. Aftermarket steering components must be similar and/or replacement in type to the OEM application for the make and model of the vehicle.

6. All components and mounts must be steel, unaltered OEM, in OEM location and match frame. Rubber, nylon or steel lower A-frame bushings only – no offset or bearing type. Aftermarket upper A-frames allowed.

7. Floater rear ends OK. No quick change rear ends.

8. The lower rear trailing arms must remain in their stock OEM length, format and length, from the original OEM application and measurement system (English or Metric) and must remain specific to their particular chassis/frame and must be the same length on each side. The lower trailing arms must be mounted in the stock location. Additional holes in the frame and/or rear end will not be permitted.

9. The upper rear trailing arms may be altered (shortened and/or lengthened) to obtain the correct pinion angle.

10. Aftermarket bushing will be permitted, but the arm must not be altered in any manner. Slots and/or adjustable rod ends will not be permitted.

11. Leaf-type springs will be permitted. Only stock OEM type magnetic steel leaf spring(s) stack(s) will be permitted. Single leaf, mono type leaf and/or any type of slider and/or any composite leaf type applications will not be permitted.

12. Coil-over applications of any type will not be permitted.

13. Aftermarket coil springs will be permitted. The coil spring location may be altered, however, the center line of the axle tube may not be any further forward than the front of the spring or not further back than the rear of the spring.

14. Any non-adjustable shock mounted in stock OEM location will be permitted.

15. Spring adjusters or jack bolts permitted on all four corners.

16. Hydraulic ratchet and/or electric weight jacks are not permitted.

17. After market master cylinders and brake pedals will be permitted. (Brake bias adjusters OK).

18. Brake floaters will not be permitted.

Wheels & Tires

1. A maximum 8” (inch) wide steel racing wheel will be permitted. Aluminum and/or magnesium and/or mag-type and/or homemade wheels will not be permitted. 1 inch magnetic steel lugnuts will be permitted on all four corners of the vehicle.

2. Only Hoosier E-Mod tires; compounds: D, H, and/or A will be permitted. (DOT tires OK). If running DOT tires you do not have to have the Hoosier tire on the Right Rear. No mixing and matching Hoosiers with DOT tires!

3. Hoosier E-Mod A or H compound tires on the right rear at ALL times.

4. Defacing or altering any of the manufacturer’s identification markings, letters, works, numbers, on any tire will not be permitted.

5. Grooving and siping will be permitted.

6. Bead lock wheels will be permitted on the right rear ONLY.


1. A competition-type 4 point roll cage is required and must be constructed with tubing that is a minimum of one and one-half inches in diameter, with a minimum of .095 wall thickness. A minimum of three horizontal door bars  is required in the driver’s door (four bars highly recommended). A minimum of three horizontal door bars or X construction is recommended for the passenger’s side of the car. Three vertical driver protection bars are required in the windshield ahead of the driver. You may run front and rear bars through the firewall, with 1 kicker bar to the frame. A radiator protection bar is optional.

2. A competition-type racing seat is required. A full containment aluminum seat is highly recommended.(no fiberglass seats allowed)

3. The seat must be mounted a minimum of 30” (inches) from the centerline of the rear end, measured at any point of the rear of the seat.

4. DRIVER HARNESS: Five point, two or three inch wide racing harness is mandatory. It is VERY STRONGLY RECOMMENDED that the belts are SFI approved and no more than two (2) years old from date of manufacturing.

5. Head and neck restraint system is strongly encouraged.

6. An approved, Snell SA 2000 or a Snell SA2005 helmet (Snell sticker must be in helmet) is required.

7. An approved complete racing fire suit and fireproof gloves is required. Fireproof shoes, and neck collar are highly recommended. Also, a driver’s side window net is required.

8. All batteries that are mounted inside the driver’s compartment must be completely enclosed in a marine-type box with a lid, and mounted securely.

9. All weights must be securely mounted with two half inch bolts and be painted white with the car number clearly marked. All weights must be mounted under the body of the car.

10. Working fire extinguisher in drivers compartment required.

11. Fuel line from trunk to the engine compartment must be steel, steel braided, or aeroquip line. (No rubber hose!)

12. If fuel cell does not have aircraft style positive seal filler neck/cap system – a flapper, spring or ball type filler rollover valve is required.

13. Working battery disconnect switch required within easy reach from both sides of the car and must be clearly marked “OFF” and “ON”.


1. Numbers with letters are allowed. Make the letter is large enough to be seen from the tower.

2. The thickness of the number must be no less than 3 inches.

3. Color of the number must be contrasting with the car color.

4. Numbers must be located on both doors and the roof of the car. Put the roof number so it can be read from the tower when the car is in the front stretch.

5. A 6 inch tall car number required on tail of car.

Towing Hookups

1. All cars are required to have a cable or chain to hook up to on the front and rear of the car in the event of needing to tow your car off the track.