NOTICE: Rules are subject to Change without Notice.

Class Description:

Modular True Street is a racing class for street cars that you would see on the road every day. They can be highly modified or bone stock. This class is for all vehicles with a late-model modular based V8 overhead-cam engine. All modifications permitted. The vehicle must be registered, licenses, and insured. There awards for the winner of each category, but also for the following: closest average ET that is not quicker than the following – 8.00, 9.00, 10.00, 11.00, 12.00, 13.00, 14.00, and 15.00. Each class winner will fall within its respective ET category. For example, the 12 second winner average must be between 12.00 to 12.99.

TRUE STREET Directions / Route

  1. Leave South Georgia Motorsports Park
  2. Turn right, head south on US-41 S
  3. Turn right onto Old Coffee Rd.
  4. Old Coffee Rd turns into into County Line Rd
  5. Turn right onto Old Valdosta Rd
  6. Old Valdosta turns into MJ Taylor Rd
  7. MJ Taylor turns into Old Union Rd.
  8. Turn right onto Old Quitman Rd.
  9. Turn right onto S. Hutchinson Ave/US-41 S
  10. Turn left onto Val-Del Rd
  11. Turn right onto Fellowship Church Rd/GA-122
  12. Turn right onto US-41
  13. Turn Left into South Georgia Motorsports Park

Qualifying Information, Ladder Type, & Tree:

All Run, 3-back to back runs, 500 Pro tree, Heads-Up, 1/4 mile, Courtesy Stage



All cars in competition must be painted or wrapped. Advertising graphics are permitted on the body but must not compete with Mod Motor Mustangs and Mod Nationals vendors and sponsors. All decals that are not approved at ModNationals must be removed and if the decal is part of the wrap, it must be covered up before the car is eligible to run. No exceptions. Those who do not comply will be asked to leave with no refund.


Class Rules:

Any vehicle with a late-model modular based V8 overhead-cam engine


Body Rules:

OEM steel (fiberglass/composite if OEM equipped) body shell required. Aftermarket body kits are ok. Only permitted lightweight components are hood, front valance, front and rear bumpers, and rear trunk lid/hatch. Hood is required, may be made of lightweight material. Hood scoops are ok. Any rear wing is ok. OEM safety glass windows required and must be in working condition. Lexan prohibited.


Power Adders & Powertrain:

Any late-model modular based V8 overhead-cam engine permitted and any power adders are permitted. Any manual or automatic transmission is permitted. Any rear end is permitted.


Exhaust System:

Fender exit exhaust is permitted.



Stock-type chassis is ok. Stock firewall and stock front frame rails must be in stock location and unmodified. Starting at the firewall rearward, floor and chassis may be replaced with aftermarket components. Full tube-type chassis vehicles prohibited.


Front Suspension:

Stock-type front suspension, or stock bolt in type replacement front suspension required. Tubular front suspension is ok. Coilover shocks/struts are ok.


Rear Suspension:

Stock type chassis and stock type suspension is required (stock style suspension as equipped by manufacturer). Coilover shocks and springs permitted in both front and rear suspension. Shocks and spring may be relocated. Standard bolt on replacement suspension and chassis components are ok. Tubular bolt in front K-members and A-arms are ok. Back-half vehicles are prohibited. Ladder bars and/or aftermarket 4 links are prohibited. Wheel bars are prohibited.


Street Equipment:

In order to compete, all vehicles and/or drivers are required the following:

  1. Valid driver’s license
  2. Valid vehicle registration
  3. Valid license plate (s). Dealer plates prohibited. Paper license tag will be accepted on a new model year car with current registration paperwork less than 60 days old from current event date.
  4. Valid Insurance “ID” card. Faxes and/or letters from insurance and/or brokers not acceptable.
  5. Valid state inspection sticker (If required by the state the vehicle is registered).
  6. O.T. Radials or D.O.T. Slicks on front and rear of vehicle
  7. Hood is required, may be made of lightweight material. Hood schools are ok. Hood/scoop may be liftoff.
  8. All OEM safety glass windows required and must be functional. Lexan prohibited. Trucks may use Lexan on the rear window only if there is a roll bar installed.
  9. Performance aftermarket or OEM style functioning Driver and Passenger seats required.
  10. During the tech-in process, vehicle must have operational street equipment, including headlights, taillights, brake lights, turn signals and horn.


Tires: Front and Rear:

D.O.T. slick tires or D.O.T. legal radials tires are required for entry into the class and are required for the road tour and the Modular True Street Competition and class run off. Racing slicks prohibited. Maximum actual measured tire size is as follows: Actual measured tread of all racing slick-type tire is limited to 10.75 inches. For D.O.T. radial tires, maximum sidewall designation permitted is 325mm. Tire height is unrestricted. A “go/no go” gauge will be used to measure tire width. Tire shavings prohibited. Tire change is prohibited during or after the road tour. Vehicles equipped with the factor 345 D.O.T. Radials are permitted to compete with the 345 style D.O.T. Radial on an 18-inch rim.



Wheels: Spindle mount front wheels prohibited


30-mile cruise:

There will be a 30 mile supervised cruise on the highway and city streets prior to competition, limited to those vehicles that have passed tech inspection. An escort will supervise the cruise in accordance with local laws and ordinances. Each competitor and crew will be on their own recognizance during the escort and cruise and bear the full responsibility of their actions as they would on any city streets. Please be safe and follow the traffic laws on the cruise.


Support Vehicles:

Support vehicles (tow vehicles, crew, etc.) are allowed on the road tour but must trail behind the True Street participants and the escort at all times. All support vehicles are on their own recognizance and must obey all applicable local safety and traffic laws.



Cruise is mandatory in the time allotted for competition. Any vehicle unable to complete the road tour under its own power, within the allotted time, will be disqualified from racing. Any vehicle that falls behind the trailing escort will be disqualified.


Cooldown Period/Return Procedures:

After the vehicles return from the road tour, they will return direction to the designated staging lanes for the cool-down period. Changing tires is prohibited. The cool-down period will typically last between 15 minutes to 1 hour depending on the classes and potential delays.

During the cool down period only, entrants are allowed to:

  1. Adjust tire pressure (add or remove).
  2. Install fresh nitrous bottles.
  3. Install ice in their intercooler (only if it is located in the trunk, rear hatch or rear seat area).

Anything not listed above is prohibited.

A strict closed hood policy will be in effect until the competitor has completed their three back-to-back passes. No refueling allowed once the car leaves on the cruise. Engines must remain turned off during the entire cool-down period. External cooling of engine by any means (cold water, outdoor fans, etc.) prohibited. Any engine changes, repairs, or adjustments are prohibited. Changing of tires is prohibited. No laptops in the car during the back-to-back-to-back runs. External charging of battery/batteries prohibited.


Race Format:

When called to “load up” in the staging lanes, all Modular True Street competitors must report to their cars and prepare to make three back-to-back quarter mile passes. All hoods and trunks must remain secured, as they must remain closed until completion of all three passes. Vehicles with air-to-water intercoolers may not add ice to intercooler tanks between back-to-back passes, even if intercooler tank is located inside the interior of the vehicle.


Final Standings:

After three quarter mile passes are completed, each racer’s ET will be added and the average of these three passes will be computed. The outcome of the 3-run average will be posted Sunday morning, and the awards presentation will be held Sunday. On a qualifying run, if a contestant properly starts, stages and received the starters signals but breaks to the point that the run can’t be completed, a time of 28 seconds is issue and it is considered a valid qualifying run.


Back-To-Back Passes:

Tire pressure may be checked in the staging lanes, or between rounds, and may be lowered or raised at any time during the back-to-back passes as long as this function is performed by the driver only and cannot alter the run order or delay the competitor’s ability to move to the ready line when instructed. Vehicles are required to make three full passes in order to be included in the final average ET tally.

All vehicles must run three passes in the same order as the first pass. Any attempt to gain additional cool down time between the rounds will result in a disqualification. The only possible exception to this rule is the use of a parachute, if the vehicle requires it due to ET and MPH. One crew member can be placed in the staging lanes to aid in the re-packing of the parachute.

However, the chute must be re-packed in a manner as not to be disruptive to competition rounds. There will be separate staging lanes designated for any vehicle need to re-pack parachutes. Any vehicle unable to start under its own power will be disqualified. Once all rounds have been completed, prize money and awards will be given based on the final average of all three quarter mile passes. During, and in-between the back-to-back passes, no changes may be made to the vehicle other than lowering the tire pressure.

Nitrous, fuel, and ice may not be installed/replenished. Nitrous bottles may be turned off and back on while in the staging lanes before and during the three back-to-back passes. Vehicles with air-to-water intercoolers may not add ice to intercooler tank between back-to-back passes, even if the intercooler tank is located on the interior of the vehicle.

The driver is the only person allowed to push vehicle in the staging lanes between runs.


Weight Breaks:

There is no minimum weight.



When in the vehicle, the driver is required to have all safety restraints systems (including helmet) on and securely fastened in the vehicle at all times.



A Valid state or government issued driver’s license beyond a learner’s permit level mandatory for cars running 10.00 or slower. A Valid NHRA competition license is mandatory for cars running 9.99 or quicker, at an NHRA Member Track. NHRA/IHRA competition license mandatory at an IHRA Member Track.



It is ultimately the competitor’s responsibility to familiarize themselves with the ModNationals class requirements as well as all NHRA safety requirements. The competitor agrees they bear the ultimate responsibility when it comes to safety and how it complies with NHRA rule books. The competitor also agrees that no one else other than the competitor is in the best position to know about how their particular race car has been constructed and how to safely operate it.