Box Bracket

1/8 Mile | 4.40 to 7.99 ET | Electronics Allowed

1. Computer: Prohibited unless stock OEM equipment. See General Regulations 9:1

2. Data Recorders: Permitted. Refer to General Regulations 9:2 and 9:10

3. Delay Boxes: Permitted. One box/device only, attached to transbrake and/or throttle timer. Wiring must be clearly identifiable for inspection. Refer to 2016 NHRA Rulebook

4. Transbrake: Permitted

5. Line Lock: Four-wheel line lock permitted

6. Automated Shifter: Permitted

7. Throttle Control: Permitted per NHRA Rulebook

8. Ignition:

   • Stutter boxes prohibited

   • Starting line and “high side” rev limiters permitted

   • RPM-limiting devices are legal if not used as down-track controllers

9. Switches & Buttons: Must be NHRA-accepted mechanical connection types. Non-mechanical switches (e.g., infrared, retinal scan) prohibited

No Box Bracket

1/8 Mile | 5.70 to 9.10 ET | No Electronics

1. Computer: Prohibited unless stock OEM equipment. See General Regulations 9:1

2. Data Recorders: Prohibited. Refer to General Regulations 9:2 and 9:10

3. Delay Boxes: Prohibited and must be removed from cars

4. Transbrake: Permitted

5. Line Lock: Four-wheel line lock permitted

6. Automated Shifter: Permitted

7. Throttle Control: Must be manually operated by the driver. No electronics, pneumatics, hydraulics, or other devices may affect throttle operation. A deadstop under carburetor or gas pedal is permitted. Throttle timers and counters are prohibited

8. Ignition:

   • Stutter boxes prohibited

   • Starting line and “high side” rev limiters permitted

   • RPM-limiting devices are legal if not used as down-track controllers

9. Switches & Buttons: Must be NHRA-accepted mechanical connection types. Non-mechanical switches (e.g., infrared, retinal scan) prohibited

10. Tow Vehicles: Prohibited

Outlaw Big Tire

1/8 Mile | .400 Pro Tree | No-Time | Chip Draw Eliminations

Vehicle Type:

• MUST BE DOOR CAR

• Pro Mod / Pro Stock / Top Sportsman / Carbon-Fiberglass Shells style cars

Tree & Timing:

• .400 Pro Tree

• Scoreboards will be turned off

Eliminations Format:

• Chip Draw for each elimination round

N/A 10.5

1/8 Mile | No-Time | Chip Draw Eliminations

Vehicle Requirements:

• Steel Roof & Quarters — GM Corvettes excluded

Weight & Tire Rules:

• Small Block (SB):

  • 2700 lb minimum

  • 29 x 10.5 or smaller tires — no W’s

  • Equivalent size radial and 275 Pro OK

• Big Block (BB):

  • 2950 lb minimum

  • 28 x 10.5 or smaller tires — no W’s

  • Equivalent size radial and 275 Pro OK

• NEW for 2025:

  • BB cars may run with 29.5 x 10.5 at 3250 lb minimum

Tree & Timing:

• Clocks off

Eliminations Format:

• Chip draw and unlimited bye runs — no exceptions

Truck

1/8 Mile | .400 Pro Tree | No-Time | Chip Draw Eliminations

Vehicle Requirements:

• Open to all trucks

Power Adders:

• Single power adder only

Tree & Timing:

• .400 Pro Tree

• Clocks off

Real Steel

1/8 Mile | No-Time | Chip Draw Eliminations

Vehicle Requirements:

• OEM Steel Doors

• OEM Steel Fenders

• Hood, bumpers, deck lids, trunk can be carbon/fiberglass

• OEM Side Door Glass & 1/4 Windows (No exceptions)

• Working OEM Style Street Legal Head & Tail Lights, no airbrushed or add-on fake BS

• Factory Appearing Dash (can be carbon fiber or fiberglass)

• No full tube chassis cars

• Wheelbase must be within 1” of factory specs

Engine Limits:

• SB: 4.400 Bore Space MAX

• BB: 4.84 / 4.90 Bore Space MAX

Tires:
Rear Drive Radial Drag Tires Only (No Bias-Ply Slicks or Hard Tires)

• 15-Inch Rear Wheels:

  • Any 275 Radial or 28×10.5×15 Bracket Radial (or smaller)

• 17-Inch Rear Wheels:

  • Any 315 Radial or 29.5×10.5-17 Bracket Radial (or smaller)

Chassis & Suspension:

• No wheelie bars

Tree & Timing:

• Scoreboards will be turned off

Eliminations Format:

• Chip Draw for each elimination round

5.35 Index

1/8 Mile | Heads-Up | 5.35 Index | No-Time | .400 Pro Tree

Class Format:

• Little Gangsters Welcome

• Heads-up, no-time class

• .400 Pro Tree

• 5.35-second index enforced

•  Chip Draw for Eliminations

Electronics:

• No delay boxes

• No throttle stops

5.80 Index

1/8 Mile | 5.80 Index | .400 Pro Tree | Sportsman Ladder

Vehicle Requirements:

• Any door-slammer type vehicle permitted

• Any modifications, any tires, any vehicle weight, and any power adders allowed

Electronics:

• Trans-brakes and 2–3 step rev-limiters permitted

• Delay boxes, throttle stops, crossover boxes, or any “reaction-time related” electronic aides are strictly prohibited

Start & Pairing Format:

• .400 Pro Tree

• Sportsman ladder used for pairings

6.50 Index

1/8 Mile | 6.50 Index | .400 Pro Tree | Sportsman Ladder

Vehicle Requirements:

• Any door-slammer type vehicle permitted

• Any modifications, any tires, any vehicle weight, and any power adders allowed

Electronics:

• Trans-brakes and 2–3 step rev-limiters permitted

• Delay boxes, throttle stops, crossover boxes, or any “reaction-time related” electronic aides are strictly prohibited

Start & Pairing Format:

• .400 Pro Tree

• Sportsman ladder used for pairings