A driver suit meeting SFI 3.2A/15, gloves and shoes meeting 3.3/5.  SFI approved head and neck restraint device mandatory.  All Drivers will be required to wear a jacket and pants or suit meeting SF spec 3.2A/15.  3.2/20 blowers and prochargers.

SN 2000 or newer or SFI 31.1, 31.2, 41.1, 41.2 mandatory.  Any supercharged or nitrous assisted vehicle must use a 31.2 or 41.2 full-face helmet. Helmet shield must be down during run.  

5 lb. fire extinguisher system mandatory.  Minimum 1 nozzle on drivers side in front of feet.  1 nozzle in front of the engine.  Safety pins must be red flagged.  (See IHRA general regulations page 112 in IHRA rulebook.)

Bead locks mandatory on all entries-maximum width 16”. Liners will be allowed per NHRA rules.  

Legal.  (Ex:  Davis Technologies)

All vehicles must have an onboard bolted on starter and battery.  Drivers must start the vehicle from inside the car.  Maximum of two batteries.  Battery jump off will be allowed behind the wall only.  (If a vehicle loses fire inside the wall if must be able to start on its own.  If directed by a Piedmont official to shutoff, the vehicle will be allowed a jump start inside the wall one time.)   Blowers may remote start.

Electronic RPM limiters allowed on converter equipped supercharged entries only.  The use of pneumatic limiters is permitted.  No aids such as optical sensors, down track studder oxes and throttle stops allowed.

No billet blowers. Overdrive limitations.  The maximum supercharger allowed will be 1471.  The maximum overdrive on any hemi head or high helix supercharged combinations with billet heads and billet blocks will be at 21%.  Conventional cast blocks with billet heads or conventional heads will run at 40%.  Maximum supercharge overdrive limits is 50% for standard roots.  Supercharged entries 5.14 rear end ratio (final drive maximum).  Hemis run a 4.56 rear end ratio and are limited to 3 forward gears.  The maximum length from the front of the supercharger drive pulley to the leading edge of the rotor is 15 inches.  Offsetdrive pulleys may not be used to add to the number listed above.  The use of spacers, modified cases or attaching methods to move the supercharger rearward in excess of the specified amount is prohibited.  A belt guard shielding both fuel and oil lines is mandatory.  Electronic fuel injection, nitrous oxide, intercoolers and variable speed devices are prohibited.  The maximum height of the injection system may not exceed the height of the roof.  The injector scoop may not be more than 16 inches forward of the center of the front cylinder or 10 inches behind the center of rear cylinder.  OEM manufactures supercharger case mandatory.   The top opening may not exceed 11 inches in length and 5 inches in width.  481X combination must run @ hemi overdrive rule.