Engine Diaper or Catch Pan is HIGHLY ENCOURAGED!
- NHRA Safety Rules Apply
- 1/4 mile
- Heads-Up
- Pro .400 tree
- Pro Ladder
- All Run Qualifying
- Courtesy Stage (Encouraged)
- Sunday Eliminations
Quarter Mile King is the premier quarter mile class at ModNationals.
CLASS RULES
Minimum Weight/Weight Breaks (all weights include driver)
No Minimum Weight
Engine
Engine must be a Modular/Coyote 4.6/5.0/5.4/5.8 based V8 Ford engine. Internal modifications are permitted
Cooling System
Any cooling system permitted. In cab intercooler tanks permitted along with under the hood and trunk.
Exhaust
Any header size/tubing permitted. Open headers, down pipe permitted. Bumper/Fender exit permitted.
Fuel Delivery System
Any fuel system permitted and fuel location permitted.
Fuel
All fuels permitted.
Turbochargers
Permitted.
Superchargers
Permitted.
Nitrous
Permitted.
Oiling System
Wet and dry oiling systems permitted.
Intake Manifold
Air intake coolers and/or ice boxes allowed in passenger compartment. Trunk mounted ice tanks permitted.
Rear End
OEM or Bolt in 8.8 or 9 inch
Transmission
Any transmission permitted.
K-Members
Aftermarket K-Members permitted, but must attach to the chassis using only the original factory OEM type mounting bolts in the factory mounting location. Motor plates ok. No part of the K-member may be permanently attached to the chassis. K-member may be modified in oil pan area to allow oil pan enlargement or removal.
Shocks/Struts/Springs
OEM or aftermarket shocks/struts/springs permitted. May use coil overs.
Suspension
Stock type suspension using a 3-Line or 4-link suspension. Parallel 4-link permitted.
Panhard Bars
Permitted.
Torque Arms
Permitted.
Wishbone
Permitted.
Minitubs
Permitted.
Wheelie Bars
Prohibited.
Chassis
All cars must retain complete stock chassis, floorboard, firewall, and frame rails. Frame rails may be modified in front of the strut tower. Notching of chassis for clearance is permitted. All cars can remove spare tire wheel well and cover with sheet metal.
Tires & Wheels
28/29″ are permitted
Wheels
Spindle mount wheels permitted
Body
OEM steel (fiberglass/composite if OEM equipped) body shell required. Aftermarket body parts are permitted as long as factory appearing and are limited to hoods, front bumper covers, fenders, doors, and rear deck lids. Hood is required. Any rear wing permitted.
Firewall
Stock OEM sheet metal firewall required – holes drilled are permitted
Electronics
Trans brake, 2 step, and aftermarket ECU permitted
Lights
Headlights and brake lights are required (one headlight may be removed for induction)
Windows
Lexan/Optic Armor or OEM Permitted