Sponsored by Shrader Performance
NOTICE: Rules are subject to change without notice.
Battle of the Underdogs is a racing class for all modular 2-valve and 3-valve powered vehicles.
Qualifying Information, Ladder Type, & Tree.
All run qualifying, Pro ladder, .400 tree, Heads-Up, 1/4 mile, courtesy stage (encouraged).
Engine must be a Modular 4.6/5.0/5.4/5.8 based V-8 Ford engine. Internal modifications are permitted.
Fox body and other swaps permitted.
Any radiator, water pump and cooling fan/fans permitted.
Any header size/tubing permitted. Open headers, downpipe ok. Bumper/Fender exit ok.
OEM or aftermarket tank in trunk or stock location. Fuel cell in engine bay prohibited.
All fuels permitted.
Any size turbocharger permitted. Twin turbos ok. Nitrous permitted with turbocharger.
Any size supercharger. Nitrous permitted with supercharger.
Wet and dry sump oiling systems permitted.
Air intake coolers and/or ice boxes allowed in passenger compartment.
OEM or bolt in 8.8 or 9 inch
Any transmission permitted.
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.
OEM or tubular stock type control arms required which must be attached in stock location.
OEM or aftermarket shocks/struts/springs permitted. May use coil overs.
STOCK TYPE SUSPENSION
Stock type suspension may utilize aftermarket, direct replacement type suspension components including aftermarket replacement shocks, springs, coil overs and/or control arms. All stock type 3-link and 4- link suspensions must maintain stock lateral angles and attachment points, but may be moved up or down on rear axle. Aftermarket torque arms permitted.
Stock, unaltered frame rails required. Sub-frames may be joined under car. If connector protrudes through floor, floor must be completely welded to connector. Stock front/rear sub-frames must remain stock, unaltered, and in stock location.
TIRES & WHEELS
Any tires permitted.
Spindle mount wheels permitted
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.
WINDSHIELD & WINDOWS
OEM glass or NHRA approved Lexan is required and must maintain a Ford OEM appearance. Optic Armor windows are ok. Braces allowed. If carbon fiber/fiberglass
doors are used Lexan windows with supports allowed.
Stock, unaltered firewall required.
Trans brake, 2 step, and aftermarket ECU permitted.