The IHRA announced their Torco's CompetitionPlus.com Pro Modified rules for 2007 on Friday afternoon. The following represents the new regulations.

 

The IHRA announced their Torco's CompetitionPlus.com Pro Modified rules for 2007 on Friday afternoon. The following represents the new regulations.

 

PRO MODIFIED
BODY: All body, front end and wing designs must be accepted by IHRA prior to competition.

WEIGHT MINIMUMS:
Nitrous Oxide Entries: 2,425 lbs. Supercharged Entries: 2,700 lbs.
Accepted Nostalgia body styles may deduct 25 lbs. from minimum weight. Example: ‘53 Studebaker, ’55 or ‘57 Chevy and Buick. ‘38 Chevy and ‘41 Willys may deduct 50 lbs. from minimum weight.
Late model entries add 25 lbs. to minimum weight. Example: Cavalier, Cobalt, Stratus, GTO, Mustang, etc.

CUBIC INCH LIMIT: Nitrous Oxide Entries – If 5-inch bore center combination is utilized then the cubic inch maximum is 820 cid OR if larger than 5-inch bore center combination is selected then the cubic inch maximum is 800 cid.

BELLYPAN: Permitted. Must extend beyond leading edge of engine and accessories and incorporate a 1-inch lip on the front edge of all units.

REAR-END RATIO: Supercharged Entries: 4.30 to 1 rear end ratio (final drive) maximum.

SUPERCHARGER CASE: OEM manufacturer’s case mandatory. Billet cases prohibited. The top opening may not be exceed ten (10) inches in length.

ELECTRONICS / DATA ACQUISITION: No sensors may be used to monitor track position, track or tire temperature or ride height other than shock travel. Sensors are prohibited from use on wheels or wheelie bars or on any other moving part other than the drive shaft.

STARTING LINE CONTROL DEVICES: Electronic Starting line RPM limiters (2-step) are prohibited on supercharged entries.