True to form, the IMCA sanctioning body has released their rule changes for 2019 early enough for teams to have sufficient time to interpret, and incorporate the changes into their racing program before the next season. The IMCA organization has always been good about getting the information to the builders and drivers quickly.
Addressed in the changes are aerodynamic and aesthetic rules for the Modified and Sport Mod divisions. According to the IMCA press release, IMCA President Brett Root explained the need tor nose piece rule changes. “We want to keep the open wheeled look of all these divisions,” Root is quoted as saying. “We have done that with the nose rules.”
The simple change in the Modifieds and both SportMod divisions, is the nose piece must be the same width from front to back, along with the free-standing spring height specifications on the front and rear suspension.
A change to the current trend in sail panels was also addressed: Maximum and minimum roof dimensions will include the sides when Modifieds, Northern SportMods and Southern SportMods are measured in tech. No bends or breaks will be allowed in sail panels for any of those divisions.
Also highlighted in the 2019 rule changes:
GM 602 crate engines manufactured after December of 2017 with Chevy Cap seals must have IMCA Cable-Lok Seals. All GM 602 crate engines produced prior to December of 2017 that utilize the GM breakaway bolt sealing system do not have to have IMCA Cable-Lok Seals.
Stock Cars must have an OEM appearing aftermarket plastic nose piece with a minimum eight inch ground clearance and also have specified front and rear spring heights.
Hobby Stock nose pieces must have a minimum nine-inch ground clearance. There’s a maximum 31-inch measurement from the back of the engine block to the front edge of the GM Metric roof.
The Hobby Stock front OEM fire wall may be replaced with a steel fabricated firewall. The front firewall must be vertical, 24 to 26 inches tall, and located no farther back than the rear of the oval frame hole. Fire walls must extend to the body.
New rules for six divisions are posted on the IMCA website. IMCA Late Model and IMCA RaceSaver Sprint Car rules will be announced later.