Rules/Forms

1 1/4" minimum material diameter with wall thickness of [13 Ga.] .095". It fastens to the halo @ or in front of seat headrest. Out and down to top door bar or angle back to the top door bar or B bar that goes up to the halo One horizontal bar from extra bar to B bar. Does not have to be 1 1/4". All cars need one in 2024.

4-15-24 All cars with molded in diffusers on the back of roof are allowed for 2024. In 2025 there will be NO diffusers allowed.

4-15-24 The horizontal bar in the new intrusion/halo bar is mandatory. Must be installed by June 1 2024.

5-7-24 Hoods must be able to be removed without taking air cleaner off. [SAFETY]

9/19/24 - Stock appearing cast iron brake calipers allowed the rest of this year. Next year look for updates on caliper in the rule book for 2025.

1/18/24
Wissota is aware of some new shock technology this is coming out. We at Wissota will not be allowing this technology in our Late Model Class. We will be releasing the rule wording soon.

2024

7/16/24 - Adjustable Bump Stop Cups are not allowed.

2024
5/22/24 - Are allowed a max. of 1/2" total travel limit material on shocks.
7/16/24 - Adjustable Bump Stop Cups are not allowed.

2024

7/16/24 - Adjustable Bump Stop Cups are not allowed.

2/7/24
Front fender tops. Max. of 4" showing outside of hood on both sides.

Rear quarter panel tops. Max. of 4" showing outside of trunk on both sides.

All engine options must follow the exhaust / header rule on page 80 rule [H] of the 2024 Wissota rule book.

5/22/24 Decks can be aluminum they can run from back of hood to front of trunk. Nose filler panel, hood and trunk hold down/ lips must be steel as they are part of body.

5-28-24 Street Stocks are allowed a max. of 1/2" total travel limit material on shock shaft.

7/16/24 - Adjustable Bump Stop Cups are not allowed.

1/31/24
No light weight rear end gears allowed. [polished gears allowed]
No light weight / gun drilled axles allowed.

5-7-24 Engine side covers must be attached to frame and can not be mounted to door and can not go past mid plate.

7/16/24 - Adjustable Bump Stop Cups are not allowed.

2024
5/22/24

Fuel regulators are allowed.

Shocks must be stock type, No racing shocks. Shocks can not be take apart / rebuildable must be welded. Shock ends may not be removable. Must be same p/n side to side.

7/2/24
Transmissions found with the wrong gears in them will be a SPEED Infraction as stated in the Rule book with all the Penalties going with it. {NO Place in the RULE Book does it say you can take out or disconnect the POWER STEERING or the ALTERNATOR.} That will start to be checked July 8 and will be a DQ for that Race. All 3 of these will have to be fixed and showed to a tech Inspector before racing again. As for the AC Compressor we allow gutting the dash so you would have to take that out anyway and we don't want the AC liquid leaking all over.

ST. CLOUD, MN (December 18, 2014) – A diagram which outlines the specifications for frame measurements in the Modified and Midwest Modified divisions is available. Shown are the legal dimensions for the 1968 to 1972 Chevelle stub/frame. If your frame does not meet these measurements, please consult your chassis builder.

Officials of WISSOTA, USRA, and USMTS have produced a video tutorial which will help drivers, chassis builders and tech officials properly measure race car frames to ensure they meet 2015 rules and beyond. The following video helps to explain how Modified and Midwest Modified frames will be measured to ensure they comply with WISSOTA rules. If you have any questions, please contact Bill Engelstad at (218) 262-5823 or (218) 208-7844 or email him at bill@wissota.org.

The rules and/or regulations set forth herein are designed to provide for the orderly conduct of racing events and to establish minimum acceptable requirements for such events. These rules shall govern the condition of all events, and by participating in these events, all participants are deemed to have complied with these rules. NO EXPRESSED OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM PUBLICATIONS OF OR COMPLIANCE WITH THESE RULES AND OR REGULATIONS. They are intended as a guide for the conduct of the sport and are in no way a guarantee against injury or death to a participant, spectator, or official.

The race director shall be empowered to permit reasonable and appropriate deviation from any of the specifications herein or impose any further restrictions that in his/her opinion does not alter the minimum acceptable requirements. NO EXPRESSED OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM SUCH ALTERATION OF SPECIFICATIONS. Any interpretation or deviation of these rules is left to the discretion of the officials. Their decision is final.