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 2014 Rule/Tech Updates:

The 2014 WISSOTA Rule Book is now available at http://wissota.org/wp-content/uploads/WISSOTA_Rule_Book_2014a.pdf. Any updates or clarifications needed during 2014 will be posted here and also published in All The Dirt! Racing News. If you have any questions pertaining to any car rules, contact: Bill Engelstad at (218) 262-5823 or (218) 208-7844, or bill@wissota.org.

Multi Class Rules:

2-4-14 Electronic Components
1. No electronic components are allowed in or on a race car or driver except those specifically allowed by WISSOTA and/or track. For example, Raceceiver, Transponder, GoPro or other such recording devices when mounted as per WISSOTA rules. No electronically adjustable shocks are allowed.
2. WISSOTA and/ or any WISSOTA track may confiscate and send in to manufacturer any ignition/ ignition controller to make sure it has not been altered and complies with class rules.

2-20-14 Composite Material Hoods
Late Model, Modified, Super Stock, Midwest Mod & Mod Four classes: Hoods must be aluminum and cannot be made of a composite material. Hood scoop can be made of a composite material.

5-29-14 Deck Heights
All deck heights will be measured at the center of the rear deck (back of car, center from side-to-side).

6-18-14 Spoilers
The trailing edge of all spoilers must be turned down a minimum of 30 degrees so it is below the top of the spoiler.

7-21-14 Deck Heights
You must adhere to your division’s deck height as stated in the 2014 WISSOTA rule book. Deck height is measured from the center (side-to-side) of the rear deck. The maximum deck height for your class is listed in the rule book. If you are found in violation by officials at any event, you will be disqualified from that race. Tech officials have been alerted to check deck height and no extra tolerance will be given. Your car’s deck height must not exceed the maximum measurement.

8-28-14 Timing Controls
No programmable timing control in ignition control/ignition box. No electronically controlled timing curves other than the Late Model GM CT525.
 

Late Model Rules:

1-22-14 Engine Setback. 
If your engine is setback more than six inches, you must place 25 pounds of weight in front of the mid plate.

5-13-14 Engine Setback.
Maximum engine setback for the spec engine, the GM CT525 and the GM 604 crate engine is 10". The maximum engine setback for all other engine combinations is 6".

1-22-14 Crate Engines.
Drivers using a GM crate engine in 2014 must abide by the following rules:
GM CT525
1. Car must say CT525 on the front roof post.
2. Mandatory ignition controller MSD P/N 6012. (This is used to check max. RPM)
3. Max. RPM 7200
4. Any Four barrel carb. – gas or alcohol.
5. Any headers.
6. Weight 2300.
7. 8" max spoiler allowed. (Revised 8-6-14, see below)
8. The CT525 is 1-1/2" shorter from the back of the block to the center of the #1 plug. If you do not move the 6" set back mounts, you will have to add 25 pounds in front of mid plate to comply with the rules.
Must follow all other 2014 WISSOTA Late Model rules.
 
GM 604
1. Car must say 604 on the front roof post.
2. Any four barrel carb. – gas or alcohol.
3. Max. RPM 6800
4. Any headers.
5. Weight 2250.
6. 10" max spoiler allowed.
Must follow all other 2014 WISSOTA Late Model rules.
 
7-7-14 Tires.
As of July 14, 2014, all Late Model tires used must be the WISSOTA stamped Hoosier WRS2-55, or the WISSOTA stamped Hoosier WRS-55 can be run on the right rear.
 
8-6-14 Spoilers.
As of August 6, 2014, all Late Models running the GM CT525 engine are allowed to run up to a 12" spoiler (see adjustment below).
 
8-20-14 Spoilers.
As of August 20, 2014, all Late Models running the GM CT525 crate engine or the GM 604 crate engine can run a maximum 10" spoiler and must run same size spoiler supports as all other WISSOTA Late Models.

Modified Rules:

2-13-14 Body Dimensions
1. Deck width and body width at the top of doors and at the deck can be a max. of 66"  and must be same width from front to back.
2. There is a 78" max. body width at the bottom of panels near the ground.

6-18-14 Tires
As of June 17, the new Hoosier 35-W tire is legal on all positions on the race car. All other tire rules for the class remain the same as stated in the 2014 rule book.

Super Stock Rules: 

6-18-14 Tires
As of June 17, the new Hoosier 35-W tire is legal on all positions on the race car. All other tire rules for the class remain the same as stated in the 2014 rule book.

Midwest Modified Rules: 

2-13-14 Body Dimensions
1. Deck width and body width at the top of doors and at the deck can be a max. of 66"  and must be same width from front to back.
2. There is a 78" max. body width at the bottom of panels near the ground.

5-29-14 Nosepieces
Sides of nosepiece cannot be higher than nosepiece itself; must be flat side-to-side.

6-18-14 Tires
As of June 17, the new Hoosier 35-W tire is legal on all positions on the race car. All other tire rules for the class remain the same as stated in the 2014 rule book.

Street Stock Rules:

5-29-14 Shocks
Shocks cannot be mounted or run upside-down.

6-18-14 Tires
As of June 17, the new Hoosier 35-W tire is legal on all positions on the race car. All other tire rules for the class remain the same as stated in the 2014 rule book.

8-20-14 Air Ducts.
Air ducts are allowed as long as they are through the nosepiece or below the nosepiece. They cannot be any further forward than the nosepiece and can be no wider than the radiator.

Mod Four Rules: (none posted at this time)