2026 Tour-Type Modified Rules

DOWNLOAD PDF VERSION: SNMP – 2026 Tour Type Modified Rules

24TH ANNUAL JOHN BLEWETT III MEMORIAL NORTH-SOUTH SHOOTOUT

In Memory of Charles Kepley

 

2026 TOUR TYPE MODIFIED RULES

 

CHASSIS

  1. Any safe modified race car with a wheelbase between 104 and 110 inches.
  2. Maximum tread width of 84 inches, measured wheel bead to wheel bead. 

 

REAR END

  1. Rear ends must be locked. Non-quick-change rear ends are allowed.

 

MOTOR PACKAGES 

  1. Any Steel Ported Cylinder Head must run a gauge-legal 650 CFM carburetor with a 1” maximum aluminum spacer.
  2. Any Steel Non-Ported Cylinder Head must run a gauge-legal 750 CFM carburetor with a 1” maximum aluminum spacer.
  3. 23 Degree Ported Aluminum Head must run one of 2 options:
    1. Option A: Must use a NASCAR-legal Holley 390 CFM Model 4150 HP Series carburetor with bridged boosters. Boosters may be shortened to .500” (No other alterations allowed) and use a 2” aluminum spacer. With Option A, TRI-Y Headers are permitted.
    2. Option B: Must use a Holley 390 CFM Model 4150 HP Series Carburetor with Open Booster (Bridge Removed). No tapering of the ID or OD of the booster, and must use a 1” aluminum spacer. With Option B, headers must be 4-into-1. Straight-tubed or Stepped (1 ¾ to 1 ⅞ ONLY). Merge collectors are NOT permitted.
  4. 21 Degree Dart Aluminum Head must run one of 2 options:
    1. Option A: Must use a gauge-legal Holley 750 CFM Model 4150 HP Series Carburetor with bridged boosters and use a 2” aluminum spacer. 
    2. Option B: Must use a gauge-legal Holley 830 CFM Model 4150 HP Series Carburetor with bridged boosters and use a 1” aluminum spacer.
  5. 18 Degree Aluminum Head or Ford “C” Head must run a NASCAR-legal Holley 390 CFM Model 4150 HP Series Carburetor with bridged or standard height boosters. 
    1. Option A:Bridged Boosters may be shortened to .500” and use a 1” aluminum spacer.
    2. Option B: Standard-height boosters may use a 2” aluminum spacer.
  6. NASCAR Spec must conform to the 2026 NASCAR Rule Book and are allowed one single carburetor spacer with a maximum of 2”.
  7. Progressive Sealed must have seal from Progressive or Legendary Garage and must use a gauge-legal Holley 750 CFM Model 4150 HP Series Carburetor and use a 1” aluminum spacer.Tri Y Headers are allowed. 

 

AIR FILTER

  1. Paper or K&N filter ONLY.
  2. Maximum of 5” height by 14” diameter with solid metal top ONLY (NO CARB HATS).

 

WEIGHT RULE

  1. 6.80 lbs per cubic inch plus 175 lbs, with a minimum of 2600 lbs, 56% max left-side weight with driver in the car.
    1. EXCEPTION: NASCAR Spec motor and Progressive Sealed motors must weigh a minimum of 2650 lbs, 56% max left-side weight, and must meet all NASCAR spec motor requirements per the 2026 NASCAR rule book.

 

BODY

  1. Must run a tour-type appearing body. Must be approved by SNMP/NSS Officials. 

 

QUARTER PANELS

  1. The front lower edge of the rear quarter panel behind the rear wheels must not be higher than the lower edge of the rear corner rail bar.
  2. The rear lower edge of the quarter panel must not be higher than the lower edge of the rear vertical body panel.
  3. The lower edge of the rear quarter panels must not have a ground clearance of less than 7.5” at any point behind the rear wheels.
  4. The height of the rear quarter panels must be a minimum 31.5” and a maximum of 35” when measured from the ground to the top of the rear quarter panel at the spoiler mounting point.

 

SAIL PANELS

  1. The lower edge of the rear roof quarter panel, when measured at any point from the leading edge to the trailing edge, must not be more than 2.5” inward from the upper edge of the rear quarter panel on both the left and right sides.
  2. The rear roof quarter window panel must remain parallel with the upper edge of the rear quarter panel on both the left and right sides.

 

ROOF

  1. Roof height must be a minimum of 39.5” measured 6” back from the leading edge of the roof.
  2. Roof will not have more than 3” of rake.
  3. A roof intrusion plate is required on any car with a fiberglass or non-steel roof

 

GRILL OPENING

The opening must be at least 120 square inches.

 

SPOILER

  1. Maximum spoiler height of 8”. 
  2. Maximum spoiler width of 48”. 
  3. Must be clear polycarbonate. 
  4. Maximum height of 44” from the ground to the top of the spoiler with the driver in the car. 
    1. The car must have all four (4) tires on the asphalt/concrete when the measurement is taken. 
    2. Tires must be inflated to 15lb RF, 14lb RR, 12lb LF, & 10lb LR.

 

TIRE RULE

Hoosier Tires will be used for this event. The left-side tires will be M20 compound, and right-side tires will be M30 compound. This will be a six (6) tire event: four (4) tires to qualify on and two (2) change tires. The change tires will be up to the team’s choice for their selection. No tire softener or any other tire alterations are permitted. Nitrogen will be allowed but must be used in the tire impound area. 

 

Emergency Tire Rule: Teams will be able to have two (2) emergency tires: One (1) M20 left side and one (1) M30 right side tire. These must be purchased from the track during this weekend. Teams can use the emergency tires without penalty prior to Lap 35 of the feature race. After Lap 35, teams will get a one (1) lap penalty per tire used. To get your qualifying tires from impound, teams must bring the two (2) emergency tires to the tire impound area before they are released. These tires will be marked and released to the teams at the drop of the green flag, along with the two (2) change tires. 

 

Practice tires will be available for purchase at the track starting at 1:00 PM Friday, November 6th, and throughout the event. 

 

Race tires will not be able to be purchased until 2:00 PM Friday, November 6th. This will take place after the pill draw to determine the order of selection in the drivers’ meeting on Friday at 1:30 PM. Starting from pill 1, teams will select their four (4) tires for qualifying; then, in reverse order of the pill draw, teams will select their two (2) change tires. 

 

Once race tires are selected by the teams, they will be scanned and marked by officials. These tires must stay in the impound area until released by officials at 12:50 PM, 10 minutes before inspections begin. 

 

FUEL RULE

Sunoco Racing Fuel will be available for purchase at the track for this event. A minimum of 20 gallons must be purchased from the track. 

 

QUALIFYING PROCEDURE 

Qualifying will be as follows: 

  • Qualifying order will be based on the pill draw completed at the Friday, November 6th drivers’ meeting. If a team representative is not there, officials will pull a pill for the team. 
  • Green, White, Checkered Single Car Qualifying starting after Vintage Mod Qualifying

 

Starting positions will be determined from the aforementioned Qualifying session as follows:

  • Top Twenty-Eight (28) cars out of time trials 
  • The following four (4) Provisionals:
    • 1 provisional for the highest point-getter (among the Top 15) from each of the following series, not already qualified: 
      • 2026 SMART Tour
      • 2026 Tri-Track Open Modified Series
      • 2026 Race of Champions Modified Tour
    • 1 provisional for the first entry received from NY, NJ, or PA (not already qualified or eligible for other provisional)
  • Special Note: If more than 32 Cars – Twenty-Four (24) cars out of time trials, Four (4) from Last Chance Races, and Four (4) Provisionals, determined in that order. (i.e., last chance qualifiers will be determined before provisionals are selected.)

 

If all cars do not have the opportunity to qualify due to unforeseen circumstances, the starting field will be determined by the following procedures: 

 

Starting positions will be assigned in order of the fastest times of the competitor’s final practice session. The designated event director will determine if all cars have had an opportunity to practice. If NO practice for this event is held, all starting positions will be assigned to cars in the order of date of entry received.

 

RACE PROCEDURE

The SNMP Track Race Procedures will apply to this event. These procedures will include the double-file “cone” restarts and the use of the “free pass car” procedures. Only lead lap cars that are not under penalty or involved in the caution will be permitted to take the cone. All lapped cars, including the “free pass car,” must restart at the rear of the longest line of the lead lap cars. Race procedures will be explained during the pre-race driver/crew chief/spotter meeting.

 

This race will be run with Controlled Cautions, which will last four (4) Pace Laps. Pace Car speed will be decreased to allow crews more time. If 50 consecutive green flag laps occur, the tower will throw a competition caution. These cautions will be controlled so teams can make pit stops. Notice: Competition cautions will not be thrown in the last 25 laps of the race. 

 

Controlled Cautions will be held at every caution, as long as one green flag lap has been completed by the entire field since the prior Controlled Caution. If the entire field is unable to complete one green flag lap, a Controlled Caution will not be held, and we will immediately line the field up according to the rules below.

 

Controlled Cautions will be held with the following rules: 

  1. Only four (4) crew members can work on the car during the pit stop. 
  2. Only two (2) new tires will be allowed per team during the race. Only one (1) new tire can be put on per caution. 
  3. Gas and Tires cannot be done at the same caution.
  4. Any other adjustments can be made during controlled cautions, but after four (4) laps, the car will lose its spot.

 

All work during the Controlled Cautions must be performed in the car servicing area (pit stall) on the pit road. Cars are not required to pit during the Controlled Caution. Once the tower states the Pits are open, cars can pit anytime during the Controlled Caution, but after four laps are completed by the Pace Car, vehicles still in the pits WILL lose their spot. At the end of the Controlled Caution, cars will be lined up in their respective running order at the time of caution in the following order: 

  1. Lead lap vehicles that did not pit. 
  2. Lead lap vehicles that pitted and returned to the track in the proper time allotment. 
  3. Lap(s) down vehicles that did not pit. 
  4. Lap down vehicles that returned to the track in the proper time allotment. 
  5. Lead Lap vehicles that pitted and did not return to the track in the proper time allotment
  6. Lap(s) down vehicles that pitted and did not return to the track in the proper time allotment
  7. Free Pass vehicle. 
  8. Vehicles under penalty. 

 

Caution laps will not be scored or counted in the Feature Event in the prior laps before pits open for controlled cautions. The race may be concluded with unlimited restart attempts at a green/white/checkered finish unless, due to time restraints or adverse conditions, a limit may be set and communicated to the competitors.

 

ADDITIONAL RULES

All teams must have a  Red MyLaps or Yellow Westhold transponder for the event. Teams can rent a transponder from the track. ALL OTHER TRANSPONDERS MUST BE REMOVED. 

 

Each team must have a spotter during practice, qualifying races, and the 125-Lap Feature. All spotters must scan the Track frequency (451.6625) and must always have radio contact with the driver. The frequency being used will be made available at the Tech Shed as well.

 

All cars, parts, or equipment will not be considered approved even if they have passed through inspection at any time or any number of times unobserved or undetected.

 

NOTE: All engine fluids, lubricants, solvents, and fuels must be disposed of properly in accordance with track rules and procedures and all other applicable federal, state, and local laws and regulations. Disposal is available at the track behind the tech building next to the fuel tanks. Ask an official for assistance.

 

Any interpretation or deviation of these rules and procedures is left to the discretion of SNMP and NSS Officials, whose decisions are final.

 

NOTE:

If you are unsure of any rule, whether contained within these rules or not, it is the responsibility of the driver to question this prior to any competition. You may contact the SNMP/NSSs Technical Director for clarity. It is the responsibility of the Driver, NOT the Technical Director or Tour Promoter or Track Representative, to ensure that their race car meets the specifications noted prior to entering any Event.

 

Last Updated: 9/23/26