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2016 Pure Stocks

Please refer to all WISSOTA Pure Stock Rules

2015 Pure Stocks


Proctor Speedway/Amsoil Speedway

Pure Stock Rules

Pure Stock Questions Call:

Steve Loucks (218) 940-1126

Pure stock participants are also subject to LRA Rules available at ProctorSpeedway.com

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

The Proctor Speedway Board of Directors/Amsoil Speedway Board of Directors shall be empowered to permit reasonable and appropriate deviation from any of the specifications herein or impose any further restrictions that in their opinion do not alter the minimum acceptable requirements.  Any interpretation of, or deviations from these rules are left to the discretion of the Proctor Speedway Board of Directors/Amsoil Speedway Board of Directors, THEIR DECISION IS FINAL.

The insurance carrier determines age limit for the Pure Stock class may be subject to change.


  1.  Helmets are required and must be a minimum of a SNELL 2005SSA RATED.
  2. They must be worn at all times when the car is on the racetrack and must accompany the car at time of inspection.
  3. The helmet must have face shield, which must be in place when the car is on the racetrack.
  4. Head and neck restraint is recommended but not mandatory


  1. Driver’s suits of flame retardant material is mandatory
  2. Two piece suits.  Top and bottom must be worn at the same time.
  3. Suit must be in good condition. (No Holes) Suits in poor condition may prohibit you from being allowed to race.


  1. Safety approved fuel cells are mandatory.
  2.  Fuel cells must securely mount to the frame or roll cage.
  3. Maximum capacity of 32 gallons.
  4. No weight within the fuel cell mount.


  1. Loose objects will not be allowed in driver’s compartment.
  2. Clamp or bolt on weight is allowed in the trunk area only!  Must be painted white with cars number on it.
  3. No weight further back than the trunk interior.
  4. No weight may be inside of bumpers.


  1. Must have a 5-point harness with crotch belt.
  2. Competition shoulder harness and lap belt at least 3” wide is required.
  3. No OEM factory shoulder straps or belts allowed.
  4. Metal to metal buckles are required on the shoulder harness, lap belt and crotch belt.
  5. The shoulder harness must be mounted at least 5” below the driver’s shoulders.
  6. Full sized window nets are mandatory.
  7. All Harnesses must be securely mounted to cage or frame.
  8. 8.      All belts and shoulder harnesses should be no older than three (3) years.



  1. Must be painted white.
  2. Drive shaft hoop is required and must be constructed of at least the equivalent of 3/16” x 2” steel and must be mounted no closer than five (5) inches and no further than nine (9) inches from the center of the u-joint at the back of the transmission.


  1. All cars must have working brakes on all four (4) wheels at all times.
  2. Stock type brake systems only.
  3. Must be able to lock all four (4) brakes at any time.
  4. Proportioning valve may be removed.
  5. No aftermarket proportioning valves or shut off valves allowed.
  6. Brake booster must be present.


  1. Main cage must be a minimum of 1 ½ inch O.D., .095 Mild steel tubing or .062 chrome molly tubing. DOM tubing recommended.  All cages must be arc welded.
  2. Must be a ¾ to full width roll cage.  No ½ cages.
  3. All welded joints must be properly notched.  No collapsing, hammering or smashing of the tubing to join them.  All tubing must include full radius weld.
  4. All cages must have a minimum of a 1 ½ inch diameter tubing extending vertically from where the front pillar bar and halo meet, down to the top door bar on the driver’s side of car.  The same is recommended on the passenger’s side.
  5. All cages must have a main roll bar X-braced. All halos must have one cross bar of at least 1 ½ inch tubing.
  6. Minimum of three door bars on the left side door (drivers side door), excluding the frame, a fourth door bar is strongly recommended.  A minimum of 16ga steel plate must be welded from top door bar extending down to at least the bottom door bar, extending length of the drivers compartment.  Minimum of two door bars in the right side door (passenger side) excluding the frame.
  7. Roll cages must be frame mounted in at least six (6) places.  If side rails are used they must be flush with the body.
  8. The side door bars must be welded to the front and rear of the roll cage members.


  1. The exhaust system must be mounted securely and any joints between the pipes and/or the muffler must be welded (no clamps).
  2. Exhaust system must be mounted in such a way as to direct spent gases away from the driver’s compartment and away from areas of possible fuel spillage.
  3. Stock cast iron rear dump exhaust manifolds only.  No center dump exhaust manifolds or headers.
  4. Heat risers may be removed.


  1. All cars must have a complete factory production stock (steel) body. No handmade body
  2. Body must match frame. No intermarriage between manufacturers (GM to GM, etc). External body must be stock and in stock location.  No after-market bodies.  No boxed in cockpits.
  3. Fire walls must remain stock and in stock location.  Front must have factory stock mounts and must match mounting holes in frame.  Floorboards may only be cut to receive cage with a maximum clearance of 2 inches. Any excess material removed must be replaced with sheet steel only.  Trunk area must remain stock. (No aluminum or plastic, etc.)
  4. ½ of the windshield area will be covered with mesh, and three (3) securely mounted steel bars, minimum 3/8 solid steel
  5. Anything you can unbolt you can remove.
  6. No plastic parts
  7. Rear inner fender wells may be separated from the fenders, but cannot be removed.
  8. Wheel wells may be trimmed but must remain stock appearing.
  9. Rear Nerf bars cannot extend outside the body.
  10. Rub bars are not allowed.
  11. Headlight and taillight openings may be covered with steel.
  12. No ground effects, skirts, or spoilers allowed.
  13. Nose cones are allowed.
  14. No tube bumpers. May use square stock behind factory steel cover.
  15. Stock bumpers from other makes/models allowed.
  16. Bumper ends must be rounded.   No jagged or sharp ends.


  1. Any American made full-framed car with a minimum of 108-inch wheelbase.(Tolerance 1”side to side)
  2. No four wheel drives, no front wheel drives.
  3. Two chains per bumper must be mounted to the frame to secure front and rear bumper.
  4. 110-inch minimum wheel base sub-framed cars permitted for Ford and Mopar.  No GM unibodies. Sub-frames must be tied together.
  1. No independent rear suspension cars.
  1. All Pure Stocks must weigh a minimum of 3200 pounds including the driver.


  1. No mirrors or radios of any kind allowed in the vehicle at any time.


  1. Batteries must be securely mounted and shielded
  2. Batteries mounted inside the passenger compartment of the vehicle must be in a marine case and must be securely mounted to the vehicle with at least one (1) 2”nylon strap with a metal fastener.
  3. 12-volt batteries only.  One 12 volt battery only. No voltage increasing devices.
  4. No weight on or in battery mount.


  1. Carburetion: OEM only, Quadrajet (GM), Motorcraft (FORD), Thermal quad (MOPAR)
  2. No racing fuel or additives. (92 Octane)
  3. Fuel must be street legal pump gas.
  4. Choke may be removed; all other components must remain stock.  No carb spacer.
  5. Holley part #4412 500 CFM will be allowed with 1 3/8” spacer with gasket.


  1. All front and rear suspension must remain stock for year, make, and model.  All suspension must remain in stock position/location as intended to be used by the OEM.  No altering of suspension allowed.
  2. Stock gas or hydraulic street shocks only. No coil over shocks. No air shocks, 50/50, heavy duty ok.  Side to side size must match. Shocks must have identical numbers on side to side match.
  3. Stock springs only.  Springs must remain in stock position/location (no cutting of springs) and no extra spacers may be added.  Right and left springs must be a matched pair on front and rear of vehicle.  Height of springs can vary no more than  ½ inch, when matched rear to rear, front to front. No progressive springs allowed.  No over load springs.
  4. No offset upper A arm shafts allowed.
  5. Upper A arm bolts must not exceed stock length.  Any shim ok.
  6. Sway bars must be connected. Shims must be the same height side to side.
  7. No extended length ball joints
  8. No improved geometry center links
  9. No more than 4 degrees of camber allowed.
  10. C-Clip eliminators are allowed.


  1. 1.      7” and 8” wheels any offset are allowed.
  2. 2.      No wheel spacers
  3. 3.      26 ½ “ or 27 ½” Hoosier Tires are allowed.
  4. 4.      M & S, or all season radials only. No snow tires.
  5. 5.      1” lug nuts are highly recommended.
  6. 6.      Straight shaft steering ok, factory columns may be removed.  No quick steer devices, stock style pumps only, no remote reservoir.


  1. 3 speed automatics only.  All gears must remain in transmissions.  Stock working torque convertors only.  11 inch diameter minimum.  Rear ends must be stock for year, make and model.  Differential gears must match rear end (7.5” or 8”, etc.) and may not be modified to fit.  Mini spools or welded gears only, no posi units.  Open differential allowed.
  2. Hardened axles on both sides is mandatory.
  3. Transmission adapter plates allowed.


  1. 1.      Points will go to the car.  Drivers names must be given the first night the car races if there will be more than one driver.


  1. Heads allowed:



14010201 10065205 10065207 10159551 10159553 12509859

14014415 14014416 14014440 14020555 14022301 14022601

14022801 14039122 14039121 14101081 14102187 354434

358741 376450

FORD 302

(D80E, D70E, D50E). f1ze, f3ze, f4ze

  1. Maximum valve size: GM (1.86 intake, 1.50 exhaust), Ford (1.78 intake, 1.46 exhaust), Mopar (1.78 intake, 1.50 exhaust)


  1. Lift may not exceed 420. 421 will be illegal.
  2. Hydraulic cam only, no solid, no roller.
  3. Valve shims are allowed.


The maximum engine over bore permitted will be .030

  1. 307 Olds, 305 Chev, 302 Ford, and 318 Mopar.  All motors must be stock OEM.  No intermarriage.
  2. No fuel injection/turbo
  3. No HP stamped motors (HP=228.305)
  4. Stock or stock replacement, cast dished pistons.  No cutting dishes in flat tops.
  5. No performance enhancing work on heads and block.  Heads and crank may be trued .010 only maximum one time only.
  6. No grinding of castings, including block.  Exceptions see ENGINES #5.
  7. No vortex heads/intakes.
  8. No interchanging of rocker arms, ratios.
  9. No shaving or grinding of engine block.
  10. Degreeing of cams and offset key in crank is allowed.
  11. Double roller timing chain allowed.
  12. No screw in studs.
  13. Pinning of studs allowed for repair.  Max of 6 per head.
  14. Stock length push rods 5/16 diameter only.  Ball tips OK.
  15. No balancing motors.
  16. Factory cast iron or aluminum intakes only.  Number must match CID of motor.
  17. Stock OEM replacement ignitions only.  No vacuum advance lockout.  After market plug wires allowed.
  18. Any copper or aluminum allowed.
  19. Must have coolant overflow tank, and must be mounted with the engine compartment.
  20. After market gaskets allowed.  After market bolts allowed.
  21. After market air filters allowed.
  22. Harmonic balancers must be at least 6 ¾”diameter.
  23. Hi-volume oil pumps OK. Pickups can be bolted or welded.  Stock oil pans only, no baffling, trap doors.
  24. Valve shims are allowed.


If the rules do not specifically allow a part or component, or do not allow specific alterations or modifications to a part of component than that part component of modification is disallowed.






Any race car competing in the feature event, which: Has a driver who executes a protest with a board member or track official prior to the start of the feature race and has tendered the required protest fee in cash.



$100.00 for the top end or $250.00 for both top and bottom end.

$100.00 for the transmission.  $100.00 for the suspension or driveline.  Two (2), items only.

The upper end teardown includes, but is not limited to, the removal of the carburetor, gaskets, valve covers, intake manifold, valve train components and heads.

The lower end teardown includes, but is not limited to drive shaft, springs, front and rear, rear end and all suspension parts and components.



If, after teardown, the engine or racecar is found to be legal, 100%of the protest fee will be paid to the protested driver, If after the teardown, the engine or racecar is found to be illegal, 100% of the protest fee will be returned to the protesting driver.



After the feature race, a track official will notify the driver of the relevant racecar that his racecar has been protested.  The protested driver shall then proceed directly to the

designated area for inspection and teardown pursuant to the protest.  Track officials and allowed representatives will then proceed, in accordance with the class protest, to tear down the engine or suspension of the protested racecar.



A driver may only protest one car per race.  Any driver protesting a car within the last 3 weeks of the regular scheduled season will match the tear down with his own car.  Example: If you protest shock and springs, motor, etc. you will remove yours for inspection also.

Only the Board of Directors has the final word on the legality of the racecars involved in a protest.  No alcoholic beverages allowed during teardown.

The Proctor Speedway/Amsoil Speedway and the Board of Directors reserve the right to inspect, teardown and enforce the Pure Stock rules at any time prior, during or after the race program and retain the right to enforce all the rules and penalties herein written.

No person shall prevent or interfere with the protest procedure.



Proctor Speedway/Amsoil Speedway reserves the right to impound any or all parts of the protested racecar.



If any engine parts or suspension, drive train parts are found to be illegal whether discovered through a post race inspection or teardown as a result of a protest or in connection with inspection by racetrack official there shall be a fine up to $200.00, and or a suspension up to thirty (30) days, loss of all points earned to date, and forfeiture of all money and awards earned for the event.  All penalties and sanctions shall be at the discretion of Proctor Speedway/Amsoil Speedway Officials



Proctor Speedway/Amsoil Speedway and the Board of Directors will confiscate any illegal parts.

Confiscated parts become the property of the Proctor Speedway/Amsoil Speedway. Parts will be sold and any money will be added to the pure stock point fund.



If a driver declares an intent to protest, and tenders the required fee, and then the driver changes his/her mind and withdraws the protest then the driver forfeits all money and awards for the event, and shall lose all points earned to date.



A driver, who refuses to allow an inspection of teardown pursuant to a protest, shall be subject to the penalties and sanctions listed above.



Protested car’s driver, or one (1) person selected by protested driver must be present, pit crew as selected prior to tear down, Proctor Speedway/Amsoil Speedway Board members, protesting car’s driver, track official and security.


Permanent link to this article: http://proctorspeedway.com/rules/pure-stock-rules/