Wingless-Super-Sportsman-Rules

1. Driver driveline protection should include items such as driveline hoops, driveline web slings, butler bags or other device for foot and lower leg protection at the torque ball.

2. No carbon fiber driveshafts permitted, only Titanium, Aluminum or Steel will be allowed. Driveline disassembly may be required.

3. Quick change rears optional with steel axle or Winters aluminum spec rear axle. Sprint Car aluminum rear axles optional with a maximum tuber opening of 1.90 inches. Knock off optional.

4. All cars must be equipped with an approved style of quick release safety belt, shoulder harness, and anti-sub belt. All safety belts must be anchored to the frame. Shoulder harness must be fastened to the bracing bars and loop over a bar at shoulder height.

a. Racing Harness: All cars must have a Speedway approved type of five-point racing harness (minimum two inches wide) that is equipped with a quick release buckle unless otherwise designated. Be sure to regularly check your racing belts for damage such as fraying, tearing, etc. If this should occur, the belts should be replaced immediately. The division endorses the belt manufacturer’s recommendation that the belts be changed two years after the date stamped on the SFI tag regardless of the number of times the car has been raced. The racing belts are similar to a helmet, in that they are designed for protection in only one major impact. If you have had a significant incident, the manufacturer strongly recommends immediate replacement of the belts. Also, make absolutely sure that your five-point racing harness is totally secured and that you have pulled the straps as tight as possible anytime you drive the car.

b. Three-inch harness recommended. Two-inch dog bone style with a HANS device is acceptable.

5. Brakes: Brakes must be in good working condition at all times including in the pit area and on the racing surface. Inboard rear brake is legal, steel rotor only, no titanium rotor or hub. Left rear or right rear brake is optional. Dual piston calipers on any rear brake. Front brakes may be single piston calipers with aluminum rotors allowed. No titanium or carbon fiber rotors allowed.

6. The steering must be safe and meet approval of the technical committee. Power steering is allowed. Steel rod ends required on drag link. Tethers are mandatory.

7. Fire retardant driver’s uniforms and Nomex gloves plus arm restraints are recommended at all times when drivers are in the car on the racetrack. High back seats are recommended.

8. Rock screens are mandatory. Recommend two-inch square rock guard with side wings.

9. No electronic bleeders allowed at any time.

10. No driver adjustable shocks. No thru-rod shocks or electronic shocks are allowed at any time.

11. No carbon fiber parts including torque tubes, brake rotors, radius rods, steering components, and/or driveline will be allowed.

12. Wheels

a. Maximum right rear wheel width of 18-inches excluding bead lock. Maximum left rear wheel width of 15-inches excluding bead lock. Steel and/or aluminum wheels permitted. No plastic or carbon fiber wheels.

b. Both three and five mounting point wheel covers will be allowed for competition

c. Wheel covers having a minimum of 3 attachment points may continue to use dzus fasteners. Said dzus fasteners must be made of steel only.

d. No titanium wheel covers will be allowed.

13. Seats: Aluminum and/or carbon fiber containment seats will be permitted. All seats must be mounted to the frame as required by the seat and chassis manufacturer. All seats must be installed and used in accordance with the manufacture instructions.

14. Chassis Specifications

a. Roll Bars: Suggested material: 4130 normalized

b. Top Rails: 1 1⁄2 x .095

c. BottomRails:13/8x.095or11⁄2x.083

d. Roll Cage Upright: 1 3/8 x .083

e. Cage top cross members: 1 1⁄2 x .095

f. Upper Rails: 1 3/8 x .083

g. Engine can be no closer to the center of the rear axle than 44.5 inches.

h. Any questions, call before you build or buy.

i. Side and top cockpit intrusion safety bars: Highly recommended that frames have side and top intrusion safety bars. Top intrusion bars would be “halo” style. Side intrusion bars would be the “eagle style” kick out vertical or horizontal bars. Recommended style vertical bars intersect cage top rail 10 x 21 inches back of front upright and coincide with the halo if installed. Recommended minimum thickness 1 1⁄4-inch x 0.83-inch for vertical intrusion and halo bars, sissy bars should be a minimum of 1-inch x 0.95 wall.

i. Frame rails must be 2 x 4-inch rectangular tubing with a minimum wall thickness of .083. Box tubing must tie into rear roll cage and extend from rear of cage towards the front of chassis and be a minimum of 58-inches in length at the shortest point. Box tubing must have a minimum of 30-inches outside at the rear where it meets the roll bar.

ii. Tech officials have the option to disallow any car repaired in an unsafe manner.

iii. The wheelbase may not be less than 90-inches on the left side.

iv. Weight jacks permitted.

v. Drag links must be made of 4130 steel, a minimum of one-inch in diameter, and a minimum material thickness of .058 inches. Tie rod and left front radius rod must be 4130 steel with magnetic steel rod ends. Swaging of the 2 tubing for tie rod and drag link will not be permitted. The drag links must be tethered to the frame with a minimum of one-inch nylon webbing.

vi. Hollow and/or drilled bolts, fasteners, and/or heim joints (rod ends)

will not be permitted.

vii. Front axles must be made of steel only. The minimum front axle size will

be 2 3/8-inch diameter x .095-inch material thickness or 2 1⁄4-inch

diameter x .120-inch material thickness.

viii. Titanium nerf bars and/or rear bumpers will not be permitted. Nerf bars

and rear bumpers must be made from magnetic steel and/or stainless

steel. The bumpers must be a minimum of one-inch in diameter and have a minimum material thickness of 0.065-inches. The nerf bars must not extend past the outside edges of tires.

1. All left and right side nerf bars must attach to the chassis at three points. Two-point side nerf hoops will no longer be allowed.

2. The front bumper must not extend more than eight-inches from the frame and/or the measurement from the center of the front axle to the front of the front bumper must not exceed 23.5- inches.

3. It is highly recommended that a rear “basket” style rear bumper is used.

4. Must be mounted with nuts and bolts.

ix. Torsion arm stops will be mandatory on both sides of the front and rear

torsion bars. The retainer may be of the rod-type with a securing cap or insert with an expanding mandrel and/or any other approved torsion arm stop design. Torsion arm stops must be installed and used in accordance with the manufacturer’s instructions.

x. Weight Rule:

1. Minimum weight is 1700 pounds, no tolerance.

2. Any added weight must be painted white with poundage and car # on it.

Weight must be securely fastened with Grade 8, 3/8 or larger bolts with flat washers and lock nuts. Weight must be positioned in Driver cockpit area, no further front than back side of the motor plate and no further rear than the back of the drivers seat. Any weight that falls off of a car during normal racing conditions is open to disqualification and/or possible suspension (track discretion).

15. Body Rules

a. Only standard type Sprint Car bodies, tails, and hoods will be permitted.

b. Sheet metal hoods are at tech official’s discretion. No more than a 1 inch lip on

any part of the body

c. Side foils, rudders, and/or panels that extend beyond the rear of the cage

3 support bars will not be permitted.

d. Nose pieces and/or the top portions of the hood must not extend forward of the leading edge of the front torsion tube or similar position on a coil-over car. Torsion tubes must be positioned in what is considered a conventional location. The hood side paneling or other side body pieces must not extend forward of and/or below the front axle.

e. Sunshields that restrict the driver’s vision at the discretion of officials.

f. Wedges and/or foils underneath the racecar will not be permitted.

g. Pieces that are added to the basic frame to resemble, imitate, and/or be specifically designed to deflect, trap, and/or perform a pattern for air to travel in a directed manner, except for those used to cool and/or protect the engine and the brake system will not be permitted.

h. Mirrors of any kind, whether attached to the racecar and/or the driver will not be permitted.

i. The driver’s right-side opening must be minimum 10-inch vertical opening at any point and a minimum 21-inch horizontal opening at any point (Outlaw Bars Forward)

j. NoWickersofanytypeorstylecanbegreaterthan1inch

16. Engines

a. All engines up to 320 cubic inches

i. Engines limited to 320 cubic inches.

b. c.

ii. No aluminum engine block or heads. Main bearing caps must be iron or steel.

iii. Aluminum cylinder head IK200 is permitted. Intake & Exhaust Runners must

be untouched.

iv. No roller tappet cams.

v. Any piston, any valve, any steel crank, and steel rod.

vi. Stock dimension factory and aftermarket head and blocks.

vii. All engines must have a 3⁄4-inch inspection hole on either side of the oil pan

but must align with one of the main journals and must allow access by magnet or bore scope camera to the main rod/journal area without interference of windage tray or 2 x 4 frame rails. If not, oil pan must be removed for inspection at the track’s tech facility.

Stroker motor moving forward for 2026 will be decided in mid 2025.

Over 320 cubic inches

i. Block must be a standard production block or approved stock dimension

aftermarket block that was under 362 cubic inches originally. No

aluminum blocks. Chevy bow-tie block and Ford SVO19 blocks permitted.

ii. Crankshafts must be factory production or stock dimension aftermarket cast

iron or steel crank. Stroke must remain stock. Crank may be tuned a maximum of 0.040 under. Chevy stroke of 3.480 or 3.50, Ford stroke of 3.50 and MOPAR stroke of 3.31 or 3.45. No swapping of cranks. Ford SVO crank 4 with part number M6303-H351 permitted. MOPAR high performance crank with part number P4120312 permitted. All cranks must be a minimum of 46 pounds in weight.

iii. Rods: A production rod from a V-8 engine under 362 cubic inches. Modification of rod length prohibited. Rods, block, and crank to be used in the same combination that factory originally manufactured. Any stock dimension steel rod (no titanium) may be substituted. Stock dimension includes length, wrist pin location and journal size. Approved aftermarket rod must be in factory condition, no polishing or reworking. No addition or removal of metal other than normal balancing. Six-inch rods permitted in all motors.

iv. All engines must have a 3⁄4-inch inspection hole on either side of the oil pan but must align with one of the main journals and must allow access by magnet or borescope camera to the main rod/journal area without interference of windage tray or 2 x 4 frame rails. If not, oil pan must be removed for inspection at the track’s tech facility.

v. Flat top pistons only. Zero deck, piston may not be above the deck of the block.

vi. Any cast iron/steel cylinder head that meets the following parameters:

vii. AluminumcylinderheadIK200ispermitted.Intake&ExhaustRunners

are not to be touched, same rules as Steel Heads.

viii. 60cc minimum combustion chamber volume.

ix. 225cc maximum intake runner volume. No raised runners from factory

stock runner floor. (Steel Heads only)

x. No porting or polishing of runners or combustion chamber, machine or

chemical, except for 3⁄4-inch to match intake ports.

xi. No spread port exhaust configuration.

xii. Maximum 2.08-inch intake valves: maximum 1.625-inch exhaust valves; only valves with 11/32-inch minimum valve stem.

xiii. Factory stock valve angles; Chevy 23 degrees, Ford 20 degrees; 1 degree tolerance.

xiv. No titanium valves, steel, or stainless steel only. No titanium valve springs; any retainer/ keeper may be used.

xv. No relocation of rocker arm studs from factory stock; factory stock valve guide angle only. No relocation.

xvi. Clean-up of the valve bowl to maximum 80 degrees is permitted.

xvii. Screw in 7/16-inch studs are permitted.

xviii. Roller rocker arms are permitted; shaft rockers permitted.

xix. Angle milling is permitted.

xx. Spark plugs may be straight or angled. Casting and part number identifications must be retained.

xxii. No milling or machining for weight reduction.

xxiii. Raised valve covers rails are permitted.

xxiv. No restrictions on valve seats, valve guides, or spring seats.

xxv. Repair of cracks or gouges on cast iron and aluminum heads will be

permitted. Either welding or cast iron/steel tapered threaded plugs are permissible. If repairs are needed in a combustion chamber area, work is limited to that chamber only. Grinding and dressing of the repair is permitted, in the valve pocket or chamber area, only to the extent to blend the repair or install a valve seat as needed. Prohibited porting and polishing rules still apply outside the repair area. A repaired chamber must still meet minimum cubic centimeter (CC) rules. Similar repairs are permitted on cast iron engine blocks.

xxvi. Production valve or production replacement, steel, or stainless steel only. Any spring, any retainer permitted. Roller rockers permitted. Stock valve guide angle. No relocating valves. No titanium except for valve springs, retainers, and locks. Any steel/SS valve with 11/32-inch minimum valve stem. Max 2.08-inch intake and 1.625-inch exhaust. Stock valve guide angle no relocating valve guides.

xxvii. Flat tappet cams only.

xxviii. No mushroom or roller cams.

xxix. Block must be cast iron. All factory identification numbers and/or part numbers must remain on block, crank, and heads. Main bearing cap must be iron or steel.

d. General Specifications

i. Maximum of four barrels of carburetion. Single carburetor only. No super

chargers, fuel injection or turbo chargers.

ii. Two throttle return springs are required with one located for the

throttle pedal and one located at the carburetor linkage.

iii. Any approved intake other than a smoke ram or tunnel ram. Intake height

to be a maximum of 8.5 inches. Measured from the top of the carburetor bowl using a straight edge from the bowl to the #3 or #4 runner at the head and intake juncture.

iv. Balance assemblies optional.

v. All cars must be self-starting for the feature, clutch optional. No automatic

transmission. Stock configuration clutch must have a full scatter shield of at least 1⁄4-inch thick steel or an approved bell housing. Configurations running a flex plate only are permitted to utilize an aluminum housing.

vi. Fuel – Methanol only according to Federal Standards of Purity, Grade A or AA. No additives of any kind including top lube.

vii. No electric fuel pumps or pressurized fuel systems.

viii. Gear drive units permitted. No externally adjustable cam timing device.

ix. Any battery ignition. No magneto. No computer operated or controlled

parts. No traction control devices. Gel filled battery recommended.

x. The following ignition boxes will not be permitted for use:

1. MSD 6530

2. MSD 65303

3. MSD Digital Programmable 6AL-2

4. Fast Ignition 307222

5. Any device that changes or has the ability to change the ignition advance is not permitted.

xi. No needle bearing cam, crank, or rod bearings permitted.

Any car using an engine block and/or cylinder heads that are visibly cut, ground, or machined externally for the purpose of weight reduction must add 25 pounds to the car from the center line of the engine forward. Weight must be securely fastened but must be able to be removed to verify weight.

17. Tires

a. Any tire on any corner of the car, No tire rule

b. No alteration of tires, by chemical or other means, with the intention of changing

the compound/durometer of the tire to gain a competitive advantage is prohibited. Samples may be acquired at any time to be sent to a laboratory for comparison to the specified legal tires for the division

18. Handicapping Rules

a. First 2 races will be open draw for heat races and redraw for feature. (Unless any

of the first 2 races will be a time trial show.)

b. Starting with race number 3, heat races will be lined up by draw, at sign in, each

race.

c. Top half from heats will be inverted by season's average finish for feature starting

lineup.

d. Also starting race number 3, the previous feature winner that qualifies through

the handicap must start the feature at the rear of the handicap, no more than

half the field.

e. Any new driver that shows up after the first 2 races will be eligible to start on

the front row of the heat races and if said driver makes handicap, he/she will

start behind cars with a 2race average

f. 2 races establishes a driver's average finish and no penalty will be issued for

missing a race once a driver establishes an average finish.

Trial Shows/Timed Hot Lap Events:

19. All drivers entering the event (new rookie) will draw for their time trial slot or timed hot lap group.

20. Rookies must start in the rear of the heat race for at least 3 races. After 3 races, the top 5 in points will consult and decide if that Rookie is ready to draw for heats. Rookies will start the feature how they finished their heat.

21. Definition of a "Rookie" - Any person who has never run 3 races in a Wingless Sportsman.

Failure to allow a Path Valley Speedway tech official to do his or her job with the tech process will result in disqualification for that night.

Path Valley Speedway has the right to hand out penalties and suspensions to any other rule that is broken that isn’t listed above or discretion of any situation at Path Valley Speedway.