Street Stock Rules Page
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Revised Street Stock Rules as of 01/06/12
1.    Bodies must be a 1950 or newer American made sedan or coupe with a factory steel top.  No pickups, convertibles, front wheel drive, four wheel drive, or rear engine cars are allowed.  Cars with sun roofs or T-tops must have the roof covered with a min. of 20 ga. steel sheeting. 

All bodies must be made of steel and be stock appearing.  Altering, modifying, chopping, or channeling the body or frame is illegal.

3.    Doors must be bolted or welded shut.  Trunk lid and hood must be secured by bolts or pins.  No open hoods, holes cut in the hoods, and no hood scoops.  Hood and trunk inner panels may be removed.

4.    Bodies must be maintained.  Bodies must start the race night securely mounted.  Dents are to be knocked out and ripped fender/door/quarter panels are to be repaired.  Sharp edges protruding from the car will not be allowed. Track management reserves the right to disallow cars that are deemed dangerous and/or unsightly.

5.    All glass, chrome, upholstery, and loose panels must be removed.  No mirrors, horns, or lights.

6.    A stock OEM stamped steel floor pan must remain intact and visible.  Four (4) 2” x 3” rectangular drain holes permitted.  Holes are subject to tech inspector approval.

7.    The driver’s compartment must be separated from the engine with the stock firewall with all holes covered or plugged with a non-flammable material.  The trunk area must be separated from the driver’s compartment with a steel sheet that has no open holes and has a minimum thickness of 20 ga.

8.    The front inner fender wells may be removed.  The trunk floor may be cut out.

9.    Rear wheel wells may be cut out for tire clearance, but not to the point that it opens into the driver’s compartment.

10.  You may use factory front and rear bumpers in the stock locations with stock type mounts.  The area between the trunk lid and rear bumper must be closed in.  You may use after market nose or tail moldings with appropriate supports. Bumpers must be strapped to the front fenders and rear quarter panels by flat bar. The flat bar maximum size is 1/4” x 2”.

11.  Rear deck spoilers must be OEM or no taller than 4 ½” and no wider than the flat part of the rear deck area.

1.    The frame determines the make of the car.

2.    The wheelbase is to be 108” minimum on both sides of the car.

3.    “Sub frame” or “uni-body” type cars must have the front and rear frame assemblies tied together.  The roll cage must connect the sub frame assemblies.  Any frame may be X-braced.

The track scales are the final authority.

1.    Street stock cars must weigh a minimum of 3000 pounds
and a maximum of 3500 with the driver after the completion of the feature race.
2.   All added weights must be painted white with the car number on them.  All weights must be securely fastened to the car by at least two (2) ½” bolts and washers with locking nuts.  Weights may be either lead or steel flat or rectangular bars.

1.   Original OEM steering box that matches the frame is required.  Manual steering or power steering is acceptable with any PS pump.

2.   Quick steering adapters are allowed.

3.   A quick disconnect steering wheel is required.

Roll Cage
1.    A full perimeter four (4) post roll cage with an X-brace in the rear, rear kickers, and windshield center support must be used. Roll bar padding is recommended.
          A.  The roll cage must be securely welded to the frame.  Sub-frame or uni-body type cars must have four (4) plates measuring 6”x 6” x ¼” for mounting the roll cage posts.
          B.  Door inner panels may be removed to accommodate door bars and the roll cage.
          C.  A center bar from the dash to the roof and continuing to rear center of the roof halo is required.
          D.  Front and rear loops are mandatory.               
          E.  All cars must have a minimum of three vertical windshield bars in the driver’s windshield opening.  A windshield screen that will allow objects no more than ¾” through is required.

2.    For cars built after January 1, 2008, the roll cage must be constructed of steel tubing with a minimum diameter of 1 ¾” and a minimum wall  thickness of .095”.

3.    A minimum of three (3) horizontal door bars on each side constructed 1 ¾” x .095 tubing must be used.  Anti-penetration plates (10 ga. min. or 1/8th” thick.) on the driver’s door bars are highly recommended to cover the driver’s area in full around the door and feet area. Factory cabin structure in the feet area only, can be considered as anti–penetrating. Anti-penetration plates will be mandatory for cars built after January 1, 2008.

4.    There must be 2" of clearance between the drivers helmet and the roll cage.

5.    Absolutely no square tubing, galvanized pipe, or black iron pipe is allowed as part of the roll cage.

6.    A fuel cell protection bar may be used..  It must extend from frame rail to frame rail and be made of 1 ¾” dia. tubing. It can be no higher than the fuel cell and no lower than the trunk floor and must be inside the trunk area.

7.    Rub rails are highly recommended.
         A.  Maximum of 1” x 2” rectangular or 1 ½” round sch. 40 pipe or tubing with closed, tapered ends.
         B.  May extend from the rear of the front wheel opening to the front of the rear wheel opening.
         C.  Must be mounted or fastened with carriage type (round headed) bolts.  The bolt heads must be smoothed off so   as not to offer any cutting edge to a tire rubbing against it.  This is especially true if pipe is used.

1.    The suspension must be the original type.  No aftermarket J-bars or pull rods allowed. All suspension components must be in the stock locations.  Racing springs and racing shocks are allowed.  No coil over shocks or air shocks.  Modifying stock shock mounts is illegal. No weight jacks are allowed.  
2.    Tubular upper control arms will be allowed.
3.    Non-adjustable shims or spacers may be used to set the ride height and /or wedge front or rear.  The spacers are considered non-adjustable if the springs have to be removed to change them.

Drive Train
1.    Transmissions can be either automatic or manual.  They must be OEM type.  No aftermarket racing transmissions. Automatic transmissions must have a stock OEM type torque converter. Torque converters must have a minimum diameter of 10". Manual transmissions must have a single disc OEM type clutch, no multi-disc clutches or mini clutches. All flywheels with clutch setups must have steel scatter shield or blanket.  Aluminum flywheels, spuds, couplers, or hollow converters are illegal.

2.    Any stock passenger car, OEM, rear end is allowed.. 
Floater rear ends are okay, must use solid axles and steel spool.No gun drilled axels.

3.    The rear end must be welded or locked with a commercial locking device.  Detroit lockers, posi-track, limited slip differentials are illegal.  Traction control devices are illegal.

4.    A driveshaft loop is required.  It must be constructed of at least ¼” x 2” steel flat bar or 1” round tubing and be mounted no more than 6” back from the transmission yoke.  It can be 180 degrees under the driveshaft. Must be welded securely to the car or bolted with 4 – 3/8 bolts with large washers over sheet metal.  Metric cars that have a factory driveshaft securing loop may use the factory mounts and bolts or approved setup by Tech.

5.   The driveshaft and yokes must be made of steel only.  The driveshaft must be painted white.

Tires and Wheels
1.    Maximum wheel diameter is 15”.  Maximum wheel width is 8”.   A maximum 60 series “street type” tire is allowed.  The tire must have a factory installed DOT number.  Absolutely no mud, snow, fancy, exotic, trick, gumball, etc. tires are allowed. Tire grooving is

2.    American Racer KK704-G60 tires will be allowed.

3.    Tires cannot have chemical treatments applied while at the race track.

Steel and racing wheels are allowed.  No bead lock's or bolting the tire to the wheel.

1.    Disk brakes allowed for 2009.  Bias brakes or dual master cylinder brakes are allowed provided that they can not be adjusted by the driver during a race.

2.    Brakes on all four wheels must work properly.  The test will be that all four wheels must slide in a demonstration.  No brake shut off devices are allowed.

3.    Proportioning valves either adjustable or non adjustable are allowed as long as they are under the car or under the  hood.  They can not be in a place where they can be controlled by the driver in a race.

4.    Power boosters may be removed.

Engine and Carburetor
1.    The engine must appear strictly stock for the make of car (GM-GM, Ford-Ford, etc.)  Internal alterations are allowed.
         A.    360 cubic displacement or less. Compression of 10.5 or less. 1% error.
         B.    Engine may be set back, but not more than one (1) inch rearward of the centerline of the top ball joint to the                      centerline of the number one spark plug.   
         C.    The engine block and heads must be cast iron.  Heads must have original valve angle and location.    
         D.    Valve springs must have .195" wire, steel retainers, 5 full coils.
         E.    Flat tappet camshafts, with stock diameter lifters.
         F.    The intake manifold must be a stock cast iron 2 barrel intake.
         G.    All cars must run a stock 2-barrel carburetor.
                   1.  A Holley 4412 (500 CFM maximum) without venturi modifications is allowed.
                   2.  A maximum ¾” thick spacer plate is allowed.
         H.    The choke butterfly may be removed and the choke shaft holes plugged, but no other alterations are allowed.

Exhaust System
1.    The exhaust manifolds may be stock cast iron.  They may be center dump or ram horn type.

2.   Headers are allowed.  Fender well, exotic, or 180 degree headers are illegal.  The headers must be inside the frame rails and the exhaust must extend past the firewall.
     Not required until 2009, but would be greatly appreciated in 2008:

Ignition Systems
1.    Externally stock appearing distributors only, no magnetos or pick up coil systems.

Fuel System
1.    Mechanical fuel pumps only.  No electrical fuel pumps allowed.

2.    Stock gas tank must be removed
3.    An approved fuel cell must be securely fastened in the trunk area and be approved by the tech.

4.    There must be a check or "roll over" valve in the fuel cell vent.  The valve must be inline in a secured hose that ends at a point lower than the fuel cell bottom.

5.    Fuel lines that pass through the driver’s compartment must be encased in solid tubing with no breaks.  Steel braided hose, eg. Aeroquip, etc. is acceptable.  Maximum fuel line size is 3/8” ID.

6.    Gasoline only (pump or race gas allowed).  No methanol, alcohol or additives.

Cooling Systems
1.     Aluminum radiators and cooling spray bars are permitted.

2.    Water reservoirs must be secured by more than one strap in case of major accident or rollover.

1.    Battery must be in the trunk area.  You may use one of the following types of mounting.
         A.  Plastic “Marine Style” box (recommended)
                (1)    It must be solidly mounted with metal straps.  The mounting is subject to tech approval.
                (2)    The top must be securely strapped to the box.
                (3)    Battery must not be able to shift in box. All battery's and mounting will be approved by the tech.
         B.  If an IMCA style steel battery container is used, it must be welded to the frame or the roll cage in the trunk  area.

2.    All holes in the firewall (front and rear) that have wires or lines running through them must have grommets.

Race Seat
1.    All cars must have an approved aluminum racing seat.

2.    The seat must be fastened to the roll cage by a minimum of four (4) 3/8” bolts with 2” fender washers between the bolt head and the seat.

3.    Minimum bolt grade is grade 5.

Driver  Safety Equipment
1.    An approved safety harness is required in all cars and must be a minimum of a five (5) point quick release type.
         A.    The harness must securely fastened to the roll cage.  The harness must be an approved “bolt on” or “wrap                          around” type.
         B.    If the harness is a “bolt on” type, the minimum bolt size is 3/8”.  The minimum grade is grade 5.
         C.    Bolts can not be inserted through the harness webbing.  If this is done, the harness must be discarded.
         D.    The harness must be installed in such a manner to allow swivel action with no shear action (to avoid cutting,                      tearing, etc.)
         E.    The lap portion of the harness should cross the driver’s hip at approximately 45 degrees to the                                             perpendicular to the door.
         F.    The harness must have a readable date and can not be over six (6) years old.
         G.    The shoulder belts must be fastened securely behind the driver at or below shoulder level.
         H.    The race seat must be rolled or have grommets (to prevent shearing) where the harness straps pass through                      the sides, rear, and front of the race seat.
         I.    No portion of the harness may be worn, torn, or frayed.

2.    All drivers must wear at least a single layer fire suit.  A double layer suit or Nomex underwear under a single layer suit with fire resistant shoes, head/neck sock, and gloves are highly recommended!

3.    A SFI approved neck brace must be worn and fit the driver properly.

4.    A Snell SA2000 or later helmet is required.

5.    Driver’s window net is required. No passengers are allowed.

6.    Shoes will be worn, they must cover the foot and ankle completely.

Protest Procedure Rules
1.    Any Driver finishing in the top 5 of the main, wishing to lodge a protest must be standing next to the tech official with cash money in hand no later than ten (10) minutes after the Street Stock feature race.

2.    Protest costs are $150.00.

3.    If the driver refuses to submit to the protest inspection then the driver will forfeit all points and money earned that night.

4.    If no illegal issues are found then the protestor loses the money and $100 will go to the protested driver.

5.    If the driver is found illegal then the protestor’s money will be refunded upon validation with the Tech Inspectors.

       Tech Inspectors will be validated with the Racing Director in any decision for disqualification or fines.

Protest rules are found in the Track rules

1.   Oil lines in the driver’s compartment must be encased in tubing with no breaks.  Steel braid line does not have to be encased.

2.   If the transmission cooler is located in the driver’s compartment, it must be shielded from the driver.

3.   No transmitting or listening devices are allowed in the car.  No devices, except for a memory tachometer, that are designed to store information are allowed in the car.

4.   Each car must have a number on the door and roof.  The numbers must be at least 18” tall.  These numbers will range from 0 to 99 only.  The numbers must be a color that clearly contrasts to the color of the car.  You must get approval from the White Sands Speedway for your number.  Last year’s drivers have first pick, after that numbers are assigned on a first come, first served basis.  Once assigned, you may keep your number as long as you race at White Sands Speedway.

5.   Visiting cars with conflicting numbers will be required to add a "letter" to their numbers.

6.   Each car will have tow hooks or chains on the front and rear for wrecker hook-up.

This page was last updated: January 12, 2012