April 27, 2017

2017 Street Stock Rules

2017 Street Stock Rules

TIRES: Any Hoosier or Ar 500, American Racer KK704, G60, Any Asphalt ​NASCAR Pulloffs 10″ wheels and tires ok on pulloffs only , and DOT. 8 Inch Rims & Tires Only. Beadlocks allowed on right ​side only.

Carburetor:
Holley 4412 500 cfm 2 barrel only. No 4412hp. No porting or polishing. No changing of ​​boosters, or altering base plate and throttle shafts in anyway. Carburetor will be ​​checked with a no-go gauge top and bottom​​​​​​Carb spacer-May run 1” maximum carburetor spacer may not protrude into intake ​​manifold. Maximum gasket thickness .070”

Engine:
​1. Steel heads, block and oil pan only.
​2. OEM passenger vehicle production block only. No GM Bowtie, Ford SVO or ​Chrysler W blocks.
​3. Aftermarket blocks allowed but must run G60 tire
​4. Castings and fittings cannot be changed, no machine work on outside of engine.
​5. No cubic inch limit.
​6. NO roller cams or liters allowed. Full roller rocker arms allowed.
​7. Flat tappet cam/lifters only. No mushroom lifters. Cannot alter lifter bores.
​8. OEM firing order cannot be changed.
​9. Steel or aluminum water pumps allowed. ‘Wet’ sump oiling system only.
​10. Accumulator allowed – cannot be located between seat and door bars.
​11. Below are the modifications that are allowed:

  • ​​Aftermarket valve covers
  • ​​Valve cover breathers
  • Screw-in studs
  • ​​Poly locks
  • ​​Aftermarket valve springs
  • ​​Guide plates
  • ​​Claimer oil pans
  • Reduction pulleys OK
  • ​​Stud Girdles

​​12. 4. Radiator must be mounted in front of engine. Cooling system may be ​​​modified. Overflow tubes must be directed to ground.

Engine Rules Packages:

  • Option 1-
    ​368 Cubic Inches or smaller will run at 2850 LBS, Will run any aluminum or cast ​iron intakes (no custom sheet metal), no porting or polishing, and can run up to an ​8” Spoiler.
  • ​Option 2-
    ​Unlimited Cubic Inches Will Run at 3000 LBS, Will Run Edelbrock (2701, 2716, 2176, ​3721, or 2181), Weiand (7547-1, 7515, 7516, 7545, or 8323), any low rise stock 4 ​bbl intake (no porting or polishing, webbing on top may be removed up to 1”, and ​can run up to a 4″ Spoiler.

Chassis:
​1. Any American OEM full body rear wheel drive passenger car 1964 or newer. ​May use a registered stock replacement XYG metric chassis. Must be verifiable.
​2. Trucks:
​​May be built from full size, short-bed, regular cab ½ ton truck
​​May move rear axle to top of leaf spring
​​Must retain stock wheel base and motor location
​​Must conform to all other applicable Street Stock rules

Weight:
1. Track option to enforce a minimum weight of 2850 with motor option 1 and 3000 ​​with option 2, after race with driver in car. NO TOLERANCE.
​2. Wheelbase must remain stock(+/- 1inch) Chevy and Ford 117” Dodge 115”
​3. Bed cover may be used but is not required
​4. Bed cover must be bent up or down on rear to not be a danger to other cars, the ​​bend may be used as the spoiler if wanted
​4. Minimum wheelbase of (107) inches required for all cars. Maximum (2”) ​​difference side to side permitted.
​5. Full frame cars must retain front frame horns. Rear of frame behind rear tires, no ​​further forward than one inch behind factory seam, may be replaced in OEM ​​location with two inch by three inch steel tubing with minimum 0.095 inch wall ​​thickness, same length as material removed. Factory seam must remain visible.
​6. All uni-body cars must have front frame and rear frame tied together. Frames may ​be “X” braced. No front wheel drive, or 4 wheel drive frames permitted. ​​​7. All frame cross-members must be unaltered frame may be notched for fuel pump ​​clearance. Must remain in stock location (exception: transmission cross-member ​may be altered or removed, horn may be removed from center of front cross-​member, and ​weight-jacks may be added (see sections 10 and 18). Must have a 360 ​degree drive-shaft loop no more than 6” behind the front u-joint. Must be minimum ​0.250” x 2” steel or 1” tubing.
​8. Rear bumpers may be fabricated of round tubing with a minimum 1.250 O.D. ​​(maximum 2 inch) 0.083 (maximum 0.250) wall thickness. Rear bumpers may not ​extend past the width of the body. Front bumpers may be OEM or fabricated with ​​round tubing minimum 1.250 O.D. (maximum 2 inch) 0.083 (maximum 0.125) ​​wall thickness. Corners must be bent and round. Ends of tubing must connect ​to front frame horns.
​9. Motor mounts may be aftermarket and engine may be moved back. #1 spark plug ​​may sit no further back than upper joint center line.

Roll Cage:
1. Main cage must consist of continuous hoops, minimum 1.666 inch O.D. (1.750 ​​recommended) with a minimum 0.095 wall thickness (low carbon or mild steel ​​recommended). Four post main cage required and must be properly welded to ​​frame, NOT floor pan. Poor or missing welds may be deemed unsafe by a track ​​official and may result in disqualification.
​2. A minimum 1 crossbar (minimum 1.666 O.D.) required in top halo and must be ​welded diagonally. Rear halo must be “X” braced. Front and rear down bars must be ​tied side to side. Top door bar must be a minimum of 36 inches inside to inside of ​front and rear down bars. Must be a minimum of 26 inches at bottom of top halo ​measured inside to inside of front and rear down bars. Must be a minimum height of ​16 inches from top of door bar to bottom of halo. With helmet on and driver ​securely strapped in driver head must not protrude above bottom of roll cage. All ​bars within reach must be padded with a material accepted by track officials, flame ​retardant recommended.
​3. Minimum of (4) 1.666 O.D. or (3) 1.750 O.D. horizontal door bars required on ​driver side (minimum 0.095 wall thickness). Horizontal door bars must be mounted ​perpendicular to frame and must have a minimum of (4) uprights from frame to top ​door bar.
​4. Steel door plates made of 18 gauge or 0.049 inch minimum thickness must be ​securely welded to outside of driver door bars. Plate must cover from top door bar ​to rocker and must extend from rear down bar to 5 inches in front of front edge of ​seat. Plate must be visible for inspection.
​5. Rear kickers (down bars) and fuel cell protection required (minimum 0.083 wall ​thickness), front hoops are allowed. If front hoop is not used must have two front ​kickers (down bars) welded to frame no further back than front of upper a-arm. ​Fuel cell protection and front kickers or hoop must be a minimum 0.083 wall ​thickness and 1.250 O.D. A maximum of (2) additional bars may be added for ​radiator protection not counting bar tying frame horns together and must be within ​confines of the body. Fuel cell protection must be same height as fuel cell and extend ​from frame rail to frame rail (maximum 1.750 O.D. tubing allowed) and must remain ​inside confines of the body.
​6. All vehicles MUST have tow loop or strap mounted front and rear and must be ​easily accessible.

Rear Suspension:
​All components and mounts must be steel. Suspension type must match type of ​frame used.
​All rear suspension must be stock-type. (no 3-link, 4-link, etc.)
​Metric Cars
​No bearing type or offset bushings allowed. Lower control arm mounts may be 7.5 ​inches long maximum. A total of 5 holes may be drilled to allow for lower control ​arm adjustment. Fabricated rear trailing arms allowed and must remain stock ​dimensions.
​Upper control arms must be level side to side and non-adjustable and must remain ​stock dimensions, may be fabricated with 2×2 tubing.
​No independent rear suspension. No sway bars, pan-hard bars, chains or cables.
​Coil springs must be minimum 4.5 inches O.D. and non-progressive.
​Weight jacks allowed and must be in stock spring location
​Leaf Sprung Cars
​Aluminum Lower Blocks And Shackles allowed on rear only no sliders no composite ​leafs
​Leaf spring Camaros may use Crysler leafs front leaf mount must remain in stock ​​location up and down and side to side. may only be moved front to rear to retain ​​factory wheel base.

Front Suspension:
​All components and mounts must be steel, unaltered OEM, in OEM location and ​match frame, except for upper a-arms. Upper A-frames may be replaced using ​aftermarket upper A-frame (steel or aluminum cross shaft allowed). Bottom A-​frame may be replaced using aftermarket lower A-frames must retain stock ​dimension and must have bushings. Bolt on spindle savers allowed. Upper A-frame ​mount may be non-adjustable steel weld on and may be moved from OEM location. ​Bolt pattern must match OEM mount bolt pattern.
​Magnet must stick to all components.
​Weight jacks allowed. May not be adjustable from inside driver compartment. Must ​be in stock location.
​Coil springs must be minimum 4.5 inches O.D. and non-progressive and 1 piece.

Shocks:
​1. One unaltered steel body shock, nonadjustable, per wheel. No coil-over shocks, air ​shocks, remote reservoir shocks. No Schrader or bladder type valve allowed. No ​coil-over eliminators.
Body:
​1. 1964 or newer American OEM stock passenger car bodies or aluminum ​​aftermarket pro stock bodies allowed aftermarket bodies must have at least one ​​door bend on each side (NO LATE MODEL WEDGE BODIES, MODIFIED, or SLAB ​​BODIES). must have an approved stock car nose piece. All cars must have all four ​​fenders and must resemble a production vehicle (MUST RESEMBLE A STOCK CAR). ​​All bodies must be approved by officials. All glass, plastic, upholstery, rear seats, ​​lights, mirrors and chrome must be removed. Interior tin or other covers not ​​allowed. Doors must be welded or bolted secure. All sunroof and T-top openings ​​must be covered with sheet metal. Must have nose pieces. Fabricated bodies must ​​have 8” tall strip of sheet metal secured to deck lid and quarter panels on the rear of ​​body above bumper.
​2. Can use an after market fiberglass steel or aluminum roof.
​3. Front OEM firewall may be replaced using steel fabricated firewall, 18 gauge or ​minimum 0.049 inch thickness. Top of firewall can be no further back than 12 ​inches from the back of engine block, measured horizontally. Bottom of firewall can ​be no further back than rear of oval body mount frame hole. Dash must not extend ​more than 24 inches back from top of firewall. Dash must be flat, rear can be no ​higher than front, except for cowl in front of driver. At a minimum firewall must go ​from inside of frame rail to inside of frame rail. OEM floor pan may be replaced ​using steel fabricated floor pan, passenger floor pan not required but interior ​decking would then be required around driver. 18 gauge or minimum 0.049 inch ​thickness, securely welded to frame. Floor pan may be replaced from front firewall ​to rear halo supports. Floor pan must remain flat/OEM appearing from frame rail to ​frame rail, can be no higher or lower than top or bottom of frame rail. Exception is ​maximum drive shaft tunnel. Tunnel must remain similar to OEM tunnel in size. ​Interior may be decked, must have access panel for inspection. Rear firewall may be ​aluminum or steel and no further forward than rear halo and no higher than bottom ​of rear opera windows. All holes in firewalls must be covered with metal. No driver-​adjustable devices allowed while car is in competition except brake bias adjuster. No ​mirrors. Hood must be secured by a minimum of four hood pins located at all four ​corners. No tilt front ends, hood must be separate from fenders. Back of hood must ​be sealed from driver area.
​4. Front nose pieces and rear tailpieces must be securely riveted or bolted in place.
​5. Spoilers are allowed with a max width of 60” not to exceed outer edge of body, ​max 9” of material height and no more than 3 supports allowed. Spoiler ends and ​supports may exceed 1” height of spoiler center and are allowed a maximum length ​of 16”. No space between deck lid and bottom of spoiler is allowed.​

Appearance:
​a) All race cars must have numbers that contrast to body
​color and must be minimum 4 inches thick and 18
​inches tall for both sides and must be 4 inches thick
​and 20 inches tall for roof and must be clearly legible.
​All race cars must have numbers on the right rear
​corner of the back of the vehicle and must be
​minimum 4 inches tall.
​b) Officials reserve the right to approve or disapprove any image of lettering or ​sponsorship on any race car or pit vehicle entering race surface. Keep in mind this is ​intended to be a family fun facility.
​Maximum seven inch visor allowed on front windshield area. This includes ​additional tape.
​Maximum one inch wide by two inch tall steel rub rails allowed – bolted flush to ​body.

Rear End:
​1. OEM and Ford nine-inch rear-ends and floater rear-ends are permitted, but ​must ​be mounted like stock rear-end for that make and model. No quick change ​allowed.
​2. Rear-end may be welded, mini spools and full spools allowed. No torque dividing ​differentials.
​3. Rear-end must be centered on chassis.
​4. One inch inspection hole in housing required.
​5. Gun-drilled or titanium axles are not allowed (axles must be made of steel).
​6. All mounts must be securely welded, no floating mounts.

Transmission:
​Automatic Transmission
​Must be OEM automatic
​Must have 10 inch working or dummy torque converter or coupler. Lightened flex ​plates are not allowed.
​At least one forward, reverse and neutral gear must be operational.
​Must have approved scatter shield constructed of minimum 0.125 inch by three inch ​steel, 270 degrees around flex-plate. Flex-plate must be full, recommend SFI ​approved. Manual bump starts allowed.
​Standard Transmission
​3 or 4 speed OEM transmissions. Must have at least one forward and one reverse ​gear.
​Flywheels may be lightweight. Must be able to stop and take off unassisted.
​Direct drive internal fluid assist style transmission is allowed. Brinn, Bert, Gator,etc.
​Must have approved scatter shield constructed of minimum 0.125 inch by three inch ​steel, 270 degrees around flywheel. Flywheel or flex-plate plate must be full, ​recommend SFI approved. No manual bump starts allowed.
Brakes:
​1. Steel, unaltered OEM, or unaltered OEM replacement, four wheel disc or disc ​(front) and drum (rear) brakes. Steel hat and rotor assemblies allowed on floater ​rear ends, must be stock diameter .Aluminum GM drums are not allowed.
​2. Aftermarket pedal assemblies with single or dual master cylinders allowed. No oil ​​bath front hubs. Hubs/rotors, axle flanges and drums may be changed to different ​​bolt pattern and larger studs. Must use OEM vented rotors. Drilling, lightening ​​and/or scalloping rotors are not allowed.
​3. Brake proportioning valve allowed on right front only and may not be within ​reach of driver.
​4. All calipers must be OEM steel
​5. Must have three functional brakes. Only right front may be omitted. Brakes will be ​tested!

Fuel System:
​1. Automotive gasoline or racing gasoline only! NO Methanol or E85. Additives of ​​any kind are not allowed.
​2. Electric or belt driven fuel pumps are not allowed.
​3. A limit of one (1) standard fuel filter is allowed between the fuel cell and the ​carburetor. Fuel filter cannot be mounted in the driver compartment. Cool cans are ​not allowed.
​4. No cool cans or cold air boxes or air cleaner duct work.
​5. Carburetor: One (1) properly installed carburetor is permitted. May use altered ​Rochester 2bbl, Motorcraft 2bbl, or Holley 0-7448, 0-80787-1, 0-4412, or 0-80583-1. ​May use a one and three-quarter (1 ¾) inch butterfly. See engine rules for intake ​specifications.
​6. Fuel cell must be commercially manufactured for racing applications. No boat or ​stock automotive fuel tanks. Must be securely fastened inside trunk area of race car. ​Fuel cells must be in steel container. All mounts must be made of steel and surround ​the fuel cell and attached to frame or roll cage.
​7. Must have check valve. Fuel cell vent, including cap vent, must have check valves, ​a flapper spring or ball-type filler valve.

Steering:
​1. All components must be steel unaltered OEM, in OEM location and match frame. ​​OEM steering column may be replaced with steel steering shafts (steering shafts ​​must have a joint every 5 ft., collapsible steering shafts highly recommended). Steel ​​knuckles only.
​2. Steering wheel and quick release (required) may be aluminum.
Electrical/Ignition:
​1. One 12 volt passenger car battery only, must be securely mounted between and ​above frame rails, and must be covered with rubber or non-conductive plastic. ​Battery must not be mounted in driver compartment.
​2. Starter must bolt in OEM location. Car must have capability of starting without ​being pushed or pulled. Car must leave initial staging area on demand, unaided, or ​go to rear of that race.
​3. Only one (with no live timing adjust) ignition box is allowed. Coil must remain in ​cap for HEI type ignitions. All ignition wiring must be accessible for inspection.
​4. High End Rev Limiters allowed, may use MSD P…se MSD PN 8728 or MSD box
​5. No unapproved cameras, transmitting or listening devices (exception is one-way ​RACEceiver radio by officials), timing retard controls, or digital gauges (including ​tach). No electronic monitoring computer devices capable of storing or transmitting ​information except memory recall analog tach.
​6. All wiring must be visible for inspection. OEM type alternator with internal ​regulator allowed. No electronic traction control devices.
​7. Kill switch required within easy reach of the driver. The switch must be clearly ​marked “OFF” and “ON”. All battery cables and electrical must be securely mounted ​and protected.

Exhaust:
​1. Round tube headers only. Headers must expel gasses away from the drivers ​compartment. No zoomies, or Tri Y, allowed. Exhaust may not protrude through ​hood or floor pan. Exhaust cannot be connected, no crossovers or equalizer tubes. ​All tubes must meet at one collector. No electronic devices allowed. MUFFLERS NOT ​​REQUIRED.