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Oct 15, 16, 17
Thunder Bomber/ Street Stock Classic Nationals
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CLICK HERE for printer friendly version of rules.
Limited Sportsman 2020
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Rules and/or regulations set forth herein are designed to provide for the orderly conduct of racing events and to establish minimum acceptable requirements for such events. These rules shall govern all events, and by participating in these events, all participants are deemed to have complied with these rules. NO EXPRESSED OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM PUBLICATIONS OF OR COMPLIANCE WITH THESE RULES and REGULATIONS. They are a guide and are in no way a guarantee against injury or death to a participant, spectator, or official. Harris Speedway retains the right to make all decisions and reserves the right to make any rule changes/amendments with dispute or appeal.
WE WILL ALSO HONOR 2019 CAROLINA AND 2019 CHEROKEE RULES
RULES BEING CLAIMED MUST BE LISTED ON HOOD WITH WEIGHT AND ANY WEIGHT BREAK
Cars claiming Carolina rules may only run American Racer stocker tires on front axle. Rear axle must be Hoosier 500 series or Emod.
ALL VEHICLES, COMPETITORS, AND TEAMS SUBJECT TO 2020 HARRIS GENERAL RULES AVAILABLE AT THIS LINK: http://harrisspeedway.com/hms/rules.asp?TOPIC_ID=%2011350
· No nitrous or traction control
· cars must be neat in appearance
· car must weigh 3200 pounds with driver after race
· 8" wheels max
· Hoosier medium or hard emod or 500 series tire or American Racer Stocker
· may run beadlocks but must face outside
· may run offset rims and wheel spacers
· brake adjusters ok
· racing pedal assemblies ok
· OEM brake calipers only - doesn’t have to match year and model - NO ALUMINUM
· headers are legal
· fuel cell must be mounted inside of trunk with firewall between driver and fuel cell
· seat must be securely fastened to frame and/or roll cage
· track fuel only - must pass track test
· cars must have number on sides and top and able to be read by score tower
BODY - visual protest only
· from ground to top of spoiler cannot exceed 50"
· must have floor pan under driver
· 1970 or newer American made car
· no station wagons, trucks, jeeps, or convertibles
· rear of car may be opened
· 13" minimum door and rear glass opening
· may run a 8" by 72" spoiler and may run a small bracket to support it - can be adjustable
· may notch frame for fuel pump only
· interior can be boxed in
· after-market nose piece ok
· breather may protrude through hood
· all firewall holes must be covered
· may replace firewall with steel or aluminum metal
· may replace dash with sheet metal - interior metal cannot be higher than dash
· may use Lexan in rear side windows
· bumper cannot exceed past the inside of the rear tire or must run a bumper cover
· may run side spoilers 12" long by 6" in height
WHEEL BASE / FRAME
· must match make and model of car, 1" tolerance +/- allowed
· no shortening of frame, must be stock, no x-bracing beyond front or rear firewall
· no cutting of frame except for fuel pump but fuel pump must not protrude beyond frame rails
· fords may run perimeter framed chassis with unified body - frame must have stock dimension with no alterations for year model claimed
· may tie front and rear suspension together, under rocker panel only
· can run 30" square tubing from rear bumper, length between eyes must be stock
· #1 spark plug must be even with front ball joint - no tolerance
ENGINE - BOTTOM END
· any OEM stock size engine with flat top pistons - not to exceed 365 c.i.
· 2 eye brows legal
· stock type fuel pump
· only vacuum systems powered by exhaust legal
· any steel rod - no aluminum or titanium
· Crankshaft:
· may use 305 crank with a 350
· no knife edging or lightening, etc.
· steel crank must weigh 50 lbs.
· cast crank must weigh 48 lbs.
· no stroking or de-stroking
· for balancing purposes the counter weights may be turned - must maintain 1.950 for steel and 1.750 for cast or may drill
· scat
· eagle
· crower #ps95121 lunati or calis
· gm crower steel crank #sp-95121 is the only gun drilled crank that is legal
· only way to balance is drilling of the counter-weights
· no mallory or plugs
· aftermarket oil pan is ok
· no dry sumps allowed
· any timing chain - no belt or gear drives
· any oem chevy or ford cast block straps or spayed caps ok
HEADS
· stock straight plug heads only
· no Vortec heads
· may run dart head part number 10110010F - must be box stock
· 47 CC MIN
· any size diameter valve spring
· screw in studs and guide plates legal
· any roller rocker arm only - steel or aluminum only
· any steel or titanium retainer
· 3/4 inch blend ok in oem heads only
· no porting or polishing
· steel valves only
· stock stem diameter
· chevrolet max valve size - 2.02 intake and 1.60 exhaust
INTAKES
· stock cast iron
· no porting or polishing
· may run any aluminum intake but no modifications
CARBURETOR
· holley 650 cfm #0-4777 - no modifications
CAM
· solid lift flat tappet cam
· maximum .500 lift at valve with .025 lash
· no swapping of any lobes - must be in stock order
FLYWHEEL AND CLUTCH ASSEMBLY
· triple disc clutch is ok
· must have stock automatic OEM flywheel
· minimum 5 1/2" diameter clutch
· no carbon fiber
TRANSMISSIONS
· must have at least one working forward and reverse gear
· no lightening of gears
· may remove unused gears
· may run bert or brinn transmission
DRIVE SHAFT
· minimum of 1 1/2" diameter
· no carbon fiber
IGNITION
· stock type ignition
· no altering firing order
· brass gear is legal
· no msd with boxes
· no crank triggers
REAR ENDS
· may run jacking screws
· 9" ford or floater ok
· disc brakes ok - doesn't have to match make of car
· can cut top of trailing arms for pinion angle
SUSPENSION
· leaf spring cars can run 1 adjustable lowering block on right side only
· coil spring cars may adjust bottom trailing arm on right side up to 1" from stock length
· top front a-arm type ok - all others must be stock
· adjustable buckets on front springs ok
· shocks must be in stock location, may move for travel only, cannot change angle
· lowering blocks ok
· adjustable buckets in rear ok
· all hook up points on chassis must be in stock location
· rear shock location must be stock, may move for travel only
· cannot change angle of rear shock
· aftermarket bushing in a-frames and trailing arms ok but may not swivel
· may run heim joints on rear shocks only
· may run any racing shock that is self-contained
· no exterior reservoir allowed gas or oil
· may cut center of upper spring bucket to extend springs for clearance but must retain stock
outer part of bucket with 7" hole for spring to go through.
PROTEST AND CLAIM RULE
· protest bottom - $600
· protest any 3 items - $300
· acceptance fee - $100
· track keeps $100
· could be required to add weight to cars from other track who normally do not race at Harris speedway to adjust to the rules - will be significant weight though
· Tech man has final say
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Posted by Travelers Rest PR
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