SECTION 13 MINI STOCK RULES

MINI STOCK

1. ELIGIBILITY

Any driver with the proper NASCAR license (Charger or above) that has not finished in the top five in Grand American Modified or Late Model Stock in the previous year.

2. COMPETING MODELS

Year models 1975-2005 American or import autos. No station wagons, Jeeps, convertibles or trucks.

3. CAR WEIGHT

3-1: All American made cars must maintain a minimum weight of 2000 pounds. 3-2: All Foreign cars must maintain a minimum weight of 2050 pounds. 3-3: All weights are with driver in car. 3-4: Added weight must be painted in white in block form of no less than five pound blocks (no pellets). Added weight must be securely bolted in place. No weight may be added to the outside of the frame rails or ahead of the front spindles or behind the rear axle or inside the driver’s compartment. Dislodged weight cannot be returned to car for weighing after race. 3-5: All American made cars must maintain a weight of 1 pound per CC of engine size. 3-6: All Foreign cars must maintain a weight of 1 pound per CC of engine size, plus 50 pounds. 3-7: Left side weight (with driver in car) may be no more that 55 percent of total car weight. 3-8: Correct minimum car weight must be displayed on the right front upper door of the car. 3-9: Engine size in cubic centimeter (CC) must be displayed on the hood of the car, and must be readable from the left (driver) side of the car.

4. CAR BODIES

4-1 GENERAL BODY REQUIREMENTS A: Body must maintain original dimensions as from manufacturer. B: Floor pan, trunk floor, front and rear inner wheel wells must remain stock, and in stock location. Fabricated floor pans, trunk floor, front and rear inner wheel wells not permitted. C: Manufacturer of body and engine must be the same GM in GM, Ford in Ford, etc.  Aftermarket Stock Appearing Bodies are permitted in 2008.  Bodies must be stock appearing in all respects.  No fiberglass, aluminum or plastic bodies permitted.

4-2 SPOILERS A: Front spoilers must maintain a minimum ground clearance of 5 inches. Front spoiler must be a minimum of 5 inches from the leading edge of the front bumper. B: Rear spoilers may be a maximum of 5 inches and no wider than deck lid.

4-3 WINDSHIELD A: All cars must be equipped with a full front windshield. B: Windshield must be in stock location. C: Windshield must be Lexan, minimum 1/8th inch thick. D: Two steel support bars must be installed behind windshield, 1inch wide by 1/8th inch thick.

4-4 REAR WINDOW A: Rear window is optional. B: Rear window must be installed in original position if used. Only clear polycarbonate glass may be used in the rear window opening. The polycarbonate glass must be the same thickness and formed to the same shape as the original equipment glass. No tint permitted. The rear window must be secured with a minimum of two metal straps on the outside not less than 1/8 inch by one inch wide evenly spaced, and bolted to the roof at the top and the deck support panel at the bottom. The inside of the rear window must be supported by at least two (2) metal braces permanently mounted without any adjustments.

4-5 SIDE WINDOW/WINDOW SCREEN A: All side window glass must be removed. A nylon mesh screen must be installed in the left side door glass opening. The window screen must be a rib type made from 3/4 inch wide, maximum one (1) inch nylon material with a minimum one (1) inch square opening between the ribs. The minimum window screen size shall be 22 inches wide by 16 inches high. All window screen mounts must be a minimum 1/2 inch steel rod on the bottom and a minimum one (1) inch wide by 3/16 inch flat steel or a minimum 1/2 inch diameter steel rod on the top with mounts welded to the roll cage. The window screen, when in the closed position, must fit tight and be secured with a quick release type latch at the top in front only. B: Only clear polycarbonate glass may be used in the quarter window.

4-6 HEADLIGHTS/PARKING LIGHTS A: Headlight and parking light openings must be covered.

4-7 REAR VIEW MIRRORS A: Rear view mirror will be permitted. Wink type three-dimensional mirror permitted with a maximum width of 26 inches. Rear view mirror cannot extend outside of the car.

4-8 DASHBOARD A: All cars must have a complete dashboard. Fabricated dashboard allowed.

4-9 FIREWALL A: Firewall must remain stock and remain in stock location. Fabricated firewalls not allowed. B: A rear firewall of not less than 22 gauge magnetic steel must separate the driver from fuel cell. C: The firewalls must be sealed and welded in place.

4-10 DOORS A: Door panels must be a minimum 20 gauge steel, remain in the stock position and have the original contour. B: Doors must be attached in an approved manner.

4-11 FENDERS AND QUARTER PANELS A: Fenders and quarter panels may be trimmed for tire clearance only. The inner fenders may be trimmed 3” and a crush panel installed to fill Gap between the inner fender and the quarter panel or front fender. B: Original contours of the factory body must be followed.

4-12 GRILLES A: Grilles may be covered with unpainted screen wire attached to the grille only. B: Screen wire must be porous. C: Closed grilles will not be permitted for racing. Grille may be taped for qualifying. D: Grille opening must be no wider than radiator. No ducting of air past radiator into engine compartment. E: All air that enters the grille area must pass through the radiator core.

4-13 HOOD/ROOF A: Hood must maintain stock configuration may not be altered for air cleaner or engine clearance. B: Hood must lay flat and fit with no holes or bubbles in the center. C: Hood must be sealed front and rear to prevent the introduction of outside air into the engine compartment. D: Roof must be stock for make and model of car.

4-14 REAR DECK LID A: Rear deck lid must be in operating condition. B: Trunk around fuel cell must be complete.

4-15 BUMPERS A: Front and rear bumpers must remain in standard location for make and model of car.

4-16 IDENTIFICATION AND MARKING A: All car number configuration and design is subject to approval by Track Officials. Only single or double-digit numbers will be permitted. The size, color, and style of numbers must be adequate to permit prompt identification by Track Officials at all times. Numbers at least 18 inches high, excluding borders and silhouettes, must be neatly attached to or painted on both sides of the car on the center of the door. Door numbers must be a minimum of four (4) inches in width, and slant no more than 30 degrees from vertical. The tops and bottoms of all numbers must be even (not staggered). Two (2) digit numbers must not overlap. A number 24 inches high, excluding borders and silhouettes, must be neatly attached to or painted on the roof, reading from the driver’s side. Block type numbers, as large as possible, must be attached or painted on the uppermost corner of the right side windshield and the right rear taillight cover. The use of number decals is acceptable of Track Officials determine that the number is legible. B: Ace Speedway may refuse to permit, or require the removal of, decals, identification, and advertising of any kind on a car for any reason. Ace Speedway may restrict or assign the size or placement of decals, identification, and advertising of any kind on a car for any reason.

5. ENGINE

5-1 ENGINE LOCATION A: Engine must remain in stock location. B: No adjustable engine mounts allowed.

5-2 GENERAL ENGINE SPECIFICATIONS A: Four cylinder engine only. No Cosworth or rotary engines allowed. B: All engines must be used in the model of car for which they were manufactured. C: No factory or after-market high performance components will be allowed in the engine or drive train.

5-3 ENGINE BLOCK A: Block must be standard factory production with standard external measurements in all respects. B: Internal polishing, porting and/or relieving will not be permitted.

5-4 CYLINDER HEADS A: Cylinder heads must be standard production. B. Single wire valve spring 100lb  seat pressure maximum with valve closed (no dual or bee hive type springs C: No porting, polishing, cutting, grinding or modifying of heads permitted. D: Area under valves must remain factory stock. E: Only two valves per cylinder allowed. F: No angle milling of heads allowed. G: Valves must be the same size and dimensions as stock and be made of steel. H: Head may be surfaced to insure a flat surface, but excessive cutting in order to decrease combustion chamber size is not allowed. Any surfacing over .050 will result in added weight of 1 pound per .001 cut.

5-5 CRANKSHAFT A: Only stock steel or cast production crankshaft permitted. B: Journal size on main and rods bearings must be stock. Maximum tolerance .040 inch.

5-6 PISTONS A: Only flat top and dish pistons permitted. After market pistons okay. No part of piston may extend above the block.

5-7 RODS A: Rods must be steel, all measurements must remain identical for make and model of the engine. This includes journal and wrist pin size. B: Rods must be solid with no holes. C: No billet rods allowed.

5-8 CAMSHAFT A: Only steel camshafts permitted. B: Maximum lift optional. Adjustable timing gears optional.

5-9 LIFTERS A: Stock solid or hydraulic steel lifters permitted. B: Lifter diameter and height must be standard for make of engine being used. C: No roller or mushroom type lifters allowed.

5-10 ROCKER ARMS A: Stock rocker arms only. No roller rockers allowed.

5-11 INTAKE MANIFOLD A: Only stock non-high performance intake allowed. B: No porting or polishing allowed on intake.

5-12 CARBURETOR A-1: The Holley 2300 HP two (2) barrel carburetor, part number 80787-1, with a venture size of 1-3/16 inches and maintaining a throttle bore maximum size of 1-1/2 inches is permitted. Carburetor must remain stock as provided by the manufacturer. Only Holley replacement parts can be used in any carburetor rework. A-2: Holley 2300 two (2) barrel carburetor, model 7448, will also be permitted. Carburetor must remain stock as provided by the manufacturer. Only Holley replacement parts can be used in any carburetor rework.

B: HOLLEY 2300 HP and 7448 BARREL CARB. REWORK GUIDELINES: B-1: Body of Carb: No grinding, polishing or drilling of holes permitted. B-2: Choke: If choke is present, the choke may be removed, but all screw holes must be permanently sealed. B-3: Choke Horn: Choke horn must not be removed. B-4: Carburetor Boosters :Booster must be safety wired.  The booster type must not be changed. The Holley booster part number 45R-107-1, with the casting number 45R-107 and part number 45R-312R, with the casting number 45R-312 are the only boosters that will be permitted. The Holley casting numbers must remain legible on the top of all booster stems. Size or shape must not be altered. Height and location of the boosters must remain as manufactured. All boosters must maintain a minimum outside diameter of 0.616 inch. B-5: Carburetor Venturi: The venturi area must not be altered or reshaped in any manner. The venturi must be completely round. The casting ring must not be removed. The location of the venturi must remain as produced by the manufacturer. B-6: Alterations that, in the judgment of Track Officials, were made to allow additional air to be picked up below the opening of the venturi such as altered gaskets, base plates, and drilling holes into the carburetor will not be permitted. B-7: Carburetor Throttle Body (base plate): The carburetor throttle body must be used as provided by the manufacturer. The positioning of the throttle bores in the carburetor throttle body must be the same as provided by the manufacturer. The throttle bores must be completely round. The throttle bores must be straight without taper from top to bottom. The throttle bores must remain perpendicular to the top and bottom of the carburetor throttle body. The throttle body (base plate) must not be altered in shape or size. All vacuum holes must be threaded and plugged. B-8: Throttle Plates (butterflies): Stock throttle plates must not be thinned or tapered. Idle holes may be drilled in butterflies. Screw ends may be cut even with the shafts, but the screw heads must remain standard. B-9: Throttle Shafts: Shafts must remain stock and must not be thinned or cut in any manner. No part of the shafts may be ground. B-10: Carburetor Metering Blocks: Only Holley metering blocks can be used. Surfacing of the metering blocks for improved gasket seal will not be permitted. The only metering blocks permitted for the Holey 2300 HP carburetor (80787-1) will be the Holley, part numbers 11938N, 11886 (390HP) and 12323 (screw in emulsion bleed jets) metering blocks. To order metering block part number 12323 (screw in emulsion bleed jets), the sales number is 134-276. For the Holley 2300 HP approved metering blocks, the amount of holes and passages and the location must remain as manufactured. Additional holes or passages will not be permitted in the Holley 2300 HP approved metering blocks. 1the Holley metering block, part number 12323 (screw in emulsion bleed jets) will not be allowed for the Holley 2300, list number 7448. All metering blocks must remain stock as provided by the manufacturer, and for that model carburetor. B-11: Accelerator Pump: The accelerator pump discharge nozzle must not be changed. The retaining screw must not be drilled for a discharge passage. B-12: Power Valves and Floats: Power valves and floats must be stock, unaltered Holley parts. B-13: All parts not covered in the preceding rework guidelines must remain stock.

5-13 CARBURETOR SPACER/ADAPTOR PLATE A: Spacer/adaptor plate may be maximum 1inch magnetic steel or aluminum. B: Spacer/adaptor plate must be bolted to the stock intake. C: Spacer/adaptor plate may be bored to width and length of the throttle bore. D: All blending must be in the 1inch spacer only. No blending can extend into the intake. E: No other portion of the runner may be ported or polished. F: Carburetor should mount on the intake per the original axis.

5-14 AIR CLEANER AND AIR FILTER A: The air filter element may not be sprayed or soaked with any type of chemicals or liquids. A: Only stock or approved round air cleaner allowed. B: No funneling of air to carburetor allowed. The top and bottom of the air filter housing must be solid and the same diameter. No lips or rounded edges are permitted. The air filter housing must be the same size as the air filter element. The air filter housing must be centered and level on the carburetor. The bottom of the air filter housing must be lower than the top of the carburetor choke horn. No tubes, tunnels or any device which may control the flow of air is permitted inside of the air cleaner or between carburetor.  C: No fresh air induction allowed. D: No velocity stacks allowed.

5-15 WATER PUMP A: Only stock water pumps allowed. B: Only standard production steel v-type or serpentine type belt and pulleys permitted.

5-16 FAN A: No flat or free wheeling fans allowed. B: Electric fans permitted.

5-19 ENGINE OILING SYSTEM A: The oil pans may be extended a maximum of 2 inches by cutting the bottom of a stock pan adding a two inch extension and welding the original sump back to the extension. B: Baffles and windage trays may be added as long as it is a permanent part of the oil pan. C: No crankshaft scrapers allowed. D: No accusump systems or external oil pumps allowed. E: No external oil coolers allowed.  F. No crankcase evacuation allowed.

5-20 EXHAUST SYSTEM A: Headers may be used. B: All exhaust pipes must be routed beneath the transmission and exit to the outside of the car behind the driver and in front of the rear wheels. C: No thermal wrap allowed on exhaust system.

6. ELECTRICAL

6-1 IGNITION A: Only stock type distributor permitted. B: Only stock type coils permitted. C: No high performance ignition systems allowed. Stock type ignition . (No ignition amplifiers allowed).

6-2 BATTERY A: One (1) standard automotive 12 volt battery, not to exceed 13.5 volts, will be permitted. B: The battery must be installed in an enclosed battery box, complete with a cover, located behind the front spindle in front of the firewall, or inside the interior of the car behind the driver’s seat.

6-3 ELECTRICAL SYSTEMS A: All electrical switches must be operable and must be located within reach of the driver, except the labeled on-off master switch which must be located on the front of the dash panel in the center. The on-off master switch must be wired to the battery cable in a manner that would cut off all electrical power to the car.

7. DRIVE TRAIN

7-1 CLUTCH A: Clutch assembly must remain stock. B: Hydraulic slave cylinders allowed.

7-2 FLYWHEEL A: Flywheel must be stock. B: Flywheel must be original in configuration in all respects for make and model of car. C: No aluminum flywheels allowed. D: Minimum flywheel and clutch assembly weight allowed is 28 lbs.

7-3 STARTER A: The self-starter must be in working order and in the stock location. Only standard factory OEM type starters will be permitted.

7-4 BELLHOUSING A: A 2 inch hole must be drilled in bottom rear for inspection.

7-5 TRANSMISSION A: Only standard production manual transmissions allowed. B: All forward and reverse gears must be in working order. C: No quick change transmissions allowed. D: No automatic transmissions allowed.

7-6 DRIVESHAFT A: Drive shaft and universals must be standard to production type. B: Drive shaft must be magnetic steel and painted white. C: Only one piece driveshafts allowed. D: It is mandatory that two 360 degree magnetic steel brackets, no less than 2 inches wide and 1/4 inch thick and be placed around the driveshaft and welded to the crossmember of the car, one in the front 1/3rd of the driveshaft and one in the rear 1/3rd.

7-7 REAR AXLE A: Rear end housings must remain stock. B: No quick change rear ends allowed. C: No cambered rear ends allowed. D: Rear ends may be interchanged between automobile manufacture.  E:  No adjustments on rear axle housing permitted.  (Adjustable Heim Joints)

8. FRAMES

8-1 GENERAL FRAME SPECIFICATIONS A: Factory production full frames or unibodies may be used. Unibodies may be used provided front and rear frame rails are tied together using 2 by 3 inch tubing minimum wall thickness .120 and extending a minimum of 10 inches into the existing rails and securely welded. B: Frames or unibodies cannot be interchanged between manufacturers. C: All frames or unibodies must retain original manufacturer’s components. D: No offset or tube frames allowed.

9. SUSPENSION

9-1 COIL SPRINGS A: Heavy duty springs may be used provided they are similar in design to the original equipment. B: No coil over suspension or coil over eliminators allowed. C: No weight jacks allowed. D: No hydraulic or mechanical weight shifting devices allowed.

9-2 SWAY BARS A: Stock sway bars only. After-market sway bars are not permitted. B: Sway bars must mount in tock location using stock components. Stock sway bar link assembly on one side. Other side may be adjustable.

9-3 SHOCK ABSORBERS A: Only standard shock absorbers with only one (1) shock absorber per wheel will be allowed. B: Heavy duty racing shock absorbers are not allowed. Inflatable shock absorbers are not allowed. Externally adjustable shock absorbers are not allowed. C: Cars with front struts must maintain front struts. D: Front and rear shocks and struts must mount in stock location using stock components only.  E:  A steel plate may be welded on the top side of the front strut tower for reinforcement only.

9-4 A-FRAMES/CONTROL ARMS A: All suspension parts must mount in stock location. B: Lower control arms must be stock for car but may use heavy duty ball joint. C: Lower control arm may be reinforced for safety. D: Both lower control arms must remain same length. E. Maximum camber 3.5 degrees. F: No adjustable panhard bars allowed.  G: No after-market panhard bars allowed. .H: No traction bars or additional linkages allowed.

9-5 SPINDLES, WHEEL BEARINGS AND HUBS A: Spindles must be forged steel. No fabricated spindles permitted. No modifications to spindles permitted. B: Cars with front struts must maintain front struts. C: All suspension parts must mount in stock location.

9-8 WHEELBASE A: Original wheelbase for make and model must be retained. B: Allowable wheelbase 90 to 103 inches. C: When measuring wheelbase one side, left or right, must be stock. D: Maximum allowable tolerance cannot exceed plus or minus 1/2 inch.

9-9 GROUND CLEARANCE A: Frame rails and all sheet metal clearance with driver in car is 5 inches. B: Ground clearance may not vary more than 2 inches left to right or front to rear. C: Front spoiler clearance 5 inches. D: Exhaust pipe clearance 3 inches. E: Minimum fuel cell height 9 inches.

10. STEERING

10-1: All cars will be equipped with a magnetic steel steering shaft. 10-2: Center top of steering post must be padded with at least 2 inches of resilient material. 10-3: A quick release metal coupling on steering wheel is mandatory. 10-4: The use of universal joints and collapsible steering section in steering shaft must be acceptable to NASCAR Officials. 10-5: No heims or rod ends allowed on steering components such as tie rods, center links, etc.

11. BRAKES

11-1 BRAKE COMPONENTS A: All components must be stock for the make and model of car being competed in. B: Front disc brakes allowed only on make and model of cars that they came on from the factory. C: No disc brakes allowed on rear of the car. D: No dual master cylinders allowed. E: No inside the car brake adjusters allowed. F: No lightening of any brake parts allowed.

12. WHEELS

12-1: Only 13 inch steel wheels allowed. Wheels may be reinforced. 12-2: Maximum wheel width is 8 inches 12-3: Minimum allowable backspacing is 3 inches. 12-4: All track tires and wheels must be the same size and offset. 12-5: No bleeders allowed.

13. TIRES

13-1: The only tires permitted are Hoosier Comanche’s.

14. FUEL SYSTEMS

14-1 FUEL CELL A: The use of a commercially manufactured fuel cell is mandatory B: The maximum fuel cell capacity, including the filler spout and overflow shall be 22 gallons. C: An 8 gallon fuel cell is recommended.

14-2 FUEL CELL CONTAINER A: The use of a fuel cell container is mandatory. B: Fuel cell must be encased in a container not less than 22 gauge steel. Fuel cells must be fitted in the container so that the maximum capacity including the filler spout does not exceed 22 gallons.

14-3 FUEL CELL AND CONTAINER INSTALLATION The fuel cell and the fuel cell container shall be installed in accordance with the following requirements: A: Fuel cell and fuel cell container must be attached to the floor or in a recessed well. B: Fuel cell must be installed as far forward as possible, but behind rear wheels, in the trunk compartment equal distance between frame rails. C: Fuel cell installed in a recessed well must be secured with steel tubing not less than 2 lengthwise and two crosswise evenly spaced across the top. Tubing must be made of 1 inch by 1 inch square steel tubing bolted flat to the floor pan with no spacers. A reinforcement support frame must be constructed using 1 inch by 1 inch by .065 inch square steel tube. The support frame must be constructed using 2 tubes that are welded to and extend from the left side to the right side frame rails. Three tubes must be equally spaced across the recessed well. These tubes must be welded to the cross support tubes and extend down the front sides, rear sides and under the fuel cell container and recessed well. D: When mounting the fuel cell through the trunk floor an additional container of 22 gauge steel must be welded solid to the trunk floor for instillation of fuel cell container. A1 inch square steel tubing reinforcement frame must be welded to the floor pan from frame rail to frame rail. The bottom of the fuel cell container must have a minimum ground clearance of 9 inches. E: A protective bar, minimum 1-1/2 inches in diameter and .083 inch wall thickness must enter below the rear frame section behind the fuel cell. This protective bar must be as wide as the frame rails and extended as low the bottom of the fuel cell with 2 vertical uprights evenly spaced between the frame rails and attached to the rear crossmember. Two support bars one located on each corner must angle upwards and be welded to the rear frame rails. F: Fire wall of steel not less than 22 gauge steel thickness must be located between trunk and driver.

14-4 FUEL PUMP A: Mechanical fuel must be used on engines where A fuel pump boss exists. B: Electric fuel pump may be used if no boss exists For a mechanical pump. Recommended oil pressure switch for fuel pump shut off.

15. SEATS AND SEATBELTS

15-1 SEATBELTS A: A quick release belt no less than 3 inches wide is mandatory. B: Both ends of lap belt must be fastened to the roll bar cage with high quality bolts not less than 3/8's inch in diameter. C: Shoulder harness must be no less than 3 inches wide and must come from behind the drivers seat. Where the harness crosses the rollcage, it must pass through a steel guide welded to the rollcage that will prevent the harness from sliding from side to side. D: A center (crotch) belt must be securely mounted to the lower seat frame at the bottom and to the lap seat belt on the top. E: Where the belts pass through the seat edges, it must have a grommet installed, be rolled, and/or padded to prevent cutting of the belt. F: All seat belts and shoulder harness must connect at the lap belt with a NASCAR approved quick release buckle. G: All  seat belts and harness must be 5 years or newer.

15-2 SEATS A: Bucket seat with headrest is mandatory. Seat must be factory manufactured. Seat must be aluminum a minimum if 1/8 inch thick. Lightening of the seat in any way will not be allowed. B: Seat must be properly installed and acceptable to NASCAR Officials. C: Adequate padding for the seat and headrest is mandatory.

16. ROLLBARS

16-1: Round magnetic steel tubing 1-3/4 X .090 inch seamless roll over bars are compulsory for the roll cage and must be acceptable to NASCAR Track Officials. Aluminum and/or other soft metals are not permitted. 16-2: Roll bar connections must be welded. 16-3: See diagram at the back of the NASCAR Weekly Racing Series rulebook or contact the Track for roll bar placement. 16-4: A magnetic steel plate, 1/8 inch thick must be installed over the left side door bars and welded or bolted in place using a minimum of four (4) ½ inch magnetic steel bolts. The plate must begin in line with the back edge of the driver’s seat, and extend forward a minimum of six (6) inches beyond the front edge of the driver’s seat not including any add-on leg supports. The plate must extend from the top left side door bar to the top of the left side frame rail. Plate may be installed in sections provided there are no remaining open spaces. 16-5: All roll bars within the driver’s reach must be covered with an impact absorbent material acceptable to Track Officials.

17. FIRE CONTROL

17-1: All cars must have an onboard fire extinguisher, dry powder or Halon. 17-2: Driver must be able to reach fire extinguisher or the control knob on Halon unit. 17-3: No extinguisher may be taped to the roll bars or brackets. 17-4: When the car is on the track, it is mandatory that the driver wear a fire resistant driving suit. 17-5: Fire resistant gloves are recommended.

Contact Robert Turner 336-585-1200 ext. 200