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Street-Stock Section
Section 1 Bodies S.1 Open to any make of North American built car from 1965 to present inclusive with a wheelbase of 110 as factory listed for that year, model, and those models listed below with a wheelbase under 110. Interchanging of engine to body will be allowed. Chrysler Models 76-81 Volare and Aspen Ford Models 75-81 Granada and Monarch 78-81 Zephyr and Fairmont 80-86 Thunderbird, Cougar and Lincoln GM Models 78-79 Buick Skylark 78-86 Buick Regal Coupe 84-86 Buick Century 86 Buick LeSabre, Riviera 78-86 Chev Monte Carlo 78-81 Chev Malibu and Nova 84-86 Chev Celebrity 78-86 Olds Cutlass Coupe 84-86 Olds Cierra 86 Olds Delta, 88 Tornado 78-86 Grand Prix 78-81 Lemans Coupe, Phoenix, Grand AM
S.2 Bodies must be of original manufacturers design and stock appearing with steel body panels only, minimum 20 gauge. S.3 Sports cars, station wagons, convertibles and trucks are not permitted. S.4 Bodies may be two or four door design with a minimum weight of 3500lbs, with driver in. S.5 Car must retain stock original passenger floor panels, trunk floor, and firewalls or repaired in original contour with same gauge metal. Any car not meeting these specifications in the opinion of Tech is subject to weight penalties as will be determined by Tech. S.6 Doors must be bolted or welded shut and may not be cut down with the exception of the right front door may be rolled down a maximum of 2. S.7 Original or equivalent bumpers must be used and be fastened to the frame in the original location. Bumpers may be reinforced but must retain stock appearance and bumper ends must be tied into the body to prevent hooking. 1/8 plate may be used to maximum width of bumper. S.8 All glass must be removed with the exception of the windshield, where 1/8 lexan may be used if securely fastened. S.9 All exterior chrome, trim, and vinyl tops must be removed. Windshield trim only may be retained if securely pop riveted in place. S.10 There must be a complete firewall of minimum 24 gauge between the driver and engine and the driver and the fuel cell. S.11 Rear spoilers allowed. Must be no larger then 4inches high, and 50 inches wide (measured on front). No side boxing spoiler. S.12 One rear view mirror permitted. It may be mounted in the center of the windshield or mounted on either windshield post. Mirror must be kept within body lines. S.13 All interior trim must be removed with the exception of the drivers seat, which must be bucket type. The seat must be securely bolted to the frame with a minimum of four bolts of minimum 3/8 diameter, grade 5 quality or better. Seat may be electrically welded instead of bolted, at four points with a minimum weld joint of 2 at each point. S.14 Sharp edges or projections which could cut tires, cause damage or injury are not permitted. S.15 Fuel Cell and fire suit mandatory. S.16 Dirt Bars or Rub Rails maximum 1 Ό outside measurement hugging body line may be used. Rails may be placed between wheel well openings and front and rear of openings to bumpers. Bar ends are to taper into the body to prevent catching onto or hooking another vehicle. Rebar rub rails not allowed.
Section 2 Chassis & Suspension S.21 Complete rear wheel drive frame only. No front wheel drive frames. S.22 Front and rear suspension must be stock and originally available on the car. Must be SQUARE. S.23 Springs or shocks may be replaced with any standard springs or shocks which will fit the stock mounting location. S.24 Air, coil-over and racing shocks are not permitted. S.25 Wheelbase must correspond to car model. S.26 No screw jacks or adjustable suspensions. S.27 Cars must have not more then 56% of the total weight located left of center with the driver in the drivers seat. Cars that have a full floor in stock location will be allowed to have a left side weight of 58%. Driver will be required to have percentage marked in lower right corner of the windshield. S.28 Aftermarket upper control arms allowed. MUST BE STEEL ONLY. Arms must be stock specifications. Home made control arms are not permitted. Any violation of this rule will result in a full suspension infraction. S.29 All cars must have full frame. Unitized bodies may be used provided the front and rear sub frames are joined with material equivalent in strength to the frame material. Variation to this rule may result in weight penalty as determined by the Technical Inspector.
Section 3 Engine S.30 Must be produced by the same manufacturer as the car and must not exceed 360cu. In. displacement. Engines must be stock, no performance engines. Early engines such as 275 hp 327 cu. in are not permitted. No solid lifter type engines such as 302 CHEV, 350 LT1, and 340 Mopars. Camshafts must be STOCK, low compression type available in 2 barrel engines: i.e., no 350 h.p. hydraulic Chev camshafts. No Cleveland engines. Maximum overbore .040 S.31 Cam Shafts: GM - Maximum lift .390 Intake - 410 Exhaust Maximum Duration 310 Intake 320 Exhaust CAM #3896930 Ford Cam Specs refer to Tech Dodge Cam Specs refer to Tech
TRW cams meeting the above specs are permitted. No blueprinted or reground cams permitted. Street Stocks to use Track camshafts and must be installed straight up. No degreeing or offset keys or bushings on camshaft or crankshaft. S.32 Any Cam shaft suspected to be illegal will be confiscated and replaced with a new Track approved Cam Shaft by Raceway Park. If the Cam is found to be illegal, the appropriate penalty will be given. Also, if anyone wishes to protest a Cam shaft, the questioned Cam shaft will be replaced at the Protestors expense. (See GP 11). S.32 Heads must be stock, low compression type and may not be interchanged. i.e. no 300hp heads on Chev engines, no 340 heads on 318 mopars, 351 heads on 302 fords, etc. GM heads permitted (last three casting numbers) 882, 128, 820, 493, 441, 991, 993, 339, and 188. Chrysler Engines 2531894, 3418915, 3671587, 3769974, 4027596, 4071051. S.33 Stock valves and springs. Heads must retain stock valve size for casting number on head. No 2.02 valve heads. Stock valve train only including rocker arms and ratios. S.34 Dished pistons only. No flat top pistons. Pistons must be cast. S.35 All engine components must be completely stock, no porting, polishing, machining or coating is permitted. No balancing. Cylinder heads may be planed a maximum of .030. S.36 Carburetor must be stock 2 barrel originally available on the car. Carb. May be altered only as follows: choke may be removed jets may be changed. A different carburetor for different engines may be requested by Tech. Maximum bore size is 1.385. S.37 Stock unaltered manifolds only GM log type. Only one exhaust pipe per manifold of maximum 2 outside diameter may be used, they must extend behind the drivers position under the car. S.38 Stock compression ratio no greater then 8.5 to 1 only to be checked by the whistler. Engine must be in stock location. Original mounts or same thickness. S.39 Engine must hold 20 of vacuum at 600 RPM on track gauge. Driver responsible for vacuum reading. If vacuum between 17 and 19 then you have one week to correct once during race season: second time points lost immediately. S.40 A $750 engine claimer is in effect in this class including water pump and distributor. The money must be paid to the Tech Man prior to the first race. Refusal results in car and driver to be disqualified for the season. The person claiming must compete in said class on that race event.
Section 4 Power Train S.41 Three speed automatic transmissions. No 2 speed automatic or standard transmissions. S.42 Transmissions must be stock and originally available on the car. S.43 Proper Torque Converter for engine. Must meet stock specifications. S.44 Quick change rear ends are not permitted. S.45 Aftermarket transmission coolers are permitted. S.46 Factory brake systems only.
Section 5 Wheels & Tires S.48 All wheels must not exceed 8 in width and 16 in diameter. S.49 8 wheels 3 backspace permitted. 7 wheels 2 ½ backspace permitted. S.50 All wheels must be steel. S.51 Tires must not exceed 235 X 16 Radials only.60, 65, 70, or 75 series, no LTs or performance rated tires. S.52 No soft compound tires permitted. No treating tires to soften compound. Durometer rule to be enforced (minimum reading of 55).
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