305 WINGED SPRINT CAR RULES/2013 SEASON
MUFFLERS ARE MANDATORY/RACEIVERS MANDATORY
Section 1: General:
Section 2: Safety:
2.1 RIS general safety rules apply.
2.2 All drivers new to competing in full size sprint cars will be
required to run an identifying bright orange stripe on the rear of
their car for their entire first season
3.1 Top wings meeting ASCS specifications are mandatory. No
hydraulic sliders or any cockpit adjustable wing mechanisms
allowed. Front wings are optional and must meet ASCS rules.
4.2 Maximum right rear wheel widths is 18-inches, maximum left rear wheel width is 15 inches.
4.3 Hoosier Racing Tires on all 4 corners.
4.4 Left front is the only tire you can run flat.
Section 6: Rear End:
6.1 Gear rule – All cars will run a final drive ratio of 6:86 or less.
If gear is found illegal or driver/owner refuses the inspection, the driver will be disqualified, will lose purse for the night, will lose points for entire season and will be suspended from participating in the running of the next 2 class events. Suspended driver cannot participate in any event for this class at riverside speedway during the suspension period including race specials that include this class.
Section 7: Fuel System:
7.1 Methanol or Ethanol only. No Nitro or additives allowed.
7.2 Fuel subject to be checked anytime by track officials. Fuel samples may be taken for analysis and winnings may be withheld until results are known. Penalty for fuel infractions will result in forfeiture of all points and winnings won during event detected.
7.3 Fuel cell must be securely mounted with bladder mandatory for all events.
7.4 Tanks used for qualifying heats must remain for all events.
7.5 ASCS legal Injectors or carburetor allowed
7.6 Cam drive fuel pump only
Section 8: General Engine Rules (In addition to engine specifications named herein, a RACESAVER legal sealed engine will be allowed.)
8.1 316 max cubic inch limit/ 3.48 stroke Chevy; 3.000 stroke Ford
8.2 No titanium or ceramics will be permitted.
Section 9: Water Pumps:
9.1 May be cast iron or aluminum, stock OEM style, must bolt in the stock location.
Section 10 Engine Block:
10.1 OEM production cast iron 305 Chevrolet or 302 Ford only (no aftermarket)
10.2 No repositioning, boring, or bushing of cam or lifter bores. . Rebushing/repair of up to 4 lifter bores allowed in the interest of saving the engine blocks and to keep costs down.
Section 11 Crankshaft:
11.1 OEM production crank or ANY brand (3.480 stroke Chevy or 3.000 stroke Ford) with stock weight. (Balancing only no “Knifing”)
Section 12: Connecting Rods:
12.1 OEM rods with stock length of 5.7” Chevy or 5.090 Ford
12.2 Any aftermarket “I” beam “stock replacement” style rod with a max length of 5.7”.Chevy or 5.090 Ford
12.3 No aluminum rods allowed.
12.4 No billet steel rods allowed.
Note: Minimum of a 1” round inspection hole in oil pan is strongly recommended for visual inspection of crank and rods; Location is recommended to be towards the front half of the engine, as high as possible. Otherwise, engine oil pan is subject to removal.
Section 13: Pistons:
13.1 Any flat top two or four valve relief allowed.
13.2 Max “0” deck height (Piston may not protrude above deck surface)
13.3 Any piston rings.
13.4 Valve Train Specs
13.5 Timing sets - Chain only. No belt or gear drives allowed.
13.6 Valve springs straight wound only max seat pressure 120 lbs. must have 5 full coils.
13.7 Any flat tappet lifter with max diameter of .842 for Chevy and .875 for Ford. NO roller or mushroom style lifters allowed.
13.8 Any 5/16 diameter pushrod.
13.9 Any steel 7 or 10 degree valve spring retainer allowed.
13.10 Stamped steel or roller rocker arms allowed. No shaft systems, rev kits, or valve stabilizers allowed. (Stud girdles allowed.)
Section 14: Oiling System:
14.1 Wet Sump Only (No Dry Sump allowed).
Section 15: Camshaft:
15.1 Flat Tappet only/No Rollers. No “hard face” cams.
15.2 Chevy must utilize stock firing order (18436572); Ford must utilize stock firing order (15426378) or (13726548)
Section 16: Valves:
16.1 2.02 intake/1.60 exhaust max head diameter allowed.
16.2 11/32 valve stem diameter only. NO titanium valves.
Section 17: Cylinder heads:
17.1 Cast Iron only, no modifications allowed to the port, bowl, or chamber area. Minimum chamber volume is 64cc Chevy; 58cc Ford. The only stock VORTEC head allowed is the 350 Vortec.
Any GM stock head with minimum 64cc chamber or stock Ford casting with minimum 58cc chamber is allowed. No grinding, polishing, welding, acid or caustic work, shot peening, glass beading, coating, or other process that will alter the machined surfaces or natural sand cast finish. Heads must be untouched. Comparisons will be made to known legal heads if questions arise. The only exception allowed to this rule will be when media blasting has been used for cleaning purposes only. This determination will be made by the tech inspector(s). Any questionable parts may be presented to track management for inspection prior to assembly to avoid possible issues later.
17.2 Approved cylinder head castings:
Section 18: Small Block Chevy and Ford:
18.1 RHS Pro Action p/n 12319. (200 runner, 2.02 / 1.60 valves, 64 cc chamber, straight plug)
18.2 RHS Pro Action p/n 12320. (200 runner, 2.02 / 1.60 valves, 64 cc chamber, angle plug). --Part number 223400000 or 223400000A stamped in the accessory bolt mounting flange on one end of the head, also has 200 in casting under valve cover.
18.3 Dart Iron Eagle p/n 10320010 or 10230010P. (200 runner, 2.02 / 1.60 valves, 64 cc chamber, straight plug) --Part number stamped in the accessory bolt mounting flange on one end of head, also has 200 in casting under valve cover.
18.4 Dart Iron Eagle p/n 10310010 or 10310010P. (200 runner, 2.02 / 1.60 valves, 64 cc chamber, angle plug). --Part number stamped in the accessory bolt mounting flange on one end of head, also has 200 in casting under valve cover.
18.5 World Products Motown p/n 011250. (200 runner, 2.02 / 1.60 valves, 64 cc chamber, straight plug). -- Part number in casting under valve cover.
18.6 World Products Motown p/n 011150. (200 runner, 2.02 / 1.60 valves, 64 cc chamber, angle plug). –Part number in casting under valve cover.
18.7 RHS Pro Action p/n 35304 or 2208000180. (180 runner, 2.02/1.60 valves, 58 cc chamber).
18.8 Dart Iron Eagle p/n 13300000. (185 runner, 2.02/1.60 valves, 58 cc chamber).
Section 19: Weight
19.1 Cars must weigh 1,500 pounds after race with the driver in the car and no fuel added.
19.2 No bolt-on weight allowed.
Section 20: Protest/Post-Race Inspection
20.1 $500 for the top half of engine. $700 for complete engine.
20.2 Track does NOT pay for labor or materials associated with teardown for inspections.
20.3 Protest must be submitted within 10 minutes of feature completion (drop of checkered flag) for that class and before the top 5 cars and drivers are released from the scale area. Car protested has right to counter protest. Only top 5 and on the lead lap may protest.
20.4 Can OR Can’t rule: Do not try to read between the lines in the rule book. Just because the book doesn’t say you can’t, don’t assume you can. Any modifications not specifically outlined here are at the Tech Departments discretion. All final decisions will be made by the tech Officials. Ask first before you assume something is legal. Any violation of these rules will result in disqualification of the car and points for that night.
Section 21: P&G/Teardown:
21.1 All participants are subject to a P&G test at anytime. If engine is found illegal or driver/owner refuses the inspection, the driver will be disqualified, will lose purse for the night, will lose points for entire season and will be suspended from participating in the running of the next 4 class events. Suspended driver cannot participate in any event for this class at riverside speedway during the suspension period including race specials that include this class. If a driver/owner refuses to the inspection before the car is allowed to compete again the car/engine will be inspected (inspection may include an engine teardown)
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