Late Models 2025 Rules
- ABC-approved 5 Star or AR template bodies: Chevrolet Impala SS, Chevrolet Monte Carlo, Dodge Charger, Dodge Intrepid, Ford Fusion, Ford Taurus, Toyota Camry, Pontiac Grand Prix.
(Bodies must conform to all guidelines and measurements for ABC-approved template bodies.) - AR Muscle Car bodies only: Camaro, Mustang, Challenger.
- New Gen-6 bodies are now legal—either a complete body from 5 Star or a re-skin kit from AR Bodies.
- Home-built aluminum bodies (any mentioned) are permitted using approved ABC or AR Muscle Car full unaltered top with front and rear unaltered bumper covers. Grill opening must conform to factory size.
(Bodies must conform to all guidelines and measurements for approved template or Muscle Car bodies. No flat-sided or wedge bodies.) - For all cars: Grill openings can only be taped up or shut for qualifying. No tape is permitted to cover or downsize the factory grill opening during dash, heats, or feature races.
- All cars will have a base weight of 2750 lbs, with a left-side weight maximum of 58%.
- All cars must utilize a working locked rear end (e.g., a spool or similar). No part of the spool can move or twist. Add 50 lbs for an open rear end.
- Track width: 79½” measured outside of tire to outside of tire on the bulge of the tire, sitting at static height at spindle height.
- Specific springs/shocks (S/B): No bump stops, conventional setup, 3″ ride height—deduct 75 lbs.
- Minimum weight for open engine car with locked rear end: 2675 lbs. Add 50 lbs for open rear end.
- Crate cars (only): Sealed crate engine with correct 6300 RPM chip (Ford) or 6400 RPM chip (Chevrolet) (Buss box tested)—deduct 50 lbs (2700 lbs). Crate cars can also deduct an additional 75 lbs for S/B-specific shocks/springs without bump stops, conventional setup, 3″ ride height. Minimum weight: 2625 lbs. Add 50 lbs for open rear end (2675 lbs).
- All cars must meet minimum weights before qualifying and after the feature. No deductions given for fuel burn-off unless the feature is more than 40 laps, then deduct 1 lb per lap over 40.
(You can weigh more but no less than listed minimums.)
B. Windshields must be a minimum thickness of 1/8-inch polycarbonate. Side windows and back glass must be a minimum 0.090-inch thickness of polycarbonate and be see-through. The maximum dimension for the vent window along the top of the door will be 12 inches and must be 90 degrees from the top of the door up to the A-post.
C. Spoiler height: maximum 6½ inches. Spoiler width: maximum 60 inches and must be see-through.
D. Body must not hang below the chassis.
E. Exhaust systems must be safe and meet approval. If exhaust exits through the door, insulation must include an exhaust flange that is mounted flush to the door. Pipe must not protrude through the door.
F. Radiators must be mounted in front of the engine and have an overflow tank of less than 2 quarts capacity or have the overflow hose directed up into the windshield. Radiator mounting must not alter sheet metal. No glycol-based antifreeze coolant permitted.
G. The air box between the nose and radiator may have no pieces wider than the radiator. No types of under-body air deflectors are permitted. All air for blowers or coolers in the engine compartment must be pulled from the nose or radiator air box. Air may not be blown or forced on the tire or bead. Air may only be directed to the brake rotors.
H. All cars must have a complete firewall front and rear. The front firewall, extending from the left-side frame rail to the middle of the interior floorboard, is required. It must extend under the driver, including the foot pedal area, and the rear firewall directly behind the driver must be at least 20-gauge steel. The remaining interior may be aluminum (0.025″ minimum). Interior sheet metal beside the driver must be run from no higher than the seat cushion at an angle to the bottom of the window opening. A racing seat is mandatory, bolted/welded to the chassis.
I. No cockpit adjustments other than brake bias. MSD boxes will be mounted to the right of the driver and out of his/her reach. No traction control devices, electronic or otherwise, permitted. Use of traction control devices will be cause for immediate disqualification, suspension from 3 future racing events (rainouts do not count), and loss of all previous points. Radios permitted for the Ohio 300 Series races only. Mirrors not permitted. Raceceiver (one channel only) is mandatory and must be used anytime on the track. Radios permitted. No cell phones, watches, or electronic devices permitted in the car or on the person.
J. Painting must be presentable. Numbers must be at least 18″ tall on both doors and 4″ in the upper right-hand corner of the windshield. Any track sponsor or class sponsor decals must be displayed either on top of the windshield or in a secondary spot, mid-height on the right (passenger) front fender and door area. Failure to have decals in place will result in a 40% reduction in pay for any finishing spot. If any contingency money is being paid, the decal must be on the car, prominently displayed, to receive any funds. So, please ask questions first.
Chassis
Roll Cage
A full roll cage is required with 4 uprights at least 1.625″ O.D. with 0.095″ thickness welded to main frame rails. The top of the cage should form a box and follow the contour of the windshield in front and rear. Three door bars are required on the driver’s side and two on the passenger side. Door bars must run between front and rear roll cage posts and may not be inside frame rails. Gussets should be used where possible. Bars around the driver must be padded; SFI Spec. 45.1 is required. Cages must be approved.
Engines
Any displacement factory-produced engine with a cast iron block and cast iron or aluminum heads permitted. Engine, chassis, and body manufacturer need not match. All engines can be mounted a maximum 4′ setback for all bodies. The centerline of the crankshaft must be a minimum of 10½” to the ground. Plane carburetion limited to U.S.-manufactured 4-barrel. Any stock or aftermarket replacement for stock distributor may be used. Multiple coil-type systems are not permitted. The ignition switch should have “on-off” positions marked and within reach of the driver. Dry sumps permitted. All sealed crate engines must run the proper RPM chip per engine (see weight rules) and a 650 CFM Holley carb. All cars must have a working starter and battery. All batteries must be securely mounted.
Transmissions
Transmissions must have a minimum of two forward and reverse gears. All cars with a manual transmission must have a working spring-actuated clutch. No hand clutches. Drive shafts must have at least one 360-degree safety strap/loop directly behind the front universal joint.
Fuel Lines
Fuel lines must be securely mounted and protected. Fuel lines running through the driver’s compartment must be “Aeroquip” steel-braided or equivalent. No electric fuel pumps permitted. No nitro or straight alcohol. A maximum 22-gallon SFI-approved commercial-type fuel cell bladder with foam insert is required. The cell must be mounted in the trunk area between frame rails, with the bottom of the cell no lower than the bottom of the rear end center section. Cells must be secured by a framework using a minimum of 1″ square tubing. Rear protective bars are strongly suggested.
Suspension/Front
Rack and pinion permitted. Made-for-racing upper and lower A-frames permitted. Made-for-racing steel spindles permitted (unless using the approved Coleman spindle). No tie-downs or suspension-limiting devices of any kind. Sway bar: OEM style or splined-end style. Track officials’ ruling is final.
Suspension/Rear
A standard traditional track-approved straight bar 3-link system must be bolted/welded to the housing. All mounts for trailing arms, third link, and track bars must also be solid and may not have the ability to move. Trailing arms must mount to the rear end 3″ below the centerline of the rear axle. (Any variations in mounting or shape of the trailing arm will carry a 25-lb penalty per side—50 lbs total.) They must be mounted in a solid manner (Heim permitted), and no part of the trailing arm mounting may freely rotate around the rear end with one Heim at each end. No 5th coil or lift bar suspensions permitted. No birdcage setups of any type (3- or 4-link). The wheelbase difference from left to right may not exceed ½ inch.
Rear Ends
Floater rear ends required. Quick-change rear ends permitted. Cars must utilize a working locked rear end (e.g., a spool or similar). No part of the spool may move or twist. Add 50 lbs for an open rear end.
Springs/Shocks
KilKare-specific spring/shock package for 75-lb weight break:
- Shocks: Pro or AFCO R-13-T aluminum threaded body, twin tube, non-adjustable. No Schrader valves, no valve stems of any type. Split valving permitted. No bump stops—external or internal.
- Springs—Front: 325 lbs minimum. 2¼” coil-over style or single spring style, 5-inch diameter. Must be steel. 1 spring per wheel. No stacked springs. No progressive-rate springs. 1 spring rubber per spring. No pre-loaders.
- Springs—Rear: 325 lbs maximum. 2¼” coil-over style or single spring style, 5-inch diameter. Must be steel. 1 spring per wheel. No stacked springs. No progressive-rate springs. 1 spring rubber per spring. No pre-loaders.
- No travel-limiting devices.
Non-Specific Springs/Shocks
One shock per wheel, one spring per wheel. 2½” or 5″ diameter springs. No canister shocks. No air shocks or air springs. All must be mechanical in nature, and no part of shocks or suspension may utilize electricity. Bump stop and bump spring technology permitted.
Brakes
Vehicles must be equipped with four-wheel hydraulic brakes in good working order. No carbon fiber rotors. Only steel rotors permitted. No titanium parts or brake fluid circulators permitted. Liquid or gas cooling not permitted.
Hubs
Front and rear hubs may be replaced with heavy-duty aftermarket hubs. Wheel lugs must be a minimum of 5/8″.
Wheels
Safety
- On-board fire suppression system, full containment seat, HANS head and neck restraint or equivalent.
- Fire extinguisher, fire-retardant racing suit, racing gloves, racing shoes, up-to-date helmet (Snell 2015 or newer), 5-point minimum racing belt harness under 3 years old, window net required (no mesh window nets).
- Altering of a manufacturing part number will not be permitted. Any part found with an altered part number(s) will be disallowed in competition. No grinding off part numbers or painting springs or shocks. All must maintain original paint and color by the manufacturer. No covers over shocks. The track inspection equipment used by an official will be the standard of the race track, and all tests will be final.
- Please see general track rules and tire rules. KilKare Speedway in no way guarantees or implies these rules will keep you safe.
- These rules are subject to change as conditions warrant with a minimum of a 1-week notice to benefit this division. All general guidelines for participants—including guidelines disclaimer, safety, racing rules conduct, substance abuse policy, official decisions, etc.—are listed in the 2025 KilKare Speedway Official Rules.
- All rules are subject to interpretation of KilKare Speedway officials. All rulings are final.