USC general track rules supersede car division rules. 2010 division rules supersede all previous editions of the rules for HOBBY STOCK and STREET STOCK. Minimum age to compete in Hobby Stock is 14 years old. DEFINITION The word “stock” will mean unaltered and as originally produced for that year, make and model, including after-market replacement parts. BODY STYLE The car body must be USA manufacturer, front-engine passenger.  Plastic nose and tailpieces are allowed.  Fiberglass body panels are not allowed. Aluminum hoods and deck lids are allowed but must be OEM parts. No after market aluminum body panels allowed.   Cars must have full stock bodies, including the hood, fenders, deck lid, and bumpers.  Body must remain in a stock position on the frame.  The tech committee MUST approve any cutting on the car body. CHASSIS The chassis must be one hundred (100) inch wheelbase, or more. It must remain the same type as the body being used (for example: Camaro for Camaro, etc). BRAKES Brakes on all 4 wheels must work. No brake shut-off devices of any sort are permitted. Adjustable bias control valves are not permitted. After market pedals and master cylinders are permitted, with absolutely no adjustable brake bias. WEIGHT All cars must weigh 3150 pounds after the main event with the driver.  All cars will be weighed first time on the track and randomly during the season. BALLAST The recommended ballast to be used is extra roll cage bars or other types of reinforcement. Any removable ballast mounting is subject to the Tech Committee’s approval.  A ballast weight attached to the car must be painted white and the car number painted on it.  A twenty-five ($25) dollar fine will be assessed to the driver if the ballast is lost on the racetrack. WHEEL WELLS Fenders may be reasonably trimmed for tire clearance only.  The front and rear inner wells may be removed but rear wells are recommended. TRUNK AND HOOD Trunk and hood MUST BE SECURELY fastened. Must have quick release hood pins. No bolts and nuts. Holes may be cut in hood for air cleaner. DOORS Doors must be welded or bolted shut. FLOORBOARD AND FIREWALL The stock floor pan must remain intact for driver and front passenger compartments. The rear floor pan and firewall must be replaced with sheet metal if it is open or has been removed.  The front firewall must remain stock. BUMPERS A stock bumper with stock mounts where possible. Tubular bumpers will be allowed front and back, but must be covered with nose or tail piece. All others are subject to approval by the Tech Committee.  Bumpers may be reinforced with one piece of pipe size one and five-eights (1 5/8”) inches maximum OD.  All pipes must be rounded on the edges. Reinforcements must be concealed.  Bumpers must be strapped to fenders. Front and rear tow loops are required and must be sufficient to lift car and allow easy hook up to tow truck. No exposed nerf bars allowed.  Rub rails will be allowed flush with body. (Max 1” for width by 2” for height). WHEELS Steel spoke wheels are allowed. No aluminum wheels.  Wheel offsets are optional. The maximum rim width is eight (8) inches. 1” lug nuts mandatory. No bead locks allowed. TIRES Tires must be manufactured for use on passenger cars. The maximum width is eleven (11”) inches sidewall to sidewall.  No tolerance.  Any brand G60 tires with “IMCA” certification embedded into the sidewalls are allowed.  No wheel weights are allowed. Tire grooving is permitted but only to deepen existing grooves.  FRONT SUSPENSION The front suspension MUST BE THE ORIGINAL TYPE with modifications for safety. Tubular non-adjustable upper control arms are permitted. They must retain the stock mounting location. Lower control arms must remain stock, in the stock location. QUICK STEERS ARE NOT PERMITTED. All modifications made for safety are subject to approval by tech committee. REAR SUSPENSION Stock mounting only.  Ford nine inch (9”) rear-ends are optional.  Lowering blocks or spacers are optional. Locked or posi-traction rear ends are permitted. Trailing arms must be stock, equal length, non adjustable, and mounted in stock location. SHOCKS/SPRINGS Racing springs and shocks are allowed in stock mounting position only.  No coil-over units allowed.  Second right front shock is optional. ENGINE OEM Head and block must be cast iron, wet sump, no roller cams, no mushroom tappet cams, and no roller rockers.  Hydraulic flat tappet cams only, no mags, no external after market ignition boxes, no porting polishing, or port matching of intake or exhaust manifolds or heads. Cylinder heads must be stock, cast iron, and factory installed on the same make of vehicle. Vortec cylinder heads are not permitted.  Flattop or dish top pistons only, cast iron, two (2) barrel intake manifold required. Cast iron exhaust manifolds, shorty, and long tube headers are permitted. With the use of headers, 2½” or smaller (inside diameter) exhaust pipe must be used from the collector back, and pipe must extend past the back of the drivers seat.  With the use of cast iron exhaust manifolds, 3” or smaller (inside diameter) exhaust pipe is permitted and must extend past the back of the drivers seat (system must be securely attached).  Standard transmissions must have a steel flywheel, pressure plate and 10 ½” clutch minimum.  Automatic transmissions must have a complete, fully functional torque converter. Engine block, crankshaft and connecting rods all must match (example: 350 crank with 350 block and 350 rods). Chevy 305 and 350 must use 5.7” connecting rod, and Chevy 400 must use 5.565” connecting rod.  Stock harmonic balancers only. ENGINE SET BACK The centerline of the leading spark plug hole must be even with, or in front of, the centerline of the upper ball joint. CARBURETOR Must be Holley 4412 or stock 2bbl. (500 CFM maximum) or smaller untouched inside the venturies.  No ram air systems. One-inch carburetor adapter is permitted.  Choke air horn must be on carburetor. ROLLCAGE All cars must have a roll cage of minimum 1 ½” schedule .095 steel tubing. Roll cage must have four vertical uprights, (must have: “halo” roof support system made of roll cage material, Minimum .095, two rear angle supports, front nose loop and tail section loop, a minimum of three horizontal door bars on the driver’s and passenger’s side. Drivers door must have a minimum of 16 gauge plate located between the door skin and the outside of the  door bars.  All stress points must have gussets. The windshield must have center vertical bar of minimum of 1”OD pipe, a minimum of three windshield bars or heavy gauge metal screen covering the windshield opening in front of the driver. Dash bar is required. Uni-body cars, which have no frame to which attach the roll cage, must have minimum 6” X 6” steel plates welded to the floorboard. Uni-body cars may connect the front and rear sub frames with boxed tubing. SEATS AND SAFETY EQUIPMENT Seats must be mounted to the roll cage . NOT TO THE FLOORBOARD! Seat must be braced on the bottom, lower back and upper back. An approved padded headrest is MANDATORY! It MUST be attached to the seat or roll cage. A 5-point safety harness system (lap belt, shoulder harness, anti-sub belt, must be SFI approved) with quick release latch required. Belts must be securely mounted to the roll cage only. NOT TO THE FLOORBOARD! Follow diagram for proper installation of safety belts. Each driver must have a full racing fire suit, a helmet with face shield; Snell/DOT approved and a neck support brace Flameproof gloves are mandatory.  Flame retardant foot protection is mandatory (SFI Approved racing shoes or leather boots/shoes). Drivers must have a window net or use arm restraints. No fiberglass or plastic seats. DRIVER’S COMPARTMENT A 2-½ pound ABC fire extinguisher must be securely mounted with a safety latch within the driver’s reach. All fire extinguishers must be fully charged and equipped with a working gauge. All cars must have a firewall between the driver and the engine, and a firewall between the driver and the fuel cell. Drivers must be completely separated from the track. Fuel lines that run through the driver’s compartment must be enclosed from firewall to firewall by electrical conduit and securely fastened. BATTERY The battery must be securely fastened inside a metal frame. If the battery is in the driver’s compartment it also must be inside a well secured covered box. All batteries must be completely isolated from the driver. FUEL CELL Fuel cells are mandatory for all cars/classes except for Thunder bombers and Hornets. The fuel cell should be mounted within the main confines of the chassis and roll cage. All fuel cells must be encased in a steel container.  All fuel cells must have flapper valve.  TRANSMISSIONS All standard transmissions must have blow proof bell housing or a protective scatter shield. Scatter shield must be a minimum of ¼” thick. DRIVESHAFT All cars must have a safety loop around the drive shaft securely mounted within 6” of the front U-joint. The drive shaft must be painted white. MIRRORS Rear view mirrors are not allowed in any car class. IDENTIFICATION Numbers must be at least 18” high and 2” wide on both sides of the car. The top number must be at least 20” high and 3” wide. UCS Officials have the right to temporarily change car numbers to avoid duplication. Car numbers may be registered for a $5.00 fee. BRAKES Four (4) wheel hydraulic brakes in good operating condition are REQUIRED. No shut-off valve on ANY brake line is allowed. No brake bias valves allowed. Any car with non-working right brake is subject to not being allowed to compete. In the event, after a race, the car is inspected by the tech committee and is found to have a non-working right front brake, that night’s purse and points will be forfeited. REMOVEABLE ITEMS All glass, plastic, upholstery, rear seat, lights, mirrors, and chrome must be removed. BODIES All damages incurred during a race must be reasonably repaired by the next event. This applies to all classes. Hood and deck lid must be on the car if it is on the racing surface. All bumpers must be in place and securely fastened to be on the racing surface. If the hood of a car flies up while it is on the racing surface, and the driver is able to maintain vision and control of the car, the car will be permitted to finish the race. FUEL TYPE Pump fuel or racing gasoline ONLY. No methanol or alcohol. RADIATOR Any type of radiator may be used. The radiator must be mounted in from of the engine. Cooling system is allowed if shielded from the driver. OTHER Operational self-starters are required. Cars MUST start under their own power. A master kill switch is mandatory and must be mounted on the left side of the car and marked by a 3” arrow and must be accessible from the outside by pit personnel. No two-way communication devices allowed in racecar.