2022 Carolina Derby Promotions
Full Size Class Rules
(Old and New Iron)
Read and re-read ALL rules carefully, do not twist or bend these rules. If it doesn’t say you can do it, don’t assume that you can, ASK first or don’t do it! . All Judges' decisions will be final!! Use common sense!!! Contact Jason 704-477-0074 if you have any questions on any of these rules.
GENERAL:
• Any year American made sedan or station wagon is allowed EXCEPT: Imperials, Hearses, Limos, Checker Cabs, and Ambulances. No 4X4’s, AWD, SUV’s, vans, convertibles, T-Tops, El Caminos or any model with a truck bed. No Sedagons.
• No make swapping! GM body must be on GM frame. Ford to Ford, etc.
• Do not paint anywhere on suspension or frame. We will not even inspect your car.
• Cars must be stripped completely. Remove all decking in wagons. Vehicles must be clean of all debris. All glass removed.
• You must have a working seat belt. Lap or shoulder is fine.
• You may remove anything, NOTHING can be added!!
• Any tire may be used in this class!
• Any stock wheel can be used in this class, Weld in center allowed, beadlocks allowed. No (2) piece wheels!
• All cars must have working brakes.
BODY:
• You may remove body bushings and suck body tight to frame. 3/4inch body bolts max! Body bolts may not exceed through the frame, must be inside the frame only. Nut and plate on top. Maximum plate size is 4” x 4” x ¼” inch.
• You may weld the driver’s door all the way around, all other doors 6’’ on/6’’off. 3’’ x 1/4’’ strap max.
• Doors must be at least chained or wired.
• Body creasing will be allowed on the rear quarter panels and front fenders only other than this there will be Zero crease enhancement, Zero sheet metal forming, shaping or folding.
• You are allowed (4) 3/8” bolts per wheel well
• Rust repair is limited. Patched metal must be the same thickness as floor boards or body. Max 1inch overlap to good metal outside rust area. Do not abuse this rule or you will cut!
• No welding of interior body seams.
• You may run a driver's door plate. 12" wide and can overlap the driver's door seam 3". (1/4" thick max). Has to be stich welded every 4". (Can't Weld Solid)
FRAMES:
• ABSOLUTELY NO WELDING ON FRAMES ALLOWED except You may weld frame seams A arms forward single pass 3/8” max bead!!!
• Frames must appear completely stock in appearance. No frame shaping. All factory frame holes must remain open. Absolutely no metal may be added inside the frame.
• You may notch or dimple the frame in multiple locations per frame rail. Notch or dimple must be between back of rear humps and back bumper. NO EXCEPTIONS.
• IF SHORTENING THE FRONT FRAME SECTION, A MINIMUM OF 20” OF FRAME MUST REMAIN. MEASUREMENT TAKEN FROM FRONT OF FACTORY COIL POCKET LOCATION TO THE BACK OF THE BUMPER.
• Coil spring cars may have a 22”x6”x3/8” hump plate, Leaf springs cars get 12” x 6”x 3/8 hump plate. plate must be on the outside of frame facing the wheel and must be clear of any rear end bracing by 3”. Plate must be located between the 9 and 3 oclock on frame rail.
• 80’s - 02: You are allowed to cut tabs and tilt at the crush boxes or cold bend or cut and weld back with a single pass, must be in front of factory cross member. Max spacer at core support is 8”, no added metal. 03 and up NO TILTING!
• All cars must use the factory core support mounts. There is to be no welding of angle iron or pipe to the side of the frame to mount your core support. This mount is considered a body mount. Mount may be replaced with ¾ inch all thread that may run through the top side of hood.
• Core support and core support mount must be in factory location.
• Fresh or Pre Run Cars: You are allowed 4 plates total. 4” x 4” x ¼” thick plates only. No splitting up or dividing to double plate. These plates can be anywhere on frame but can't act as kicker or gusset and can't attach to the body. These plates must remain square they can not be stretched or manipulated to be longer.
• Pre Runs: You are not allowed any additional plates after your 4. You get your choice when to put them on. ( 4 plates total on car)
SUSPENSION/STEERING:
• No suspension modifications allowed. Must remain strictly stock. Suspension must travel. Only exceptions below.
• No aftermarket or gm lift spindles.
•You may weld A-arms down 1 strap per side of car(NOT PER SIDE OF A-ARM) 1/4" thick 2" x 4". If welding a-arms down the a-arm must appear stock. Do not deform or alter a-arm. ONLY THE STRAP IS ALLOWED.
• On the back you may use 1 chain on each side from the package trey straight down around the rear end. (No welding links to frame rails).
• You may run an aftermarket steering column. Steering box must be in factory location. No Hydraulic Steering.
• Aftermarket ball joints are permitted. Only welding permitted is to weld in ball joint sleeves, no added metal. Sleeves permitted but nothing homemade. No square tubing ball joint sleeves.
• Aftermarket tie rods permitted, no heim joints. Must have factory style set up with ball joints.
• Leaf cars may run leaf clamps (Max 6 per side)
• Leaf cars must run factory leaf springs. No adding leafs or homemade leaf packs.
• 2003 and up Fords: All 03 and newer cars must use a factory aluminum engine cradle and steering rack. THIS MEANS THE OEM RACK AND CRADLE, NO AFTERMARKET AND NO TRUCK SWAPS OR OTHER OEM SWAPS. OEM FOR 03 AND NEWER ONLY WILL BE ALLOWED. 03 and newer Fords will be allowed to use the old-style spindles and upper A
arms. NO ADDED METAL.
• Reinforced factory or aftermarket/homemade trailing arms (both upper and lower) are OK. Trailing arms may be lengthened or shortened to achieve correct pinion angle. Factory bolt hole sizes must be used in all control arms. 2” x 3” Max.
• 1998 and Newer Fords: Watts link kits are permitted. If using a watts link aftermarket or homemade it must bolt to the package tray utilizing only 1/2″ maximum bolts. You MAY NOT bolt through the package tray to the body. NO WELDING TO PACKAGE TRAY. Watts link uppers must be two separate pieces. Lowers may be a max of 2″ x 3″ 1/4″ square cut for desired pinion angle and mounted in one fashion. A bracket on the inside of the frame in factory location may be welded but lower 2”×3” must bolt to that bracket. LOWER CANNOT BE WELDED IN ANY FASHION. Upper watts link uppers cannot exceed 8”x8”, lower brackets can be a max of 3”x3” x 1/4” thick and 6 inches long.
DRIVETRAIN:
• Lower engine cradles will be allowed. Only lower engine cradles, no full cradles, no pulley protectors, no distributor protectors, no halos. Cradle can not in any way tie into or touch the frame or body.
• You may run any motor and transmission.
• Only lower motor mounts may be welded to cradle only. You may use two 3 / 4’’ thick 6 x 6 spacers to raise the engine for steering components clearance. You may extend off back of cradle but nothing excessive. Nothing can be welded to frame. For example(SBC in Cadillac or Ford).
• 2003 and up Fords: You may run a Smith Metal Works bolt in engine mounting system or equivalent. Bolt in only no welding.
• You may run aftermarket motor mounts but no engine cradles. Nothing may add strength to car!
• ABSOLUTELY ZERO PROTECTORS!! This includes skid plates, engine cradles, and transmission protectors.
• You may weld rear end gears only.
• No Steel or Ultra bell housings. No Steel tail housings..
• Any 5 or 8 lug rear end. Rear end may be braced but can not add ANY strength to the frame or body. INSPECTORS HAVE FINAL DECISION, YOU WILL CUT IF IT ADD STRENGTHS TO FRAME OR BODY.
• Floor shifters, headers, and gas pedals are allowed. None may strengthen the car.
• Slip drive shafts are allowed
• Pinion Brakes are allowed.
• You may have 2- 3/ 8’’ chains attached from engine to frame cradle. For safety only.
• A maximum of 2’’ x 2’’ square tubing may be used for cross member. This cannot strengthen the car in any way!
DRIVERS COMPARTMENT:
• 4 point cage is highly recommended! Maximum 60inch side bars, 4inch diameter max. Cage cannot extend farther than 6’’ behind the driver seat. Only (4) down bars are allowed. Down bars can attach only to floor sheet metal. Down bars must be completely vertical. Roll over bar is optional but recommended. Can only be welded to back seat bar or sidebars. Not to the floor! Roll over bars must be completely vertical. Cage has to be 4" off firewall and 6" off floor
• A windshield bar is mandatory! 2 windshield bars from roof to cowl area. Cannot be welded. Maximum size: 3’’ wide, 1 / 4’’ thick.
• You may weld the driver’s door all the way around, all other doors 6’’ on/6’’off. 3’’ x 1/4’’ strap max.
• Gas tank and battery must be moved and firmly secured. Aftermarket fuel cell or gas tank behind the seat, battery in the passenger floor board. Nothing may be mounted in such a way to strengthen the car. Boat tanks must be securely mounted and properly covered.
• You may have a 28" wide gas tank protector 3" x 3" max tubing. It may butt up to package trey but can not be bolted or welded to anything. You may have 1 diagonal bar on each side coming off halo or rear bar to gas tank protector but must be below the window opening.
BUMPERS:
• You may use any stock bumper off any car.
• HOMEMADE BUMPERS ARE PERMITTED BUT MUST MEET THE FOLLOWING SPECIFICATIONS. MUST NOT EXCEED 8″X 8″. IF IT HAS A POINT THE POINT MAY NOT EXTEND MORE THAN 4″ FROM FLAT FRONT OF BUMPER. POINT MUST TAPER OVER32″. Homemade Points that step out then taper over 32” will not be allowed. BUMPERS MAY NOT BE SLEEVED AROUND FRAME RAIL. BUMPERS MAY NOT BE BUILT BACKWARDS AROUND RAIL. BUMPERS MUST START AT FLUSH MOUNTING POINT AND BE BUILT FORWARD. NO AMISH POINTYS.
• You may collapse bumper shock’s and weld a single pass around the shock. Bumpers may be seam welded.
• Factory Bumpers may be loaded but everything must remain inside of the factory envelope.
• HARDNOSEING: You may hardnose the bumper. If you hardnose you may only square the end of the frame off. Nothing Excessive!!
• You may weld a bracket on the outside of the frame only. You may only weld 8 inches(single pass only) back from the end of the frame rail, not the length of the bracket or shock. Judges' decisions are final on this. Please call if something is in question.
• If not using factory bumper bracket you may use a 4″ x 8″ x 3/8″ thick plate on outside of frame to mount bumper.
• You may only use front bumper brackets to mount the front bumper. No rear brackets will be allowed for any style car.
• No shocks may be inside the frame UNLESS it came that way from the factory.
• Rear bumper brackets must remain stock and in stock location.
• Maximum bumper height is 21 inches to bottom of bumper. Minimum bumper height is 14 inches to bottom of bumper.
TRUNKS:
• Trunk lid must remain in stock location.
• You may pick between 3 options. 1. (6) 3inch length angle to angle with one 3/8inch max bolt per fastener. 2. Tuck trunk, (4) fasteners on top, (2) inside trunk, (fastener’s can only attach to body only). 3inch LENGTH MAX ANGLE TO ANGLE WITH ONE 3/8inch MAX BOLT PER FASTENER. 3. Weld 6 on 6 off, 3” x ¼” strap max. Pick one or the other, not all.
• If chaining, you're allowed 3/8inch chain in (6) spots.
• If wiring, you're allowed (4) loops in (6) spots.
• If chaining or wiring: 3/4inch washers may be welded to body for chain/wire to run through.
• Absolutely no wedging. You may V or dish trucnk but it must remain 8” off of floor pan and the quarter panel must remain upright.
• Wagons may have a max of (4) fasteners. Pick one from above. Fasteners can only go through the body. Nothing can attach to the bumper.
• If the trunk will not open, a 12 inch hole must appear for inspecting. You may use (4) 3/8inch bolts with 1 1/2inch washers to hold the inner and outer trunk lid together.
HOOD:
• Hood must remain in stock location.
• Hood must be open at time of inspection.
• A 12 inch hole must appear in the hood for fire suppression. (2) 6inch hole’s okay. You may use (4) 3/8inch bolts with 1 1/2inch washers to hold inner and outer hood liner together.
• If bolting, you're allowed (6) 3inch max length angle to angle with one 3/8’’ max bolt per fastener.
• If chaining, you're allowed 3/8inch chain in (6) spots.
• If wiring, you're allowed (4) loops in (6) spots.
• If chaining or wiring: 3/4inch washers may be welded to body for chain/wire to run through.
• You may replace 2 of the 6 points of hood attachments with ¾ inch max threaded rod. Rod may replace the body bolt and run through the top of core support and mount through hood. (max (4) 4’’x4’’ plates can be used).
RADIATORS:
• Radiators must be in stock location.
• You may protect the front of the radiator with condenser or 24” wide by 1/8” thick pleated steel or expanded metal.
• Radiator must hold water. No alcohol or antifreeze allowed.
• No foam filler will be allowed around the radiator.
• You may secure the radiator with two options: 1. Two ratchet style straps. 2. Two pieces 3/8inch max threaded rod behind radiator. This rod only may be sleeved.(Rubber hose). This rod only may run from top to bottom of core support. It may not go through the hood! Pick between 1 or 2 but not both. NO EXCEPTIONS!!
• Transmission coolers are allowed.