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Date Posted: 20:54:19 11/12/04 Fri
Author: Dan
Subject: NSCA BFGoodrich Drag Radial Eliminator rules

NSCA BFGoodrich Drag Radial Eliminator

CLASS DESCRIPTION
Drag Radial Eliminator is a heads up class designed for stock appearing American produced 1950 and later cars and trucks equipped with radial tires. Cars in this eliminator are allowed nitrous oxide, blowers, and turbos but only mini tubs and minimal suspension modification. Front wheel drive conversions are not allowed. For qualifying and race format of Drag Radial Eliminator refer to the General Rules section.

REQUIREMENTS AND SPECIFICATIONS

BALLAST

Removable ballast for the purpose of classification adjustments is limited to 100 pounds in an NHRA/IHRA-legal weight box. Maximum allowable removable/permanent is 500 lbs. Ballast must be bolted to frame or crossmember with a minimum of two ½ inch diameter bolts per 100 lbs. Water reservoirs for use with intercoolers/aftercoolers are not considered ballast and are permitted.

BODY

The body must retain its original appearance and profiles. Exact original OEM body shell type and dimension required. Aftermarket fiberglass replacement panels are limited to the hood, decklid, hoodscoop, and bumpers.

Aerodynamics - Any modifications designed for aerodynamic advantage are strictly prohibited. Removal of side mirrors is prohibited. Taping of any parts of body, seams, or front end is prohibited.

Bumpers - Complete stock-appearing bumpers are required.
Fender Splash Pans - Full-fender splash pans (aftermarket allowed) are required. Clearance for fenderwell headers is allowed. Removable fender splash pans are acceptable.

Firewall - Stock firewall required.

Floor/Trunk Pan - Pan modifications are allowed for clearance purposes (mufflers, fuel cell, and so on). No aluminum is permitted.

Grille - A full-production grille is required for the body style used. Covering in front of grille is prohibited.

Hood/Scoop - Hood and scoop may be fiberglass and may be hinged or lift-off. Scoops are limited to rear-opening configuration only with maximum height of 5 inches as measured from the flat of the hood to the highest point of the opening. The entire induction system must be covered by a legal hood/scoop. OEM-style forward facing hoodscoops are permitted. Any alterations to size or shape of original scoop must have prior approval from the tech department.

Interior - Dash, stock-appearing steering column, and seats must be in stock locations. Stock-type gas and brake pedals in stock location are required. Full upholstery, carpeting, and headliner are mandatory. Upholstered aftermarket bucket seats are allowed. A full stock dashboard with instruments (aftermarket instruments are allowed), controls and wiring must be retained. A heater is optional. The back seat may be deleted if it interferes with a rollcage; however, the exposed area must be carpeted or covered with upholstery.

Lettering/Decals - Car lettering and contingency badging is limited to windows only.

Wheeltubs - Full size wheeltubs not allowed. Stock wheel tubs may be sectioned and widened in order to clear legal rear tires.

Wheelwell Openings - The front wheelwell openings must be stock. The rear wheelwell openings may be enlarged to provide a maximum of 1.5 inches of clearance, as measured from the tire tread to the rocker panel in front and to the lower quarter-panel in back. Modified openings must be finished to factory appearance.

Windshield/Windows - Must be OEM safety glass. Windows must be operative but closed during racing.

Wings/Spoilers - No aftermarket wings and spoilers are permitted.

BRACKET RACING AIDS

Bracket racing aids such as optical sensors, delay boxes, stutter boxes, and throttle stops are not allowed. The application or use of any device, mechanical or electronic, that permits the driver to ascertain the position of their vehicle in relation to the starting line is prohibited.

BRAKES

The braking system may be upgraded. All cars must have front and rear hydraulic brakes. Automated brakes or any type of traction control is prohibited. Application and release of brakes must be a function of the driver's foot. Line loc permitted on front wheels only. Any other electric, pneumatic, or hydraulic device in the system is prohibited.

CHASSIS/SUSPENSION

Chassis - Complete stock frame and crossmembers must be retained over the entire length of the chassis with the following exceptions: (1) Front K member may be altered in an area from pan rail to pan rail of the engine block for oil-pan enlargement or removal; (2) Omission of the transmission support crossmember is allowed in lieu of motor and midplate engine/transmission mounting hardware; (3) Notching (removing a section of frame sufficient to clear wheelhousing) is allowed for the purpose of providing tire clearance. If stock frame is notched, then it must be reinforced in a manner acceptable to NHRA/IHRA. Tubular crossmembers are permitted.

Front Suspension - Stock front suspension is required. Aftermarket direct-replacement components are allowed.

Rear Suspension - Factory suspension arrangement and geometry for chassis mandatory. No alteration of factory four-bar pickup points. Rear suspension modifications are restricted to rear leaf or shock relocation and gusseting for strength. Direct replacement heavy-duty components allowed. Full size coils as produced at the factory mandatory. Bolt on traction aids and factory or aftermarket anti-roll bars acceptable. Wheelie bars are not permitted.

COOLING SYSTEM

Radiator - An OEM production-style or aftermarket fullsize radiator is required and must be mounted in stock location. Stock core support is required.

Water Pump - Electric water-pumps and drives are allowed.

DRIVETRAIN

Automatic Transmission - Automatic transmissions originally produced by any American automobile manufacturer are mandatory. Transmission-to-engine adapters are permitted. Aftermarket torque converter, trans-brake, shift kit, valvebody, pan cooler, and shifter use are permitted. Lock-up transmissions/torque converters are not permitted unless entry was originally equipped with such and must retain same style/type transmission. All shifts must be made manually without the aid of aftermarket electric or pneumatic devices.
Driveshaft - May be steel or aluminum. Carbon fiber driveshafts are not allowed.

Manual Transmission - After-market clutch assisted manual transmissions are allowed. Limited to 4 forward speeds. Clutch/automatics or planetary transmissions are not allowed. Split sliders are also not allowed. All shifts must be made manually without the aid of electric, hydraulic or pneumatic devices. Must add 150 pounds to minimum weight. Any manual transmission built by an automotive manufacturer, with stock case and gears will race at same weight as an automatic transmission entry.

Clutch - Clutch operation must be manually applied and disengaged with foot during run, without the assist of electric, hydraulic or pneumatic devices. Multi stage, variable release, or lock up type of any description is prohibited. Throwout bearing must release all fingers or levers simultaneously.

Rearend - Any rearend manufactured by Ford, GM, or Chrysler is allowed. Spools, aftermarket axles, and any gear ratio are allowed.

ELECTRICAL

The battery may be relocated. Electric fans are allowed. Charging system must be operative and alternator must be mounted in engine compartment.

ENGINE

Any American manufactured automobile engine is allowed. There are no restrictions on internal engine modifications except as outlined in this section. Crossbreeding of an engine to a different make of body is acceptable, provided the stock engine bay and firewall are retained.

Block- Any iron block utilizing factory available deck heights is legal. Aluminum blocks not allowed.

Engine Locations/Mounts - The block and heads must not touch the firewall. Firewall must be in stock location. Motor plates and solid engine mounts are allowed.

Heads - Production or aftermarket-approved heads are allowed (cast iron or aluminum).

Any inline head allowed. Raised ports are legal, but the intake port may not be spread wider than stock at minimum weight. Canted or otherwise altered small-block heads may run at 3250. All other aftermarket cylinder heads must be of conventional production design and must maintain original-production port layout and original-production valve angles (+ or - 2 degrees). Cylinder heads must be available to the general public and have a part number from the manufacturer. Heads may be fully ported, with no restriction on valve head/stem diameter.

Oiling System - Any oil pan is allowed. No dry-sumps allowed. Oil pump must remain in the stock location. Vacuum pumps are permitted.

Valvetrain - Any valvetrain may be used.

EXHAUST

All entries are allowed to use tubular headers. Adapter plates are permitted to bolt headers to cylinder head with a maximum thickness .375 inches. The headers must be connected to a working exhaust system with mufflers. Removal or modification of muffler internals is prohibited (no gutting). Exhaust pipe OD is unlimited, and the exhaust pipe must extend beyond the leading edge of the driver's seat with the exhaust directed to the side by means of a turndown. Mufflers also required on turbocharged entries but exhaust may exit behind front wheel.

FUEL/DELIVERY SYSTEM

Delivery System - Fuel cells, electric fuel pumps, pressure regulators, and any line size is permitted, but the fuel pump must shut off with a master electrical switch. A valve for removal of fuel during technical inspections is mandatory. Valve must be installed between carburetor and regulator, and should be installed in such a manner that allows a cup to be placed to catch fuel removed from the line. Exit of valve should be capped or plugged in addition to being closed for added safety.

Fuel - Only gasoline (as outlined in the General Rules) is allowed. The NSCA reserves the right to check gasoline at any time during competition. The addition of chemical additives intended to alter the makeup of the gasoline for increased performance is strictly prohibited. During fuel check, a competitor must identify the brand of gasoline being used. The sample will be considered illegal if it does not match the baseline results (ex. color, dielectric reading +or-.2, and chemical tests) logged by NSCA. Failure to pass fuel check is grounds for disallowance of the run during competition and disqualification from the event during eliminations.

IGNITION

Aftermarket ignitions, magnetos, multiple-step rev limiters, electronic-conversion kits, crank triggers, and external amplifier boxes are allowed.

INDUCTION

Carburetors - Carbureted applications are limited to a single four-barrel design.

Fuel Injection - Fuel injection must be electronic. The venturis (throttle bores) must be arranged in a conventional manner (grouped together as a carburetor). Throttle body must be within a diameter of 6.25 inches and venturis are restricted to a maximum total area of 11.00 square inches. Single-venturi throttle body is restricted to 3.74 inches (95.08 mm) in diameter.

Intake Manifold - Manifold must be a commercially available cast aluminum single 4 barrel design, with no welding or other external modifications that alter the size or shape of plenum, runners, or ports. Carburetor spacers are limited to a maximum thickness of 2 inches. Intake manifold adapters or spacers are permitted. NSCA reserves the right to add weight penalties to nonconforming manifolds.

Nitrous - Carbureted and fuel injected entries will be limited to a one stage nitrous system, either a plate or fogger nozzles. The system must be entirely contained in the intake manifold. A maximum of one fogger nozzle per intake runner is permitted. Nitrous plate must be mounted directly between the carburetor/throttle body and the intake manifold. Purge lines must direct plume out from under hood area.

Bottles - Entries limited to one 10 lb nitrous bottle. Must be securely mounted. If located in driver's compartment it must be equipped with the correct relief valve per manufacturer recommendations and vented outside the driver's compartment. The use of any agents other than nitrous oxide as a part of, or mixed with, this pressurized fuel system is strictly prohibited. (Push systems are prohibited.) Commercially available, thermostatically controlled, blanket type bottle heaters are acceptable. Any other method of heating bottles in vehicle is prohibited.

Electronics - No progressive systems, which control nitrous/fuel delivery, are allowed. Electronic or automated boost controllers of any type are prohibited on any forced induction vehicle. Manual (non-electronic, and non-automatic) wastegate controls are required for turbocharged combinations. Entire fixed system including control and tubing must be located in engine compartment and be self-contained.

Ram Air - Any aftermarket or fabricated ram-air unit is allowed, but it must not be visible from the exterior.

Supercharger - A single centrifugal supercharged engine when used in conjunction with a carburetor may be any cubic inch. Engines utilizing superchargers used in conjunction with fuel injection may be no larger than 360 cubic inch. Supercharger is limited to an inlet size that will fit into a 5.5-inch inside diameter hose. Injection of any liquid, gas or any other substance in the inlet or exhaust housing prohibited.

Turbocharger - Turbocharger is limited to a 101mm-inducer wheel diameter when used in conjunction with a carburetor. Carbureted turbo entries are allowed to be any cubic inch (so long as it fits into legal block/deck combo). Fuel injection is legal in conjunction with a turbocharger, but maximum inlet inducer inside diameter limited to 88MM. Fuel injected/turbo engines limited to 360 ci. Injection of any liquid, gas or any other substance in the inlet or exhaust housing prohibited.

Aftercoolers/Intercoolers - Aftercoolers/Intercoolers are permitted. Air to air coolers or water coolers are the only systems acceptable. Water and ice are the only two acceptable components allowed in reservoir.

ONBOARD DIAGNOSTICS/DATA RECORDERS

Onboard diagnostics and data recorders, which are used to monitor and record parameters such as a driveshaft speed, acceleration, nitrous timing, chassis strain, suspension travel etc., are not allowed. "Playback" tachometers are allowed. Dual Channel tachometers and the use of their features are acceptable.

STEERING

Aftermarket rack-and-pinion steering is allowed.
STREET EQUIPMENT

The following operational street equipment is required: Head lights, tail lights, brake lights, turn signals, and horn.

TIRES

Front and rear tires must be radial designed and DOT approved. Any brand/type front tire permitted, 4.5" tread width minimum. Rear tires are limited to tires with a maximum 325mm sidewall designation. The tread of the tires is not allowed to protrude outside the exterior bodyline at top of tires.

WEIGHT BREAKS

Weight breaks will be constantly evaluated to ensure parity with all combinations. Vehicle will never race under the minimum weight regardless of weight breaks.

Base Weight

3,000 lbs – Carbureted/Fuel Injected Nitrous Small Block Entries, any inline head.

3,250 lbs – Fuel injected Turbo/Supercharged Small Block Entries, non-inline valve small block entries.

3,300 lbs. – Big Block entries using OEM type heads, smaller than 525 ci.

3,550 lbs. -- Big Block entries using OEM type heads larger than 525, max ci 640.

OEM Heads- -100 lbs.

WHEELBASE/WHEELS

Wheelbase - Must retain stock wheelbase with a maximum variation from left to right and front to back of 1 inch.

Wheels - Aftermarket wheels are permitted. A minimum width of 3.5 inches is required on the front rims.

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