Pro drag radial class ADRL

I'm excited about it. That's all.

Fun to watch,and i'm sure pretty fun to drive.

Rick you should put some radials on your car ,then you could drive it to the car shows.That'd make it fun to drive too

I asume we'll here the same names winning over there as we do to the ones running at the top of the 275 and OL 275 field. Those cars are fairly easy to meet multiple rule configs...

great rules ....

DESIGNATION: Pro Drag Radial or PDR followed by car number. Numbers must be at least 4” tall and on both side windows, upper left of rear window and upper right of windshield.

FIELD: 16 car qualified field.

Minimum weight at conclusion of run, including driver 3,250 lbs.

Naturally Aspirated Small Block, deduct 850 lbs.

Naturally Aspirated Big Block, deduct 600 lbs.

Small Block with Nitrous Oxide, deduct 750 lbs.

Big Block with Nitrous Oxide, deduct 500 lbs.

Small Block with Supercharger or Turbocharger, deduct 550 lbs.

4 Cylinder and 6 Cylinder Engines, deduct 750 lbs.

Non 4-Link Chassis, deduct 100 lbs.

All rules subject to change at the sole discretion of the ADRL Technical Services Department.

REQUIREMENTS AND SPECIFICATIONS

BODY

BODY: The car must retain its original appearance, profiles and dimensions. Factory roof and quarter panels must be used. Aftermarket fiberglass replacement panels are limited to hood, front end, doors, deck lid and bumpers only. All front ends must be of factory dimensions and cannot be stretched. Aftermarket wings and spoilers are permitted. Complete stock appearing front and rear bumpers required. No Pro mod, panel bodies or full chassis cars. Maximum front end overhang of 45” as measured from centerline of front spindles. An ADRL accepted extension may be used to reach 45” if the front end overhang of the body is less than 45”. All vehicles must be professionally finished, painted, lettered, numbered and decaled.

FIREWALL: Firewall must be within 2 inches of stock location. Firewall will be measured from the centerline of front spindle to the farthest point on firewall. Engine must remain in front of firewall.

FLOORS: Replacing stock floors with .024″ steel or .032″ aluminum allowed. Driver’s side floor pan must be .024” steel and must be welded in place extending from firewall to back of driver’s seat. Carbon fiber or composite materials may not be utilized in any portion of the flooring in the driver’s compartment except for any panel located behind the driver including suspension covers and wheel tubs.

HOOD SCOOP: Allowed. Must be finished and painted to follow the bodies paint scheme

STREET EQUIPMENT: Functional headlights, taillights and brake lights required.

WINDOWS AND WINDSHIELD: Required. May be replaced 1/8” inch think lexan, plexiglass or other shatterproof material.

INTERIOR: Factory appearing dash and door panels required.

CHASSIS

BATTERY: Maximum of two batteries allowed. All batteries must be securely fastened. An external master electrical shut off clearly labeled “PUSH OFF” is required.

BRAKES: Four wheel brakes with dual master cylinder mounted above frame rails required.

CHASSIS: SFI 25.1 E or 25.2 certification required. Full tube chassis strictly prohibited. Entries must retain front factory frame rails. Front frame rails may be notched or modified.

DRIVER LOCATION: Must be in stock location, on left side of vehicle.

GROUND CLEARANCE: Minimum of 3” required from whatever portion of the vehicles body or frame rail that breaks staging beam to 12” behind front axle centerline.

STEERING: If removable steering wheel is used, SFI 42.1 steering wheel disconnect required.

SUSPENSION: Race car type suspension required. Solid suspension prohibited. Shock absorbers required for all four wheels. After market suspensions permitted.

TIRES: Automotive type tires designed specifically for racing required. Tires cannot be located outside of bodyline. Manufacturer, model and size information must be clearly designated. Tires must be 315 DOT Radial Tire, maximum width of 12 inches or 29.5 x 10.5
slicks.

WHEEL BASE: Wheelbase must be within 2” of factory specs. Maximum variation is 2” side to side. Wheelbase will be measured from centerline of front spindle to centerline of rear axle.

WHEELIE BARS: Strictly prohibited.

WHEELS: Wheels meeting SFI spec 15.1 recommended. Maximum width 16”.

DRIVELINE AND ENGINE

CLUTCH AND FLYWHEEL: Clutch and flywheel meeting SFI 1.1, 1.2, 1.3, 1.4, or 1.5 certification required. SFI 30.1 flexplate required on all torque converter equipped cars.

CYLINDER BORE SPACING: Bore Spacing is set at a maximum of 5.300”.

DRIVELINE: A full 360 degree driveshaft tube is required over yoke, extended a minimum of 12” required from transmission tail shaft. Minimum thickness of tube housing is .050” chrome moly or titanium. Two piece units accepted with a minimum of 6 3/8” grade 8
bolts.

ENGINE CONTAINMENT SYSTEM: SFI 7.1 lower engine containment system required. If a flexible 7.1 system is not utilized, an ADRL approved carbon fiber or aluminum belly pan with a minimum 2” vertical lip is required.

EXHAUST: Automotive type system designed specifically for racing required. Exhaust gasses must be directed out of the body towards the rear of vehicle and away from the driver and fuel system. Mufflers mandatory,inserts are not considered mufflers. Turbocharged cars are not required to use mufflers. Zoomie headers are strictly prohibited.

HARMONIC BALANCER: SFI 18.1 certification required.

FLYWHEEL SHIELD: SFI 4.1 certification required.

FUEL: Alcohol, gasoline and methanol allowed. The use of nitromethane is strictly prohibited.

INTAKE MANIFOLD: An ADRL approved burst panel is recommended on all vehicles.

NITROUS OXIDE: Allowed.

POWER ADDER: Single power adder only. Dual power adders permitted only on 4 and 6 cylinder engines.

REAR END: Aftermarket axles and axle retention devices mandatory. Titanium wheel studs prohibited.

STARTER: Required. All entries must be self starting. No push starts allowed.

SUPERCHARGER: Allowed.

TURBOCHARGER: Allowed. Max size 94 mm.

TRANSMISSION: Any type allowed.

MISCELLANEOUS

CREDENTIALS: A valid ADRL competition license is required. A valid NHRA or IHRA competition license may be transferred when presented with a current physical.

COMPUTER: Allowed.

DATA AND ELECTRONICS ACQUISITION: Allowed.

STARTING LINE ENGINE CONTROL DEVICES: Allowed.

TOW VEHICLES: Allowed. A valid driver’s license is required to operate any type of tow vehicle. All passengers must be seated inside of vehicle with all doors closed. Riding in open hatchback, trunk or cargo area not allowed. ATV’s are allowed with a maximum of
one passenger who must be seated at all times. Golf carts are allowed with a maximum of four passengers who must be seated at all times. Posted pit speeds must be obeyed at all times. If pit speed is not posted, maximum pit speed will be 5 mph.

SAFETY EQUIPMENT

DRIVER RESTRAINT SYSTEM: SFI 16.1 certification required (7 point system recommended).

FIRE SYSTEM: Required (SFI 17.1 system recommended). System must contain a minimum of 10 lbs. of fluid or gas fire suppression agent for naturally aspirated and nitrous oxide equipped entries. System must contain a minimum of 20 lbs. of fluid or gas fire suppression agent for supercharged, turbocharged and methanol burning entries. One nozzle required inside driver’s compartment must be directed at driver’s feet. Two or more nozzles must be directed at front of engine and fuel cell. All fire suppression must be released with a single actuation (i.e. single handle, button or lever).

HEAD AND NECK RESTRAINT: SFI 38.1 required. An aluminum skid plate located above driver’s head is recommended.

HELMET: SN-2005 or newer, SFI 31.2 or 41.2 required. Use of open face helmet prohibited. Eject Helmet Removal System (Part # SDR 890-01-30) or equivalent required.

MASTER ELECTRICAL CUTOFF: Required. Must be clearly labeled “PUSH OFF”.

PARACHUTES: Mandatory. Separate shroud-line mounting points with 1/2” sleeved grade 8 bolts required.

PROTECTIVE CLOTHING: A driver’s suit meeting SFI 3.2A/15, gloves meeting SFI 3.3/5 and shoes meeting SFI 3.3/5 required.

RF SHUTDOWN RECEIVER: Properly functioning Electrimotion shutoff device (part numbers SB001 and RF001) recommended.

ROLL BAR PADDING: SFI 45.1 required.

TRANSMISSION: All transmissions must be covered by a one piece SFI 4.1 restraint.

UPHOLSTERY: Driver’s seat foamed with energy absorbing material, formed for the driver and covered with flame retardant material is recommended. Lateral helmet supports recommended.

WINDOW NET: SFI 27.1 required.

It's really a shame that most guys will run a slick though.

well if they made a 315 radial like the 275..........

56Tbird wrote:Rick you should put some radials on your car ,then you could drive it to the car shows.That'd make it fun to drive too

Don't worry about it Mullit head. Get me that measurement like I ask.

richter69 wrote:well if they made a 315 radial like the 275..........

Power management......

I understand that, but I think given the choice of the two tires thats the reason they go with the slick over the 315

richter69 wrote:I understand that, but I think given the choice of the two tires thats the reason they go with the slick over the 315

and they certainly arent going to have a radial prepped track

richter69 wrote:I understand that, but I think given the choice of the two tires thats the reason they go with the slick over the 315

True statement

bruno wrote:

richter69 wrote:I understand that, but I think given the choice of the two tires thats the reason they go with the slick over the 315

and they certainly arent going to have a radial prepped track

They'll figure it out......

I'm looking forward to watching it here at VMP in a couple weeks.

doesnt the new pro275 tire hook better than the old 275 tire and act more forgiving like a slick ?

5pointslow wrote:doesnt the new pro275 tire hook better than the old 275 tire and act more forgiving like a slick ?

Basicly yes....still need to treat it as a radial though

Check out the new rules. Much better. Have to run a radial. Easier to read.

Front exit exhausts, like bull horns, seem to be prohibited.

Maybe not, kinda vague about that.

BigBlockRanger wrote:Front exit exhausts, like bull horns, seem to be prohibited.

Maybe not, kinda vague about that.

Just point them up, back, or out. All legal: bull horns, zoomies, etc...

whatbumper wrote:

BigBlockRanger wrote:Front exit exhausts, like bull horns, seem to be prohibited.

Maybe not, kinda vague about that.

Just point them up, back, or out. All legal: bill horns, zoomies, etc...

This...