DUKES RULES

Revised for 2018:

 

 

APPROVED MODELS

  • Stock rear wheel drive car; any year or model.

  • May be carbureted or fuel injected.

  • Trucks allowed, including: 1/4 ton S10, 1/4 ton Blazer 1/4 ton Ford Ranger, 1/4 ton Dodge Dakota with carbureted V8 added and 2 wheel drive only.

  • Non sports cars only!

TIRES & RIMS

  • 14", 15", 16", 17" Street tires on steel rims, can be summer or winter tires. 60s, 65s, 70s, 75s, 80s, with no alterations.

  • All four rims must be the same size diameter and width.

  • Maximum 3" backspace. If less than a 3" backspace, the rim is not allowed.

ROLL CAGE

  • H-frame and 3 drivers door bars covered with 1/8" plate is Mandatory.  To be mounted to the frame by weld, or bolted with 4 1/2" bolts per mounting point minimum.

  • 4 point cage recommended; you are allowed to pipe from the front to the back of the car for your own safety.

  • Make it safe, and make it tough! THE WALL DOES NOT MOVE!

 

SAFETY GEAR

  • Full face helmet required.

  • Fire-resistant coveralls or Fire Suit is mandatory.

  • Proper gloves and boots are to be worn.

  • A neck collar or  Hans Device is highly recommended.

  • A 2.5 lbs fire extinguisher and a main power shut off switch located by drivers door is mandatory.

  • Used/new 10 years and/or newer, 3", 4 or 5 point safety belts are mandatory.

  • Car will be going through tech inspection prior to each event, so make sure your car is safe, has no leaks, and that nothing is falling off.

  • Anything that tech officials want changed, shall be changed prior to racing. Again, MAKE YOUR CAR SAFE!

BODY

  • Body will remain stock appearing, with all steel panels. Plastic nose and tail allowed if needed.

  • All glass and lights are to be removed (except for the windshield).

  • You may replace the windshield with minimum 1/8" lexan, no plexi-glass.

  • Rear break light may remain in back window.

  • Minimum of  2 hood pins and hood latch removed, stock hinges must remain in car.

  • Minimum 2 trunk pins and trunk latch removed, stock trunk hinges must remain.

  • Hood and trunk must be easily accessible in the event of an emergency.

  • Must be a chain or cable for recovery purposes on front and rear bumpers (strong enough to remove car from the track).

  • Engine compartment and trunk compartment sealed off from drivers compartment (all holes in body covered or fixed).

  • You must be safe in the event of a fire!

BRAKES

  • Stock 4-wheel working breaks. All stock components matching the year, make, and model of the vehicle only.

STEERING, CASTER, & CAMBER

  • All stock components matching the year, make, and model of the car/truck only.

  • Castor and camber open rule, do as you wish.

SUSPENSION

  • All stock components matching the year, make, and model of the car/truck only.

  • Shocks must be stock and in factory position (one shock per corner only).

  • Springs can be heated and or shortened. You can use any spring from any factory coil car/truck.(Heavy truck spring recommend for the right front corner).

  • Absolutely no racing or race rated springs, and no height adjusters are permitted.

  • Shims allowed for correcting height (plywood or steel shims, no adjustable shims).

SWAY BAR

  • Stock sway bar for year, make, and model of car/truck.

  • Using factory Sway bar link on the right front, and 1/2" bolt/nut/washer on left front (this is the only adjustment allowed on the front of a Dukes car).

RIDE HEIGHT & WEIGHT

  • 6" minimum ride height.

  • Must weigh at least 3600lbs with driver in the car at the beginning of each race.

  • Maximum 53% left side weight, and maximum 45% rear weight.

  • The track holds the right to add weight as seen fit for fair competition.

  • If you are caught cheating in any way you will lose 1% of you left side weight per every illegal infraction (subject to change).

FUEL SYSTEM

  • All stock gas lines must be in good shape or new condition, and kept away from hot areas and pinch points.

  • Fuel cell highly recommended.   

  • Factory tanks  mounted in the trunk area of the car, and factory tanks mounted in the stock position above the rear end area will be permitted.

  • Factory tanks mounted under the trunk must be moved in to the trunk area as far ahead as possible.

  • AGAIN, MAKE IT SAFE!

ENGINE, TRANSMISSION, & GEARS

  • All stock only - no power adders, no modifications, stock manifolds, stock breather or air box only, factory carburetors for that model of car (no aftermarket carbs).

  • All stock fuel injection system no chips or tunes.

  • Must meet vacuum of year make and model of car.

  • Must meet compression of year make and model of car.

  • IF THE VEHICLE COMES CARBURETED, YOU CANNOT MAKE IT FUEL INJECTED.

 

Built Motor

  • All engine parts must meet OEM specs for that engine and brand.

  • Solid mounts acceptable, provided they conform to OEM specs.

  • Engine must be located in stock position.

  • GM: May run 305 or 350.

  • Ford: May run 302 or 351 Windsor.

  • Mopar: May run 318 or 360 cu in. only with factory production firing order.

  • NO 327 cu.in engines

 

The following specs are for GM 350, 351 Windsor, and 360 Mopar:

Bore/Stroke

  • 350 Chev-4.000"/3.485"

  • 351 Ford-4.000"/3.500"

  • 360 Mopar-4.000"/3.578"

  • .030 over bore permitted.

 

  • Cam/Lifters, hydraulic lifters (no mushroom type), and a hydraulic lifter cam shaft with maximum specs as follows (all measured at the valve):

  • GM lift-intake .390 Exhaust .410

  • Ford lift-intake .419 Exhaust .448

  • Mopar lift-intake .419 Exhaust .410

  • No solid anti-pump or rod lifters.

  • Camshaft must have stock duration.

  • VACUUM 18"@ 800 RPM (THE ENGINE MUST BE ABLE TO ACHIEVE 800 RPM AT IDLE IN PARK WITH NO THROTTLE OR MIXTURE SCREW ASSISTANCE.)

  • NO standard or 2 speed power glides allowed.

  • Factory 3 or 4 speed transmissions, unaltered only.

  • ANY REAR GEAR ALLOWED, LOCKER (WELDED)ALSO ALLOWED (NO POSI OR DETRIOT LOCKERS ALLOWED).

EXHAUST

  • Stock manifolds.

  • No headers. \

  • Any size pipe - single or duals allowed.

  • Must exit behind the drivers compartment away from fuel cell.

  • NO X PIPING ALLOWED.

COOLING SYSTEM

  • All stock, must have over flow catch can. Water only!

BATTERY & CHARGING SYSTEM

  • All stock, battery must be mounted to the frame and covered.

  • A plastic battery box is recommended.

  • MAIN POWER SWITCH MOUNTED AT DRIVERS DOOR AND MUST SHUT DOWN THE CAR WHEN TURNED TO OFF POSITION! THIS MUST BE MARKED ON/OFF!

WEIGHT

  • All added weight ballast must be painted white and have the car # marked on them.

DRIVE SHAFT

  • Drive shaft must be painted white with the car # on it.

 

NUMBERS

  • Big and clear numbers are to be in the following locations: on the roof, both sides of the car in the door area, and on the top right side of the windshield.

© Speedway Miramichi Inc. 2018 - Website proudly created with Wix.com

Background Photo Credit Mike Francis (Used with permission)