Umpdirtcarroundup

Chairman: Donnie Hoener - 636-928-1716
Call to see if your car is legal

FACTORY STOCK

1. U.S. manufactured full body passenger car style, full frame or unibody, 1950 or newer.

2. Steel aftermarket template body with steel roof is optional. Rub rails beattached to body from fender well, flush with body

3. All windows in body will remain open. (rear quarter windows may be closed in) NOTE: Driver seat may be no further back than quarter post. Aftermarket plastic nosepieces may be used.

4. All doors must be bolted or welded shut.

5. No cutting on body allowed except for tire clearance. May remove inner fenders.

6. Must have steel floor pan from front firewall to the rear of the driver’s seat. Floor pan must follow near to stock lines from front firewall to rear firewall

and extend frame rail to frame rail.

7. Body must match engine manufacturer (i.e. Ford body, Ford engine)

8. Rear tail area must be stock appearing.

9. No slab bodies. Body must resemble factory body style.

CHASSIS/FRAME

1. Must be full frame.

2. 108" wheel base minimum, and must be stock for body/chassis used.

INTERIOR

1. Interior must be completely gutted. No mirrors.

2. Firewalls must be completely covered with sheet metal and extend door to door. Must extend down from top of fenders to top of frame rails on both sides. (Only tunnel (10" max height) allowed is drive shaft/transmission tunnel.) Front firewall must follow near to stock lines. Rear firewall must be straight across.

3. Racing seat only. Must be securely mounted to roll cage.

4. Must have 4-point roll cage, 1^1/_2" O.D. minimum, with minimum .095 wall thickness, mild steel with 3 door bars driver side and 2 door bars passenger side.

ENGINE

1. Must be stock. Cast iron intake, heads and block.

2. Stock ignition only. No dual point distributor. No magnetos. No MSD boxes.

3. No electric or belt driven fuel pumps. No electric water pumps.

4. Headers permitted. Exhaust must exit under car. No exhaust permitted inside the car.

5. No alcohol allowed!

6. One 2-barrel carburetor only of stock production type. Must be Rochester or Holley with choke horn unaltered. No fuel injection systems. Must bolt directly to intake manifold, no spacers.

7. The following heads are permitted:

GM 327-350 cid: 126, 185,339,441,487,493,624,882,993,& 997.

GM 283-305-307 cid: 416,434,450,520,601,896.

Ford 351w:Wcid C90E, & later

Ford 289-302: Wcid-any O.E.M. cast iron windsor head

Chrysler 318: any O.E.M. 318 cast iron head

No Porting or Polishing

8. Flat top or dish pistons ONLY!

9. Hydraulic/Flat Tappet Mechanical, stamped steel rocker arms only, No roller rockers or roller tip rockers. No roller cams!

BRAKES

1. Must have three-wheel brakes, and lock up during inspection.

2. No shut off device.

DRIVE TRAIN

1. Must have stock O.E.M. flywheel,clutch and pressure plate as per make of engine. Hydraulic throw out bearing is permitted. Manual transmission must run blow proof steel bell housing.

2. No racing transmissions - no Berts, no Brinns, etc

3. All cars must start, stop and operate in forward and reverse while the engine is running. All gears must work!

4. Any O.E. car or truck rear end. No quick-change device. Floaters optional, but strongly recommended.

TIRES & WHEELS

1. All wheels must be steel 8" maximum with 1" lug nuts.

2. Right front and right rear must be racing wheels. One bead lock permitted!

3. Stock D.O.T. radial passenger tires or Hoosier E-mods A or H only! No mud,snow or recaps allowed. No bleeders!

SUSPENSION

1. Front suspension and steering must be unaltered O.E. and in stock location, and must be replaceable by stock part from same type suspension.

2. Stock passenger car spindles only, no fabricated spindles. Bottom A-frames cannot be altered or moved.

3. Quick release hub and steering quickener are optional.

4. Shocks must be in stock location. One steel body shock and spring per wheel,

5. Rear suspension must be stock.

6. No Macpherson struts or coilovers. No coilover eliminators.

7. No suspension/driveline parts or mounts permitted inside the driver’s compartment.

SAFETY

1. UMP DIRTcar rules

FUEL CELL

1. Approved fuel cell required. Must be securely fastened inside trunk of car. All cell mounts must be steel, attached to frame or cage. Fuel cell must be in metal container. Gas only, no alcohol, no additives.