American DRAGCAR

The American Drag Racers Affiliated Guild of Competition Acceleration Recreation

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ProDrag Eliminator

Pro Gas (Pro/G)

Pro Gas is reserved for all naturally aspirated full bodied factory production body styles.
Nitrous oxide, superchargers, and/or turbochargers are prohibited in Pro/G.

Pro Gas Class Weights and Factor Chart

(Actual Cubic Inch x .75) + 150 x Intake Valve Diameter x Gross Valve Lift = Engine Performance Factor

Example: An engine of 434 c.i. with a 2.085" intake valve and .686" lift equates as;
434 x .75 = 325.50
325.50 + 150 x 2.085 x .686 = 680.11
Round this number to 680

An Engine Performance Factor of 680 falls under F-6 and would have a minimum weight of 3000 pounds.

Pro/G is technically formulated around a 10.20 base index.
Actual performances will likely be in the high 9 second range depending on hosting altitudes.
Power to Weight Formula Minimum Weight Engine Performance Factor   Power to Weight Formula Minimum Weight Engine Performance Factor   Power to Weight Formula Minimum Weight Engine Performance Factor
F-1 3500 771-793   F-6 3000 658-680   F-11 2500 545-566
F-2 3400 749-770   F-7 2900 636-657   F-12 2400 522-544
F-3 3300 726-748   F-8 2800 613-635   F-13 2300 499-521
F-4 3200 703-725   F-9 2700 590-612   F-14 2200 477-498
F-5 3100 681-702   F-10 2600 567-589   F-15 2100 <-476

Body:

Pro Gas vehicles must retain full body exterior appearance.

All body components such as roof, hood, doors, fenders, bumpers, etc. must remain in place.

Fiberglass and/or aluminum body components permitted.

Doors must remain functional.

Chassis:

Must currently meet hosting facility's safety guidelines.

Suspension:

Air bags may not be used to replace coil springs, leaf springs, or torsion bars.

Engine:

Any make engine permitted.

Minimum gross intake valve lift must be equal to no less than 31 percent of the intake valve diameter.

Example: If intake valve diameter is 2.02" then multiply 2.02 by .31 and round to the nearest thousandth to find minimum acceptable gross valve lift of .626" or

2.02 x .31 = .626

Engines having valve/lift combinations where the gross intake lift does not meet the minimum specification will not be disallowed from competition. In these instances vehicles will be factored using the minimum valve lift specification for the intake valve diameter being utilized.

Example: If running a 2.02" intake valve with less than .626" gross lift, .626 will be used in the Engine Performance factoring formula to assign the appropriate minimum weight to the vehicle.

Fuel:

Gasoline

Interior:

Must currently meet hosting facility's safety guidelines.

Tires:

Tire tread is not allowed to protrude outward past the outermost portion of the wheel-well opening

Electronics:

Delay boxes are prohibited.

Pre-Stage

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NO More BREAKOUTS!

 

Real Drag Racing is Back with  American DRAGCAR!

 

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