American DRAGCAR

The American Drag Racers Affiliated Guild of Competition Acceleration Recreation

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ProDrag Eliminator

Pro Sportsman (Pro/SP)

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

Pro Sportsman 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 357 c.i. with a 2.025" intake valve and .668" lift equates as;
357 x .75 = 267.75
267.75 + 150 x 2.025 x .668 = 565.09
Round this number to 565

An Engine Performance Factor of 565 falls under F-1 and would have a minimum weight of 3900 pounds.

Pro/SP is technically formulated around a 11.80 base index.
Actual performances will likely be in the low to mid 11 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 3900 557-571   F-6 3400 484-498   F-11 2900 411-425
F-2 3800 543-556   F-7 3300 469-483   F-12 2800 396-410
F-3 3700 528-542   F-8 3200 455-468   F-13 2700 382-395
F-4 3600 513-527   F-9 3100 440-454   F-14 2600 367-381
F-5 3500 499-512   F-10 3000 426-439   F-15 2500 <-366

Body:

Pro Sportsman 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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