American DRAGCAR

The American Drag Racers Affiliated Guild of Competition Acceleration Recreation

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ProDrag Eliminator

Pro DragStar (Pro/D)

Pro DragStar  is open to all naturally aspirated full bodied, altered, and dragster type vehicles.
Nitrous oxide, superchargers, and/or turbochargers are prohibited in Pro/D.

Pro DragStar 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 608 c.i. with a 2.405" intake valve and .885" lift equates as;
608 x .75 = 456.00
456.00 + 150 x 2.405 x .885 = 1289.83
Round this number to 1290

An Engine Performance Factor of 1290 falls under F-9 and would have a minimum weight of 1900 pounds.

Pro/D is technically formulated around a 7.00 base index.
Actual performances will likely be in the mid to high 6 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 2700 1824-1894   F-6 2200 1474-1543   F-11 1700 1123-1192
F-2 2600 1754-1823   F-7 2100 1404-1473   F-12 1600 1053-1122
F-3 2500 1684-1753   F-8 2000 1333-1403   F-13 1500 983-1052
F-4 2400 1614-1683   F-9 1900 1264-1332   F-14 1400 913-982
F-5 2300 1544-1613   F-10 1800 1193-1263   F-15 1300 <-912

Body:

Pro DragStar vehicles must currently meet hosting facility's safety guidelines.

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:

Unlimited.

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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