Power Challenge Series
***All Dates Are Confirmed Good
Even If Not Shown On Track Website Schedules***
What is AmericanDRAGCAR
To answer that question,
consider this question;
What is the
definition of drag racing?
n. 1. a competition of acceleration between multiple vehicles on a
straight course with the objective being to cross the finish line first.
There is no
"breakout" in drag racing.
So, to answer
the first question;
is drag racing!
is the drag racing
venue which has solved the age old dilemma of how to create an equal playing
field non-breakout drag racing competition where nobody gains any substantial
advantages over anybody else simply by having a larger monetary racing budget to
put down traditional bracket racing, but if you have ever wanted just to race to
the finish line without being sent home because you actually got to the finish
line first, then AmericanDRAGCAR
incorporates a variety of formats into it's venue which all focus on providing
racers and spectators with an all-out drag racing program which remains fair for
all participants involved and more exciting and easily understood to watch.
creating a drag racing format with no breakout which remains fair for all
requires an intricate rules outline that reads a bit difficult and this is the
only drawback to newcomers to DRAGCAR
but once it's understood, it's easy to see how it works to provide for some
outstanding no-breakout drag racing that everybody can enjoy.
Let's Go DRAG
indexing formula is a complex equation which takes into account a number of
basic engine specifications to establish it's power producing capabilities. This
then becomes factored into the weight of the vehicle and converted into an
on-track performance index standard.
The base indexing factors are:
Vehicle Weight (with the driver)
2: Total Cubic Inch Engine Displacement (cc's and liters will be converted
3: Actual Intake Valve Head Diameter
4: Gross Intake Valve Lift (@ zero valve lash)
5: Carburetor/Injection Throttle Bore Size and Quantity (2 barrel, 4
6: Method of Induction (Naturally Aspirated, Super/Turbocharged, N2O
7: Type of Fuel being Used (Gasoline/Methanol)
Due to the complexity of this
formula, having a number of "if" equations, racers wishing to know
their indexes before entering into a race may at any time submit an index
request form directly from this website and have their index and minimum weights
Emailed back to them. There is no limit to the number of index requests
those with the most money from dominating the fields?|
By incorporating the engine's intake valve size, DRAGCAR
formula creates equally attainable performance standards for a wide range of
|What if I don't run as far
under index as most others in my field?|
Contrary to other class
's formula allows for
much more affordable methods of attaining competitive performances such as
camshaft swaps, carburetor swaps, varying intake valve sizes, and varying
engine displacements. This is in contrast to having no other option than to
increase the cylinder head's flow capabilities to attain favorable under
|Why does my car get indexed
so much quicker than what it really runs?|
In some cases, racers find their indexes to be far from
what they are capable of running. This is due to the formula being written
around the premise that it is a race program for race built engines. In some
cases "Mild" short duration "street" camshafts do not
utilize the maximum potential of the intake valve and, in other cases the
intake valve being used is far bigger than what the cylinder head can
efficiently utilize, therefore these types of combinations commonly cannot
attain the performance index standard.
I compete when running with a mild or overkill combination that's not able
to run under the index?|
is the "catch all" category for those who do not run under index
nor care to engage in modifying their engine combinations in order to do so
but still wish to compete in a real drag racing venue where only the racer's
ability to reach the finish line first decides the winners.
any point where running too fast will disqualify me?|
Not in the formulated index categories. DRAGCAR
true drag racing program where the first one to the finish line always
wins. However, in the adjusted index categories, there are generous
"Sandbagging" disqualification rules put into place simply to keep
racers racing while keeping the games to a true minimum.
I trust that cars running faster than mine are not being falsely claimed?|
Competitors will be subject to periodic inspections to
ensure racer integrity both by DRAGCAR
initiated teardowns as
well as through racer initiated protest teardowns.
can't I see the formula so that I can figure my own index?|
indexing formula is quite complex with many variables instilled into it
which change infinitely according to the vehicle specifics being
entered. This would be quite confusing and possibly discouraging to
some who may feel it is too complicated to try to decipher.
I build a competitive engine combination without having access to the
It's really much easier to build a competitive engine
being indexed with this formula without seeing the actual formula than one
might think. Ideally, one would merely build the engine around the intake
port by first fitting the head with a valve that is only capable of flowing
what the port is flowing. To get a close estimate to what a particular
valve size may be able to flow, use the following equation;
Dia.2 x .7854 x 91.5
for a 2.020" valve;
2.020 x 2.020 x 91.5 = 293.23
divide the intake valve diameter by three to determine the optimum gross
valve lift, and this is an ideal starting point.
if running a 2.020" valve:
2.020 / 3 = .673"
these formulas as a guide, it is likely that a good valve size for a head
flowing in the 280-295cfm range would be 2.020" and a good choice for a
camshaft would be one which opens the valve in the .650"-.700"
range with a very aggressive and well timed profile.
will work to build an instant index form on the website so that racers may
play around with a variety of specs to get a good idea of what type of
combination they would like to build for a DRAGCAR
but as of this time, racers and engine builders are more than welcome to
inquire with any number of engine combinations to be indexed. All will be
the key in DRAGCAR
having a combination that works most efficiently with the cylinder heads
that are being used.
Any questions or inquiries
may be answered via Email,
telephone, or by mail: