PRO BOOST Class Rules
Pro Boost or PB followed
by car number. Numbers must be at
least 4” tall and on both side
windows, upper left of rear window and
upper right of windshield.
Decals Required on both sides of the
vehicle, front fender or hood scoop.
PDRA Logo required on both sides of
Alternates receive ONLY 25 entry
FIELD: 16 car qualified field.
There must be 13 or more teched
entries to justify a 16 car field.
(1) Supercharged entries @ 2525 lbs
(2) Supercharged entries @ 2475 with
no lockup with 3 speed or less
(3) Turbo entries @ 2525 lbs with
maximum of 88mm
(4) Turbo entries @ 2600 lbs
(5) Hemi head motors are limited to a
4.900 bore space
(6) Wedge head motors are limited to
a 5.000 bore space
entries 2475 (non lock-up)
entries 2525 (with lock-up)
Supercharger Small Blocks Minimum
weight at conclusion of run, including
driver 2,350 lbs.
Single Turbo Small Blocks Minimum
weight at conclusion of run, including
driver 2150 lbs.
Single Turbo Big Blocks Minimum weight
at conclusion of run, including driver
Twin Turbo Small Blocks Minimum weight
at conclusion of run, including driver
4 cyl. Minimum weight at conclusion of run,
including driver 2,000 lbs.
(Any Turbo Size)
Minimum weight at conclusion of run,
including driver 2,100 lbs.
(Any Turbo Size)
All rules subject to change at the
sole discretion of the PDRA Technical
REQUIREMENTS AND SPECIFICATIONS
BODY: Funny car or one piece bodies
not allowed even if equipped with
doors. Maximum front end overhang of
45” as measured from centerline of
front spindles. An PDRA accepted
extension may be used to reach 45” if
the front end overhang of the body is
less than 45”. All bodies must
originate from a production vehicle.
All new cars must be accepted by the
PDRA competition department prior to
construction. All vehicles must be
professionally finished, painted,
lettered, numbered and decaled.
DOORS: Required. Doors must be
functional and able to be opened from
both the inside and outside of the
vehicle. Doors may be fabricated from
carbon fiber, fiberglass or metal. A
metal deflector between the fenders
and the leading edge of the doors is
FIREWALL: Magnesium, aluminum or
composite not allowed. All firewalls
must be made of steel or titanium
.024” minimum thickness.
FRAME: Chassis must meet SFI Spec
25.1. Chassis must be recertified
yearly by the PDRA and have
specialized sticker affixed to roll
cage before participation. See General
Regulations 4:4, 4:11, 10:6. A panel
of .032-inch aluminum, .024-inch
steel, or carbon fiber must be
installed on the inside portion of the
roll cage anywhere the driver's legs
can come into contact with the cage.
Panels must be installed in the front
and lower portion of the drivers-side
X brace. Panels must attach to the
interior side of the tubing, or no
further than the middle of the tubing,
with "impact-type" padding attached to
the panels. Padding must extend to be
flush with X brace. Minimum padding
thickness is 1/4 inch. An additional
panel(s) of .032-inch aluminum,
.024-inch steel or carbon fiber must
be installed in the roll cage roof
area. The panel(s) must, at minimum,
extend from the drivers side roof bar
to the centerline of the vehicle. The
panel(s) in the Funny Car cage area
must be removable for proper chassis
certification inspection. Racecars
built before 2015 has a 12 month grace
period. All racecars must meet
requirements listed above by 2016.
FLOORS: Replacing stock floors with .024” steel or .032”
aluminum allowed. Driver’s side floor pan must be .024” steel
and must be welded in place extending from firewall to back of
driver’s seat. Carbon fiber or aluminum may be
utilized in the passengers portion of the flooring in the
HOOD SCOOP: Allowed. One opening only.
Must be finished and painted to follow
the bodies paint scheme
TAIL LIGHT: Functional rear tail light
is required. Tail light must be
permanently mounted and controlled
from the driver’s compartment.
WINDOWS AND WINDSHIELD: Required. May
be replaced 1/8” inch think lexan,
plexiglass or other shatterproof
material. An opening with a 4”
diameter minimum is required on side
windows adjacent to the driver.
BATTERY: Maximum of two batteries
allowed. All batteries must be
securely fastened. An external master
electrical shut off clearly labeled
“PUSH OFF” is required.
BRAKES: Four wheel brakes with dual
master cylinder mounted above frame
CHASSIS: SFI 25.1 E or 25.2
DRIVER LOCATION: Must be in stock
location, on left side of vehicle.
GROUND CLEARANCE: Minimum of 3”
required from whatever portion of the
vehicles body or chassis that breaks
staging beam to 12” behind front axle
STEERING: SFI 42.1 steering wheel
SUSPENSION: Race car type suspension
required. Solid suspension prohibited.
Shock absorbers required for all four
TIRES: Automotive type tires designed
specifically for racing required.
Tires cannot be located outside of
body line. Manufacturer, model and
size information must be clearly
No Radial Tires allowed.
WHEEL BASE: Minimum 100", Maximum
115". S-10, Ranger, Dakota Maximum
125”. Maximum variation is 2” side to
WHEELIE BARS: Required. Non-metallic
WHEELS: Wheels meeting SFI spec 15.1
mandatory. Maximum width 16”. Use of a
liner mandatory on all non bead lock
DRIVELINE AND ENGINE
CLUTCH AND FLYWHEEL: Clutch and
flywheel meeting SFI 1.3, 1.4, or 1.5
certification required. SFI 29.1
flexplate required on all torque
converter equipped cars
(SFI 29.2 recommended).
Maximum bore space on Supercharged or
Turbos is 5.000 inches.
DRIVELINE: A full 360 degree
driveshaft tube is required over yoke,
extended a minimum of 12” required
from transmission tail shaft. Minimum
thickness of tube housing is .050”
chromemoly or titanium. Two piece
units accepted with a minimum of 6
3/8” grade 8 bolts. SFI 43.1
ENGINE CONTAINMENT SYSTEM: SFI 7.1
lower engine containment system
required. If a flexible 7.1 system is
utilized, it must be accompanied by a
carbon fiber or aluminum belly pan
with a minimum 2” vertical lip.
ENGINE SETBACK: Maximum of 10% of
total vehicle wheel base as measured
from the centerline of the forward
front spindle to center of front spark
EXHAUST: Automotive type system
designed specifically for racing
required. Exhaust gasses must be
directed out of the body towards the
rear of vehicle and away from the
driver and fuel system.
All removable multi-piece exhaust
collectors/stacks must be securely
fastened with either an NHRA-accepted
header tether, a minimum ½”
(half-inch) stitch weld located on
each primary tube or be permanently
attached to the vehicle body or frame
with positive fasteners (i.e. exhaust
hangers, support brackets, bolts/nuts,
etc.) such that they require tools for
HARMONIC BALANCER: SFI 18.1
FLYWHEEL SHIELD: SFI 6.3 certification
FUEL: Alcohol, gasoline and methanol
allowed. The use of nitromethane is
INTAKE MANIFOLD: An PDRA accepted
burst panel is required on all
NITROUS OXIDE: Prohibited.
REAR END: Automotive type,
Full-floater rear end required.
Titanium Wheel studs prohibited.
Mark Williams EV4 or Strange
STRL-5500SBB two-piece axle system
board or remote starters allowed.
SUPERCHARGER: 14-71 Superchargers
only. No overdrive restriction. No
rear gear restriction.
PRO CHARGER: Allowed at same weight of
Superchargers (2500 lbs.)
TRANSMISSION: Any type allowed.
CREDENTIALS: A valid competition
license is required. A valid NHRA or
IHRA competition license will be
accepted and may be transferred when
presented with a current physical.
When an event is contest at an NHRA
Member track only PDRA or NHRA
competition licenses will be accepted.
DATA AND ELECTRONICS ACQUISITION:
STARTING LINE ENGINE CONTROL DEVICES:
TOW VEHICLES: Allowed. A valid
driver’s license is required to
operate any type of tow vehicle. All
passengers must be seated inside of
vehicle with all doors closed. Riding
in open hatchback, trunk or cargo area
not allowed. ATV’s are allowed with a
maximum of one passenger who must be
seated at all times. Golf carts are
allowed with a maximum of four
passengers who must be seated at all
times. Posted pit speeds must be
obeyed at all times. If pit speed is
not posted, maximum pit speed will be
DRIVER RESTRAINT SYSTEM: SFI 16.1
certification required (7 point system
FIRE SYSTEM: SFI 17.1 system required.
System must contain a minimum of 20
lbs of fluid or gas fire suppression
agent. One nozzle required inside
driver’s compartment must be directed
at driver’s feet. Two or more nozzles
must be directed at front of engine
and fuel cell. All fire suppression
must be released with a single
actuation (i.e. single handle, button
HEAD AND NECK RESTRAINT: SFI 38.1
required. An aluminum skid plate
located above driver’s head is
HELMET: SN-2010 or newer, SFI 31.2 or
41.2 required. Use of open face helmet
prohibited. Eject Helmet Removal
System (Part # SDR 890-01-30) or
MASTER ELECTRICAL CUTOFF: Required.
Must be clearly labeled “PUSH OFF”.
PARACHUTES: Dual parachutes required.
Separate shroud-line mounting points
with 1/2” sleeved grade 8 bolts
PROTECTIVE CLOTHING: A driver’s suit
meeting SFI 3.2A/20, gloves meeting
SFI 3.3/20, shoes meeting SFI 3.3/20
and a head sock meeting SFI 3.3
required. A head sock is not required
when a helmet manufactured with a
skirt meeting SFI 3.3 is used.
RF SHUTDOWN RECEIVER: Properly
functioning Electrimotion shutoff
device (part numbers SB001 and RF001)
ROLL BAR PADDING: SFI 45.1 required.
TRANSMISSION: All transmissions must
be covered by a one piece SFI 4.1
UPHOLSTERY: Driver’s seat foamed with
energy absorbing material, formed for
the driver and covered with flame
retardant material is required.
Lateral helmet supports required.
WINDOW NET: SFI 27.1 required.
BE SURE TO ALSO VIEW OUR "OVERALL / GENERAL SERIES RULES"