ULTRA STREET SHOOTOUT 2019 (Final 1 8 19)
Ultra Street is a heads-up small tire class
designed for American production vehicles. Small
block and big block engines are allowed the use of
a single power adder which is restricted in size
to maintain class parity. Cross breeding of an
engine to a different make/manufacturer body is
Note: This set of class rules is presented to all
competitors under the assumption that any
modifications not specifically written within
these rules shall be deemed illegal, unless the
competitor has the expressed written consent from
the Event Tech Director.
This class will be a 32 car heads-up field, 1/8
mile, Pro Style Ladder on a .400 Pro Tree.
ENGINE POWER ADDER BASE CIDBASE WEIGHT
Small Block (Inline head) N/A 470 2500
Buick, Olds, Pontiac, Mopar N/A 632 2750
(Any single carb / TB intake permitted)
Small Block (AMC) Nitrous 440 3000
Small Block Nitrous (base starts with Chevy 23deg
non raised head) 440 2875
Small Block 76mm Turbo (Cast) 440 3050
Small Block Supercharger 440 3025
(91mm/9.75inch volute) (ADD 50lbs for 91mm/9.76
and larger volute)
Small Block Supercharger 440 3250
(94mm/9.75inch volute) (ADD 50lbs for 94mm/9.76
and larger volute) (Deduct 50lbs for cast wheel)
Small Block Supercharger 4.0L 440 3200
(Twin Screw/Roots) (ADD 100lbs for 4.5L Twin
Screw/Roots) (Eaton 2.65L Deduct 100lbs)
Big Block N/A 632 2800
(big block with 9.8 standard deck height and
conventional head) (add 2.5 lbs. per cu in over
Big Block N/A 632 2800
(big block Ford with standard deck height and
conventional head) (over 589 add 75lbs.)
Big Block N/A 632 2850
(big block with tall deck height and conventional
head) (over 589 add 75 lbs.)
Big Block N/A 632 2875
(big block with 9.8 standard height and big chief
head) (add 2.5 lbs. per cu in over 589)
Big Block N/A 632 2900
(big block with tall deck height and big chief
head) (over 589 add 75 lbs.)
(big block Ford with standard deck height and
non-conventional head) (over 589 add 75 lbs.)
Big Block N/A 632 2925
(big block GM with Symmetrical
port/non-conventional head) (over 589 add 75 lbs.)
Big Block N/A 632 2950
(big block Ford with Pro Stock/Symmetrical type
cylinder heads) (over 589 add 75 lbs.)
Big Block Nitrous 588 3150
(big block with conventional head w/.125 plate
(add 25 lbs. fogger - max nitrous jet .046)
(SR or Dart 20* head add 50 lbs.)
Buick, Olds, Pontiac, Mopar Nitrous 588 3075 (Mopar
conventional B 1 head accepted)
Maximum CID for all small block N/A entries is 480
inches. (Add 7lbs per cu in over 470 up to 480 cu
Maximum CID for all small block Boosted entries is
Maximum CID for all small block Nitrous entries is
465 inches. (Add 2lbs per cu in over 440 up to 465
Maximum CID for all Big Block Naturally Aspirated
combos is 632 inches.
Maximum CID for big block Nitrous entries is 588
Maximum CID for Buick, Olds, Pontiac, Mopar
Nitrous combinations is 588 inches. (541 to 588 cu
in add 2lbs per cu in over 540)
Buick, Olds, Pontiac, Mopar combinations are not
permitted Boosted applications.
Any engine in question will be measured with a P&G
gauge. A correction factor of 1.5% will be used.
Competitors may be asked to remove a cylinder head
for bore and stroke measurements should any
All weights will be rounded down to the nearest
For Cylinder Head adder and deducts refer to the
Cylinder Head section. For Tire adder and deducts
refer to the Tire Section.
Add 50lbs for Boosted GEN III Hemi SBM.
Add 50lbs boosted combo on M1 (intercooler not
Add 50lbs for Cast Tunnel Ram/Sheet-metal/Dual
Carbs on SB & BB N/A
Add 50lbs for Small Block 4 Nitrous Jet dry plates
Add 25lbs for 4 link
Deduct 25lbs for N/A BBC and N/A BBF and N/A BOP
for NO forward facing scoop
Deduct 25lbs for leaf spring rear suspension
Deduct 50lbs for IRS
Deduct 50lbs for Belt driven centrifugal
Deduct 50lbs for Non Intercooled boosted combos on
Deduct 50lbs for Single 4150 carb used with 4150
intake manifold and 4150 plate system
Deduct 50lbs. for Single 4150 carb used with
(No deduct for use with EFI (SB N/A or SB Nitrous
Deduct 50lbs for Small Block/BOP/Mopar Single
entry nitrous plate system (1 nitrous/1 fuel)
(Small Block combinations with 2 Nitrous Jet dry
plate is not eligible for single entry plate
Deduct 50lbs for Boosted entries using a 312 - 365
cubic inch small block or mod motor combination.
Deduct 100lbs from 94mm base weight for V30-94B
Deduct 100lbs for Boosted entries using a 311
cubic inch or smaller small block or mod motor
Deduct 100lbs for Serpentine belt driven
Deduct 100lbs for 8.2 deck nitrous combo.
Deduct 300lbs for Inline 6 and V6.
Deduct 200lbs if using nitrous with Turbo on
Inline 6 and V6.
Deduct 500lbs from Cast 76 base for Turbo Inline 4
REQUIREMENTS & SPECIFICATIONS
Any aftermarket cast iron or cast aluminum block
permitted. All blocks are restricted to factory
OEM bore spacing for brand being used. LSX block
bolt pattern is permitted for LS based engines.
World Products Man-O-War bolt pattern is permitted
for small block Ford engines. All entries are
permitted to bush lifter bores. Billet Blocks
SFI Spec 18.1 balancer is required.
ENGINE MOUNTS & LOCATION
Engine/motor plates and mid-plates are permitted.
Engine block and cylinder heads cannot be in
contact with the firewall.
Factory OEM or aftermarket cast iron or aluminum
cylinder heads are permitted. Billet and one-off
fabricated heads are prohibited. All cylinder
heads must maintain factory OEM bolt pattern for
head and intake manifold bolts of manufacturer
brand being used. Porting is permitted. All
cylinder heads must maintain factory OEM valve
angles of +/- 2 degrees. The Event Tech Director
reserves the right to check valve angle either on
or off the vehicle.
Small Block Ford (specific head weight adds – if
your head is not called out specifically see notes
• Edelbrock GV2 PN#773169, PN#77319 (Nitrous
combos add 75lbs)
• Edelbrock SC1 (Nitrous combos add 125lbs)
• FRPP C3, C302B, C302 (Nitrous combos add 50lbs)
Small Block Chevrolet (specific head weight adds –
if your head is not called out specifically see
• Air Flow Research LS3 Mongoose 12 Degree
(Nitrous combos add 75lbs. Boosted combos add
• All Pro 12 Degree Wedge Head #RE13 & #RE11
(Nitrous combos add 50lbs)
• All Pro LS -2 and -5 or any LS 12* square port
(Nitrous combos add 75lbs. Boosted combos add
• Brodix, BR7 (Nitrous combos add 50lbs. Boosted
combos add 100lbs.)
• Edelbrock LS-R PN#770468/Mast 510-215 (Nitrous
combos add 100 lbs.)
• ETP C5X (Nitrous combos add 75lbs, Boosted
combos add 50lbs)
• Profiler 219(Nitrous combos add 75lbs)
• Trick Flow – 18 Degree (Nitrous combos add
Chevrolet Big Block Conventional Port
• Brodix SR20 (Nitrous combos add 50lbs)
• Dart 20deg head (Nitrous combos add 50lbs)
• Roland Racing R2 (CV-1) (Nitrous combos add
• Tiger Head (Nitrous combos add 25lbs)
Note: Stock factory OEM heads are those cylinder
heads that are factory production line installed
on production vehicles as recognized by NHRA. *NA
BB Heads are called out above with specific
Unless Otherwise Noted-
SB Raised intake runner Chevy 23deg, Ford 20deg or
LS 15deg / OEM Z06 12deg - add 50lbs (Except N/A
and LS Cathedral Port 13/15)
Any Combination using Inline non stock valve angle
add 75lbs (not permitted on boosted combos)
Any canted valve (non-inline) head add 100lbs (not
permitted on boosted combos)
Nitrous combinations using any 20deg Ford Non
raised runner intake runner add 25lbs
TFS-R Ford runs at base
Any aftermarket, commercially available, mass
produced, single carburetor, 4150 or 4500 series,
cast intake manifold permitted. Fabricated, sheet
metal, billet, and any tunnel ram intake manifold
are permitted for Small Block & BB N/A
combinations only. Modular engines are permitted
fabricated, billet and/or sheet metal intake
manifolds. Porting is permitted. Cast Holley LS
EFI ram intake permitted on boosted LS
All entries are permitted to use any conventional
single stage plate system or any conventional
single stage fogger system. The use of water
injection is permitted. The use of a plate system
with a fogger system is prohibited. Nitrous push
systems are prohibited. The use of agents other
than nitrous oxide as part of, or mixed in, the
system is prohibited. All entries must use only
gasoline for the fuel enrichment circuit. All
nitrous jets must be as-supplied, un-modified from
the manufacturer and must be a concentric circle.
No other shapes such as ovals, diamonds, etc…
permitted. All entries are permitted to use a
maximum of two 10lb nitrous bottles or a single
15lb nitrous bottle. Any method of cooling the
nitrous bottle inside the vehicle is strictly
prohibited. Bottle temperatures will be randomly
checked before and/or after a run. If the bottle
temperature is found to be colder than 65 degrees,
the run will be disqualified.
Plate System: Any conventional single stage or
cross-bar single stage plate nitrous system with a
maximum of four spray bars (two nitrous & two
Small Block combinations using a conventional
single stage, single plate nitrous system (one
nitrous jet and one fuel jet) have Unlimited
nitrous jet size.
Big Block Chevrolet or Big Block Ford combinations
using a conventional single stage, single plate
nitrous system (one nitrous jet and one fuel jet)
have a maximum of a nitrous jet size of .125.
The maximum allowable number of solenoids for any
single stage plate system is three (1 nitrous, 1
fuel and 1 redundant purge). Progressive systems
Single Stage Fogger: Any conventional single stage
nitrous fogger system permitted. One nitrous/fuel
nozzle per cylinder permitted. All entries using a
single stage fogger system have a maximum jet size
of .046. The maximum allowable number of solenoids
for any single stage fogger system is five (2
nitrous, 2 fuel and 1 redundant purge). BBC/BBF
limited to (2) .125 nitrous solenoids. Progressive
systems are permitted.
Purge System: Nitrous purge systems are permitted
a maximum of 1 solenoid. Progressive systems are
permitted to use one inline ‘’safety’’ solenoid.
Purge line must clearly exit the hood/cowl or body
in a fashion to not allow purged nitrous to enter
the engine when racing.
Nitrous Lines: All entries are required to have
one continuous -8 maximum (Plate System) and -8
maximum (Fogger System) uninterrupted (no coiling)
nitrous supply line from the nitrous bottle to the
engine. Maximum length of nitrous supply line from
nitrous bottle to nitrous supply solenoid is 15ft.
The line from the valve to the engine cannot
store/hold nitrous oxide when the system is not in
Centrifugal superchargers are limited to the
following dimensions: Maximum impeller inducer
diameter of 3.70 inches with a maximum inlet
outside diameter of 4.75 inches. Centrifugal
superchargers that are utilizing a compressor
housing of 9.76’’ or larger please refer to weight
adder/deductions section of the rules.
Supercharger impeller must be constructed from
aluminum. Centrifugal superchargers are permitted
to use any gear drive or transmission system,
including the Vortech V30 series or Procharger
F3B-91 or F3B-94. Inlets for superchargers must
not be exposed to ram air and pass a "line of
sight inspection" from the front of the vehicle,
I.E. they must be blocked off from a direct source
of air this includes closing off factory
All cast wheel turbochargers (mid-frame GT47/S400
chassis only) must be as manufactured from factory
with an “as cast” wheel. For "cast wheel turbo",
any inconsistent modifications to compressor or
turbine wheel, blades, hubs, cover, or housing,
beyond accepted commercially available
manufacturing process, is PROHIBITED. Compressor
inducer cannot exceed 76.6 mm. Maximum inlet
diameter for compressor housing will not exceed
78.6 mm (2 mm for housing/wheel clearance).
Reducers PROHIBITED. Compressor exducer (this
includes the backing plate and the tip to tip
measurement) cannot exceed 116 mm and at no point
extend past the 116 mm backing plate (i.e. no
reverse clipping of the wheel permitted). Inducer
blade tip measurement will take place at the
leading edge where the tip meets the compressor
housing and must extend to the final exducer
measurement without steps. Compressor map groove
will not exceed .250 of an inch. Any turbocharger
entry may be asked to remove the compressor cover
for tech inspection. The turbine wheel will not
exceed 96.5 mm x 88.5 mm. Turbine wheels are only
allowed to be constructed from Inconel material.
Compressor wheel/impeller must only be constructed
of cast aluminum material. Reducers PROHIBITED.
Inlets for Turbochargers must not be exposed to
ram air (see note) and pass a "line of sight
inspection" from the front of the vehicle, I.E.
they must be blocked off from a direct source of
air this includes closing off factory
holes/grills. (Gas/Q16 turbocharged entries
permitted ram air with 50lbs add)
Air-to-water intercoolers are permitted for
supercharged and turbocharged entries only. Only
one intercooler is permitted for all boosted
applications. Intercooler with M1 fuel prohibited.
Meth injection permitted on Nitrous combos only.
Any use of nozzle/injector in any engine
combination forward of throttle body/ carburetor
is strictly prohibited. All injectors on boosted
combos must be directly mounted to the intake
Any Oil System permitted. Any oil pump, vacuum
pump, and oil pan permitted. All entries are
required to use an oil retention device. Device
can be either a ballistic style blanket or a
custom built metal pan. Metal pan must extend from
the engine/motor plate rearward to the back of the
engine. Metal pan must fit inside the frame rails
and be 3 inches above the ground.
Any cooling system permitted. Radiators are not
Any exhaust system permitted. All exhaust systems
must be directed out of body and away from driver
and fuel tank. Exhaust may exit underneath car or
out the front fenders but must not affect timing
or staging beams. Bull horns prohibited.
Any electronic, mechanical or belt driven fuel
pumps are allowed. Electronic fuel pumps must shut
off with the master electric cut-off switch. Fuel
cell must have a pressure cap and be vented to the
outside of the body. Front mounted fuel cells must
meet SFI Spec 28.1 and be mounted between the
frame rails or enclosed in a round tube frame. A
round tube frame must be constructed of a minimum
of 1 ¼-inch O.D. x .065-inch chrome moly tubing.
Artificial cooling or heating of fuel (i.e., cool
cans, ice, Freon, etc.) prohibited. Circulating
systems that are not part of the normal fuel pump
system are prohibited.
Any aftermarket electronic or mechanical fuel
injection may be used. Fuel injector size and or
type are unlimited.
Any single aftermarket throttle body permitted.
Maximum carburetor size for all power adder
entries is a single 4500-style or a Pro-Systems
Throttle control must be operated by the driver’s
VP Racing Fuels Gasoline, M1, Q16, C-85, E-85,
C12, 16, 23, 25, 45, or NO2 are the only fuels
permitted. Event Tech Director reserves the right
to inspect fuel at any time during competition
Failure to pass Fuel Check is grounds for
disallowance of the run during competition and
disqualification from the event during
eliminations. Fuel is checked using various means.
Samples given to Fuel Check Technical Inspectors
are compared to data taken from known fuel samples
provided by VP, adjusted for temperature, and
within a tolerance determined by Event Tech
Director. Failure occurs when the sample readings
fall outside those tolerances.
CLUTCH, FLWHEEL & FLYWHEEL SHIELD
Flywheel and clutch meeting SFI Spec 1.2, 1.3,
1.4, or 1.5 is mandatory. Clutches are limited to
a dual disc maximum. Flywheel shield meeting SFI
Spec 6.2 or 6.3 is mandatory. Clutch must be
manually operated by the driver’s foot.
Electronics, pneumatics, hydraulics, or any other
device may in no way affect the clutch system. The
throw-out bearing must release all fingers,
levers, stages, etc. simultaneously. Staged or
variable release clutches are prohibited.
OEM or aftermarket transmissions with a maximum of
5 forward speeds permitted on N/A combinations
only. Clutchless models permitted. Any gear change
must occur from direct action by the driver.
Pneumatic, electric, hydraulic, etc. shifters
prohibited. Torque converter not permitted with
this type of transmission. Manual transmissions
must utilize SFI approved bell housing.
Any OEM or aftermarket automatic transmission is
permitted. Lock-up style transmission and/or
torque convertors are prohibited unless OEM
equipped (i.e. A.O.D.). The use of
transmission-to-engine adaptors is permitted. The
use of trans-brakes is permitted. Pneumatic,
electric, hydraulic, etc. shifters permitted. .
Any American production type steering system
Aftermarket stock-type shocks/struts permitted.
Rear coil-over shocks are permitted.
Factory type front suspension only. Coil over
shocks are allowed. Aftermarket replacement
control arms are allowed. Aftermarket
K-Members/Commercially available sub-Frames
allowed. (Must have prior approval from tech)
Strut towers must be in factory location with
factory sheet metal attaching factory frame rail
to top of strut tower, can be notched, windowed,
or trimmed for header clearance but must maintain
factory sheet-metal attachment.
Stock-type, ladder bar, and racing 4-link rear
suspension systems are permitted.
The use of wheelie bars is prohibited.
All vehicles must have a chassis that meets the
guidelines set by SFI for their respective speed
and elapsed time. A valid NHRA serialized sticker
is mandatory at an NHRA Member Track.
Stock frame required from the forward edge
(closest to the bumper) of shock/strut tower to
the back of the rear wheel tub. Back-halved cars
are prohibited. Front and rear sub frames may be
joined together. Horizontal and vertical notching
of rear frame rail is permitted for tire/rear end
Entries must retain stock wheelbase dimensions of
+ or – 1 inch. Maximum wheelbase variation from
left to right is 1 inch.
A minimum of 3 inches from the front of the
vehicle to 12 inches behind front spindle
centerline is mandatory. A minimum of 2 inches for
the rest of the vehicle is mandatory (except for
oil pan and exhaust headers).
TIRES & WHEELS: 5
POWER ADDER LEGAL TIRES:
MT 3559 275/60-15 ET Street R
MT 3553 255/60-15 ET Street R or 26 x 8.5 -
MT 3453 275/60-15 ET Street S/S – DEDUCT -100lbs
N/A LEGAL TIRES:
MT 3559 275/60-15 ET Street R – DEDUCT – 25lbs
MT 3453 275/60-15 ET Street S/S – DEDUCT -150lbs
MT 3754X 275/60-15 ET PRO 275
Aftermarket racing wheels permitted.
Interior must maintain a factory upholstered
appearance. OEM dash board is required and can be
made of fiberglass or carbon fiber. Any
aftermarket racing style seat is permitted.
Driver’s seat must be located in the stock
location. Passenger seat is not required. Door
panels are required. Floor and transmission tunnel
where visible must be carpeted or upholstered.
Aftermarket steering columns and steering wheels
PEDALS & PEDAL LOCATION
Stock type pedals/linkage is required.
Body must retain original appearances and profiles
for year being used. OEM body shell must be
intact. Light weight body panels are restricted to
hood, fenders, bumpers, doors and
deck-lid/truck-lid or hatch. Composite roof panels
are permitted on 2005 and newer vehicles. Hood and
deck-lid/trunk-lid must be hinged or lift off
style. All front ends must be of factory
dimensions and cannot be lengthened. Alterations
or aerodynamic modifications are prohibited. Body
must be finished or painted.
The use of aftermarket forward facing hood scoops
is prohibited on power adder combos. The use of
cowl induction style hoods are allowed on any
vehicle with a maximum height of halfway point of
windshield. Factory OEM forward facing hood or
factory OEM ram air hood with scoops is permitted.
Forward facing hood scoop on N/A combinations
OEM cowl is required and modifications are
Grille must maintain a ‘’professional appearance’’
for year, make and model being claimed.
Stock, factory firewall is required. Notching and
smoothing of firewall is permitted but must be
identifiable as being in the factory location.
Factory OEM fiberglass firewalls (Corvette) are
permitted to replace the factory firewall with a
minimum of .024 thick steel located in the factory
RADIATOR CORE SUPPORT
Radiator core support is not required.
FENDER SPLASH PANS
Fender splash pans may be altered.
WINDSHIELD & WINDOWS
OEM glass or NHRA approved Lexan is required.
Complete stock floor in stock location is
required. Flat area of floor-pan starting at
“kickup” for rear end (behind rear seat area) and
rearward may be replaced with a minimum of
.024-inch thick steel or .032-inch aluminum. All
entries are allowed a removable trans-tunnel.
Aftermarket style mini-tubs are permitted.
All entries are permitted to use rear
wing/spoilers. Wing/spoilers are allowed a maximum
length of 26 inches. Any adjustments to the
wing/spoiler during a run are prohibited.
All entries must have operational headlights/fog
lights and taillights.
All cars in competition must be painted or
wrapped. Advertising graphics are permitted on the
body. In order to be eligible for the Ultra Street
Shootout points championship program, all
sponsors’ decals must be easily visible and
located on the outside of the vehicle. Failure to
do so can result in the driver forfeiting all
claimed championship points for that particular
event. The Ultra Street Shootout points
championship program requires that all entries run
the following decals:
1. Championship Windshield Banner: Decal needs to
be located on the top of the windshield or just
above the windshield located on the body.
2. Championship Series License Plate: Plate must
be located on the front of the vehicle
3. Class Sponsor(s): Decal must be located on the
passenger’s side lower portion of the windshield.
4. Class & Competition Numbers: Numbers must be
easily visible/legible and located on the front,
back, and both side windows.
Battery may be relocated and must be an automotive
Any battery-operated ignition system permitted.
Distributorless ignition systems are limited to
one coil per cylinder only. Optical devices and
magneto ignitions are prohibited.
A master cutoff switch is mandatory on all
vehicles with a battery located in the trunk.
Aftermarket starters, in stock location permitted.
SUPPORT GROUPS: 9
BRACKET RACING AIDS
The use of any bracket racings aids such as
optical sensors, delay boxes, shutter boxes,
throttle stops, etc. are prohibited. The use of
any device (electrical or mechanical) that allows
a driver to ascertain the position of their
vehicle to the starting line is prohibited.
All pressurized bottles must meet D.O.T. 1800lb
The use of tow vehicles is permitted.
ALSO: EVENT / RACE INFORMATION