SAFETY: All NHRA and Track safety rules apply for car and driver, including the use of an oil retention device or engine diaper.

BODY: The car must retain its original appearance, profiles, and dimensions. Factory roof and quarter panels must be used. Aftermarket fiberglass/and or carbon fiber replacement panels are limited to hood, front fenders, doors, decklids, and bumpers only. All front ends must be of factory dimensions and cannot be stretched. Aftermarket wings and spoilers are permitted. Complete stock appearing front and rear bumpers are required. A hood must cover the entire induction system. Transmission tunnel may be removable and must be metal. Forward facing hood scoops/ turbo or supercharger inlets are permitted.

INTERIOR: Factory appearing dashboard, door panels, and driver seat is required. Full Carpet is required on floorboards including transmission tunnel. Factory floor pan on driver and passenger side required. Bare inside frame of car cannot be exposed. Aftermarket steering column is permitted.

WINDSHIELD/WINDOWS:OEM glass or lexan windows are permitted.

CHASSIS: Complete stock chassis and frame rails must be retained from motor plate/shock tower to behind the rear wheel opening. Back-halved cars are not permitted. Front core support may be modified or removed. Aftermarket bolt-on replacement front K-members/sub frames are allowed (if front shocks bolt to K-member then they must be in factory location). Mini tubs are allowed. Rear frame rails may be notched for clearance and must be in factory location. Factory wheelbase must be maintained.

ENGINE: Maximum displacement for all engines is 588ci. Small blocks are allowed any deck height but must retain stock bore spacing. GM Big Blocks are limited to a 10.2 deck height. Ford Big Blocks are limited to a 10.3 deck height. Mopar Big Blocks are limited to a 10.7 deck height.

TURBOCHARGERS: Single turbocharger limited to 88 mm maximum. (GT55-88, Pro-Mod 88, ET-R88, Comp, Bullseye or = mid/large frame turbo). Turbocharger size will be verified by measuring the housing bore at the leading edge of the impeller wheel and must maintain the contour of the compressor housing. Inducer dimensions will not exceed 3.462 inches and exducer dimensions will not exceed 4.765 inches on Mid- Frame turbos. Inducer dimensions will not exceed 3.462 inches and exducer dimensions will not exceed 5.56 inches on Large Frame turbos. The maximum diameter of the housing bore at the leading edge of the wheel may not exceed 2 mm more than the maximum allowable turbocharger size permitted on Large-Frame 85/88 with surge slots/holes must have a cover over the slots/holes that stands off by no more than 0.250 inches. Inserts or reducers to achieve inlet or outlet dimensions prohibited. Any type of air to air or water to air intercooler permitted. Turbochargers w/nitrous oxide are prohibited except on 2-rotor, 4 cylinder, and inline 6 cylinder engines.

SUPERCHARGERS: Cog or gear driven superchargers are permitted, must meet all factory inlet, outlet, and internal housing dimensions. Inserts or reducers to achieve inlet or outlet dimensions prohibited. Supercharger cannot be combined with nitrous oxide. Roots superchargers are limited to a 10-71. Centrifugal superchargers are permitted. Screw superchargers are not permitted.

NITROUS OXIDE: Small block is permitted to run any type multi-stage nitrous systems. Big blocks are limited to a single stage nitrous - A single stage fogger (2 nitrous solenoids and 2 fuel solenoids) are permitted or if using a single plate then your limited to (1 fuel solenoid & 1 nitrous solenoid), and 1 purge solenoid.  Purge must exit engine compartment.  EFI Big blocks will be allowed 2 nitrous solenoids for dry nitrous system and will only have 1 line per nozzle/per cylinder.  (Using both sides of the fogger nozzle on a dry EFI NOS BB combo prohibited)

TRANSMISSION: Any factory style automatic transmission allowed. OEM factory style manual transmission allowed.  Bruno-Lenco transmissions are prohibited. Aftermarket clutchless manual transmission and clutch assisted manual transmissions are permitted on naturally aspirated combinations only. Electric shifters or air shifters are permitted.

INDUCTION: Small Block combinations may run any type induction. Big Block combinations are limited to a dedicated single opening cast intake with a single carburetor or a single 4150 or 4500 series throttle body.  (4 blade, dual blade or single blade throttle body permitted)

OILING SYSTEM: Dry sumps are permitted on all cars.

EXHAUST: Mufflers or inserts are required on all cars except for turbo cars. Exhaust may exit underneath car or out the front fenders but must not affect timing or staging beams.

FUEL: Gasoline only is permitted. Alcohol permitted on roots supercharged applications. Alcohol  or E-85 or other derivatives is prohibited on all other combinations.

STREET  EQUIPMENT: Functional headlights, taillights and brake lights required. All headlights, brake lights, etc must be on car and not removed for any reason. All vehicles may be towed back from their passes.

SUSPENSION: Stock style suspension cars only (See weights below for penalty for aftermarket suspension).Aftermarket 4- links are prohibited on all cars. Aftermarket direct replacement components such as: front control arms, rear control arms, front coil over shocks, and rear coil over shocks are permitted. Aftermarket rack and pinion steering allowed. Rear leaf springs, springs, shocks, and coil-overs may be moved to accommodate tire clearance, and do not need to be mounted in stock location. Bolt-on or welded sub-frame connectors, rear sway bars, are permitted on all cars. Wheelie bars are prohibited on all cars. Torque arms are only permitted on cars that were originally equipped from factory with it. Upper and Lower control arms must be mounted in the factory chassis locations -S Box permitted

TIRES: All cars with power adder must compete on a Drag Radial type tire with the following sidewall designation: 275/60/15. Naturally aspirated cars are permitted to run a 28.0" x 10.5" slick, no "W" tires permitted.

Minimum base Weights:All minimum weights include the driver.

Naturally Aspirated (small block) - 2,500 lbs.

Naturally Aspirated (Big Block) - 2,800 lbs. 

Nitrous (small block) 2,900 lbs

Nitrous (big block with standard deck height and conventional head)  - 3,250 lbs.

Nitrous (big block with tall deck height and conventional head) - 3,350 lbs. 

Single YSI / F1A/6-71 Supercharger (small block) - 3,000 lbs.

Single F1C/8-71 Supercharger (small block) - 3,100 lbs.

Single F1R /Novi 2500/ Xi/10-71 Supercharger (small block) - 3,300 lbs.

Single F1X Supercharger (small block) 3375lbs (we will continue to monitor this combination and make adjustments if necessary) 

Single 76mm T6 Turbocharger (Mid Frame) (small block)  - 2,900 lbs.

Single 80mm T6 Turbocharger (Mid Frame) (small block) -  3,000 lbs.

Single 85mm T6 Turbocharger (Mid Frame) (small block) - 3,050 lbs

Single 88mm T6 Turbocharger (Y2K or GT47-88) (Mid Frame) (small block) - 3,100 lbs.

Single 85mm T6 Turbocharger (Pro Mod 85) (Mid Frame) (Small Block) - 3150 lbs

Single 88mm T6 Turbocharger (GT55-88, Pro Mod 88 or =) (small block) - 3,250 lbs.

Single 88mm T6 Turbocharger (Large Frame 85*) (Small Block) - 3,250 lbs.

Single 88mm T6 Turbocharger (Large Frame 88*) (Small Block) - 3,350 lbs.

* Large Frame Turbo with billet wheel: add 50 lbs 

* Small Blocks with single stage nitrous system: deduct 50 lbs.

*Small Blocks (NOS & N/A) with single 4150 Series Carb/throttle body - deduct 50lbs.

* Small Blocks (NOS & N/A) with 23 degree Chevy heads, 20 degree Ford heads, and 18 degree Mopar heads:     deduct 100 lbs..

* Small Block (NOS only) Cast Tunnel Ram/Sheet Metal/2 Carburetors or Throttle Bodies - Add 50 lbs. 

* Non-Intercooled boosted cars -  deduct 50 lbs.

*Belt Driven Centrifugal Superchargers - Deduct 50 lbs. 

*Billet Heads Permitted, Billet Blocks not Permitted. 

* Aftermarket rear suspension (Ladder bar): add 50 lbs.(does not apply to NOS Small Blocks/BOP or N/A     Combos)

* Buick/Olds/Pontiac Nitrous combos will be 3,150 lbs. and not exceed 588 cu. In.

* V-6 Turbocharged/Supercharged/Nitrous combos will deduct 150 lbs. from base weight

 

Rules Subject To Change

MUST MEET ALL NHRA RULES INCLUDING LICENSE AND CERTIFICATION

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Ultra Street 

FORMAT: 1/8 Mile, Heads Up, .400 Pro Tree, All Run Field, Sportsman Ladder,

lane choice goes to higher qualifier first round, and then the faster car from previous round.

BODY: Fiberglass/Carbon body panels are limited to hood, rear deck lid, fenders,
doors, and bumpers. Cowl hoods may not be taller than half way point of the
windshield. Forward facing scoops are prohibited on power adder combos unless
factory installed or less than 5 inches from flat area of hood. Inlets for
turbochargers and superchargers must not be exposed to ram air. Race car
lettering limited to windows to maintain street type appearance.

INTERIOR: Aftermarket steering columns are allowed. Factory type dash accepted. Must have
carpet.

ELECTRICAL:Optical devices are prohibited. All entries must have operational head lights
and tail lights.

ENGINE: Aftermarket blocks and cylinder heads are allowed. All entries must utilize a
single carburetor cast intake manifold. Motor plates and solid mounts are
allowed. Engine must be in stock location. Mufflers are required on all
vehicles (except turbocharged combos). All SB power adder engines are limited
to 440 cubic inches. SB N/A up to 480 cubic inch permitted with added 7 lbs.
per cubic inch over 470 and BB N/A limited to 632 and BOP/BB Mopar power adder
limited to 588. 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 discrepancies arise.

INDUCTION: Small blocks and BB N/A combinations may use a single cast intake manifold with
minimal welding limited to the carb pad for single carb or EFI. Small Block N/A
may use cast tunnel ram/sheetmetal/dual carbs w/weight penalty (See*below) Mod
motor permitted aftermarket ram or billet intake w/ additional weight.
(See*below)

POWER ADDERS: Nitrous limited to SB and BOP/Mopar BB entries - Progressive nitrous
controllers are allowed. Entries must utilize a single stage nitrous plate with
one nitrous, one fuel and one redundant purge solenoid. Cross bar or perimeter
style plate not permitted on BB Mopar entry. BB Mopar permitted single stage,
single bar plate. Foggers must be disconnected and all solenoids must be capped
off. Nitrous plates using fogger nozzles are not allowed.

Turbocharged (mid frame turbo only) and supercharged entries are limited to
stock valve angle SB combos only. (SB CHEVY 23 DEGREE - SB FORD 20 DEGREE - 18
DEGREE MOPAR - FACTORY HEADED SMALL BLOCK FORD MOD MOTOR - LS CHEVY 15 DEGREE)

** NOTE: SB Chevy 23 degree Raised Runner - SB Ford 20 degree (SR20 -FT1 or
T1RI or equivalent) not permitted with boosted combo


TRANSMISSION: Any OEM style automatic or OEM manual transmission is allowed with power adder.
Clutch assisted/clutchless manual transmission allowed on N/A. Manual transmissions
must utilize SFI approved bell housing.


REAR SUSPENSION: Stock type rear suspension or ladder bar only. Coil over shocks are allowed.
Anti-roll allowed. Aftermarket replacement control arms are allowed. Stock
frame rails must be in factory location, notching permitted. Corvette permitted
any type of transverse leaf spring rear suspension. Wheelie bars are prohibited
on all cars. Late model GTO permitted torque arm or ladder bar w/ additonal
weight (see below)


FRONT SUSPENSION: Factory type front suspension only. Coil over shocks are allowed. Aftermarket
replacement control arms are allowed. Aftermarket K-Members/Sub-Frames allowed.


WHEELS/TIRES: A maximum of a 28 x 10.5 non W slick (N/A small block only), 28 x 12.50 ET
Street or any 275 radial may be used on N/A, power adders limited to a
P275/60-15 Mickey Thompson Tire P/N 3754R radial tire. Wheel width is limited
to 12"


NITROUS WEIGHTS:

AMC - 3100

Base weight includes BOP combos - 3200

Mopar BB conventional B1 head - 3300

All heads 14.9 and under - 3250

Any canted valve head - 3250

All heads 15 degrees and above carry no additional weight

Any non-raised runner 23 degree combo - 3000

Any raised runner 23 degree combo - 3150

Blue Thunder Cylinder Heads - 3250

C3/C302B/C302/Yates style -3100

Any 20 degree ford - 3000

Any 20 degree high port SR20 -FT1 or T1RI or equivalent - 3150

TFS-R ford - 3050


SUPERCHARGER WEIGHTS:

F1A-3150

F1C - 3200

YSI - 3200


TURBO WEIGHTS:

T-76 - 3150

T-80 - 3200


N/A WEIGHTS:

N/A Inline head - 2650

N/A Non-Inline head - 2750

N/A (big block with standard deck height and conventional head) 2950 lbs

N/A (big block with tall deck height and conventional head) 3000 lbs

N/A (big block with standard height and big chief head) 3050 lbs

N/A (big block with tall deck height and big chief head) 3100 lbs over 589 add
100lbs



GENERAL:

No Billet cylinder heads/blocks

No Billet wheels on 80mm turbo combo (add 50lbs for 76 w/billet wheel)

No Reducers on turbo or supercharged combo

Alcohol/E85 legal (meth injection legal on non-intercooled combo only)

All turbochargers (mid frame only) and superchargers must be as manufactured
from factory (GT55-80 or = with cast wheel add 50 lbs)

No muffler required on turbo entry, required on all other combos

No bull horns - front exit exhaust permitted but must not effect timing equipment

Gear driven supercharger allowed

Belt driven supercharger deduct 50 lbs

Boosted LS 15* add 50 lbs

Non Intercooled boosted combos deduct 50 lbs (no deduct if on Alcohol for fuel)

Leaf springs deduct 100lbs on N/A deduct 50 on P/A

*Late model GTO permitted ladder bar or torque arm add 50 lbs

*Cast Tunnel Ram/Sheetmetal/Dual Carbs on SB N/A add 50 lbs

* Ram style or billet intake on mod motor permitted add 50 lbs

Single 4150 carb/throttle body deduct 50lbs (N/A or NOS only)

N/A may deduct 100 lbs if using M/T 3754R tire

V6 entries deduct 200lb


Accepted Products

Accepted products deadline for Ultra Street/X275 Motorsports: Requests from
manufacturers to have new products considered for addition to the 2013 season
should be submitted before December 1, 2012 for the 2013 season. After this
date, Ultra Street/X275 Motorsports will consider manufacturer requests for new
products for the 2014 season.

 Rules Subject To Change

MUST MEET ALL NHRA RULES INCLUDING LICENSE AND CERTIFICATION 

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    Open Comp

                                                            

1/4 Mile, Index Dial-In Staggered Tree, .500 Pro Tree, 64 Car Field

                                               Altered Roadsters and Door Cars only 8.50 - 11.99

Bracket racing Aids-delay boxes, cross over boxes or any" reaction-time related" devises are prohibited. Throttle stops of any type are prohibited. 2-steps and trans-brakes are permitted. Electronic /air shifters permitted.

Tires must be slicks or drag radials

Qualifying based on reaction time, 2 ROUNDS OF QUALIFING ONLY

Indexes are computed by taking your quickest pass and subtracting .10 from it. That becomes your dial in for the rest of the race

 Double entries are prohibited

Rules Subject To Change

MUST MEET ALL NHRA RULES INCLUDING LICENSE AND CERTIFICATION

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   Wild Street

1/4 Mile, Dial-In E.T. Race, .500 Full Tree, All Run Field

 

Tires: Must be street legal DOT, Drag Radial or E.T. streets.

ALL cars must have mufflers - inserts are NOT considered mufflers

Footbrake launches only - No leaving with the aid of a transbrake, linelock or rev limiter during eliminations.

 Double entries are  prohibited

Rules Subject To Change

MUST MEET ALL NHRA RULES INCLUDING LICENSE AND CERTIFICATION