USST
2006 Technical Rules
USST is an oval track and road course traveling series designed around full
race trucks that resemble the Chevy Silverado, Ford F150, or Dodge Ram.
Trucks running under USST specifications must meet specifications in this
document. USST core rule set is
based on the 2002 PRO SuperTruck ruleset.
USST competitors will follow each
tracks safety rules and each track will allow USST’s technical rules to govern
USST competitors. USST will perform
technical inspections at each race. USST will adjust rules
over time based on testing and performance.
Updates, information, schedules, and news are available
at the RACINXS (Racing In Excess) website www.RACINXS.com.
USST can be contacted at 405 787 8888 or ecaudell@racinxs.com.
USST mail is received at RACINXS, Inc. 3706 Edmond Rd NE, Piedmont, OK
73078.
These rules are formatted for viewing on the website. Please go to the
download page for a Microsoft Word file.
Tires for 2006: We believe we have enough GoodYear D1132, 1347, and
1348 tires to last the 2006
season. A replacement will be
determined as the supply is being exhausted. The top tire priorities are
safety, cost, and equal competition.
Tire Treating for 2006: Tire treating will be allowed for the 2006
season to help the supply of tires last the season. This will also keep
the tires more consistent as the supply is aging.
USST Rules have remained largely unchanged but will be refined over
time. Chassis measurements have been specified. Other Rules have
been refined.
Changes for 2006:
The
5 inch rear spoiler rule is now mandatory for 2006.
2006
rules strike the tire treating rule 30.2.
The
Non-USST trucks section has been modified. See 33.
NON USST TRUCK CLASSES.
All
2005 Changes listed below are still in effect for 2006.
Changes for 2005:
16.12
Engine crankshaft height 11" minimum.
23.3
Must have a functional catch can installed minimum 1 quart capacity.
Catch can will be sealed unit with vent. Catch can must vent on
right side base of windshield in a visible area outside of body.
18.16
NASCAR Style fabricated Centerlink, Idler Arm, pitman arm, tie rod adjusters,
and intermediate shafts of SCP, RHE, or other professional manufacturers
allowed. Must use inner tie rod ends.
20.12
Trucks seen overflowing fuel will be sent to pits for fuel removal and moved to
the back of the starting line up.
22.22
For 2005, USST is allowing the USLMA
legal motor with 390 carb and maximum gear rule as set by USST. Gear Rule is
subject to change at any time under USST's discretion. Gear Rule at Altus and
Tulsa is 6.50 but is
subject to change. Transmission must be in high gear for all oval track
racing and qualifying laps. Gear Rule at Hallett is 5.00. 390 carb
must pass inspection with standard guages and measure to factory
specifications. Holley is the only approved manufacturer.
1.
COMPETITION DIRECTOR
Each
USST event will have a designated Competition Director to make decisions related
to that event. The competition
director’s decision will stand for the event but can be protested by following
USST’s protesting rules. Any race
team requiring communication to race track management will do so through the
competition director.
2.
TECHNICAL INSPECTORS
In
the event USST technical inspectors are not present at a race, three race teams
will be randomly selected to provide a technical inspector or oversee protest.
A fourth and fifth team (alternate) will be selected to stand in for any
teams involved in the inspections or protest.
Each team will provide the name of a team member that will participate in
the inspections.
USST
will designate an inspection area where drivers will take their trucks directly
after the feature.
3.
PRIZE MONEY
Most
USST racetracks are mailing pay directly to racers. Make sure your address is on file with each track unless
otherwise instructed by USST or the racetrack management.
USST is not responsible for filing of any documentation related to teams
racing income or expenses.
4.
PROTEST
4.1
Protest Fees are as follows: Remove Intake $200, Remove one head $400.
Once the level of protest has been established, all items that can be
inspected without further dismantling with tools are subject to inspection.
All items that can be inspected are subject to inspection.
Inspection tools such as scopes, mics, cc tools,and magnets may be used.
4.2
Refusal of Protest will result in loss of points and money for the night.
Drivers or Owners refusing protest will fined $100 and be required to
post a $200 bond at one or more of the subsequent events.
4.3
Protest must be registered with USST official within 10 minutes of the end of
the feature race.
4.4
Protesting of official decisions must be submitted to USST in writing along with
a $100 protest fee. A Protest
Committee will review the written protest and make a decision.
4.5
Removal of Cylinder Head protest can be avoided without penalty by having your
USST engine inspected and sealed prior to assembly. Inspection seals must
be in place, not tampered with, and inspection record must be on file with
USST. Inspection fee of $50 will apply.
5.
USST FEES
5.1
USST teams are required to pay $60 a year management fee to cover trade show
booths, expenses, phone bills, website, mailouts, etc.
Teams are not eligible for USST contingency awards, USST points, USST
product specials, or USST Sponsor monies until management fee is paid.
5.2
Checks to USST should be made out to RACINXS, INC and have
“USST” and their purpose denoted in the memo field.
5.3
If fee is not paid prior to April 1st, the USST Management Fee will be deducted
from race pay out.
6.
TRUCK NUMBER SELECTION
6.1
Truck Numbers are selected by USST members based on the order the 2003 USST
membership fees are received at USST.
7.
USST POINTS
To
Be Determined Each Season.
SECTIONS
8-13 (unavailable at this time)
14.
SPECS. BODY
14.1
Any 1996 or newer Chevrolet, GMC, Ford, or Dodge 1/2-ton, full-sized,
conventional cab pickup truck.
14.2
No extended cab, step side, El Camino, or Ranchero body styles allowed.
14.3
Aftermarket bodies from approved manufacturers must be used. Approval must be
obtained from USST to consider any other after-market body, nose, or tail.
USST welcome contingency sponsor manufacturers into the approved
manufacturers list.
14.4
Current approved manufacturers are:
Speedway
One Racing Bodies
Five
Star Bodies
ARP
Race Bodies (no extended cab allowed)
RU
CarCrafter Bodies
14.5
Body Mounting, roof heights, tail heights and nose heights should follow the
manufacturers published diagrams with a 57" roof height. Sides of
body should not be mounted lower than frame to achieve proper heights.
Minimum roof heights for asphalt racing are based on a 4" frame
height. Allowances to the published diagrams based on this frame height
are allowed. For Example: The Five Star online specifications show a
57" roof height, 10 inches from leading edge of roof with a 5" frame
height. USST min frame height is 4", a 56" roof height is
acceptable.
15.
SPECS. APPEARANCE
15.1
Any and all measurements shall be as referenced to the manufacturers
measurements (See
Measurements.)
15.2
A full Lexan/Polycarbonate windshield is required the top 8" must be
painted black to simulate a visor. A rear window is required. Side wing windows
are allowed, but window opening must be 20" minimum.
Visor section of windshield will be used for USST drivers home state name
and USST title sponsor.
15.3
The maximum bumper thickness is .250 inches. No factory bumpers will be allowed.
Bumpers must be hidden behind nose and tail piece. Bumper ends must be capped or
rounded to prevent unnecessary excessive damage.
15.4
Nerf bars are allowed on sides of truck only, but must be inside body.
2006
rules rewrite this rule: 15.5
Spoiler can be mounted only on rear deck. Maximum spoiler measurement
from mounting point to top edge is 7 inches. Maximum spoiler width is 65
inches. Spoilers over 5 inches tall
recommended to have clear lexan above 4 inches for 2003, mandatory for
2004. The 2 inches of the outer edges of spoiler may be supported with
metal to top of spoiler. Spoiler may only have a two dimensional
profile. No flaring allowed. Spoiler rule is under review and will
likely match the Mid Am rule of 5 inches for 2005.
15.5
Spoiler can be mounted only on rear deck. Maximum spoiler measurement
from mounting point to top edge is 7 inches. Maximum spoiler widt
15.6
Spoilers may have one bend only used for mounting to deck. No wicker bills.
15.7
No lateral and no vertical spoilers allowed.
15.8
Front air dam allowed minimum height 3 inches.
15.9
No holes allowed in tail gate.
15.10
All damage to bodies shall be repaired by the next event or obtain approval from
a USST official.
15.11
There must be the realistic appearance of headlights, taillights, and signal
lights in their original locations. This may be accomplished by either paint or
decals.
15.12
Tires must be centered in wheel opening.
15.13
Floor pan will extend the full width of cab with no gaps and minimal drain holes
only. Floor pan on passenger side can only be as high as center tunnel (maximum
of 10 inches tall) measured from driver's floor pan.
15.14
Full front and rear firewalls are mandatory and must extend the full width of
the truck with no holes or gaps.
15.15
Maximum angle of front firewall is 65 degrees.
16.
SPECS. CHASSIS
16.1
Any full perimeter coil spring frame is approved for use. All frames must
utilize OEM lower A frames of equal lengths.
16.2
Wheel base measurement is a minimum of 112 inches and a maximum of 114 inches.
16.3
Track width 65" max.
16.4
No leaf springs allowed.
16.5
No offset or underslung chassis
allowed.
16.6
If used, the stock stub frame may be lightened or shortened to achieve proper
wheel base measurement; however, frame must remain stock production to the front
of rear kick up.
16.7
Fabricated front and rear clip must be minimum .095 wall thickness 2x3 inch
steel tube but must maintain large type coil suspension.
16.8
Frame must extend to rear of truck body.
16.9
Fabricated frames must use 3"x4" .095 wall tubing
minimum, on main frame rails. Minimum Frame Rail Length is 51 inches.
16.10
Main frame rails may be no wider than 65" measured outside
to outside.
Main Frame rails may be no narrower that 50" measured inside to inside.
16.11
Engine, transmission and rear axle must be centered in frame. Tolerance of
1/4" in either direction.
16.12
Engine crankshaft height 11" minimum.
16.13
Minimum Frame height 4 inches.
17.
SPECS. ROLL CAGE
17.1
Minimum roll cage must be 10 points of 1-3/4 inches X .095 inches.
17.2
Minimum of four horizontal door bars on right and left side with two vertical bars between
each horizontal bar. Lower horizontal bar or second horizontal must be attached to
frame in two places with 1 3/4 .095 tubing. "X-ing" is not a
substitution for any door bars.
17.3
Cage halo must be near the roof line so driver has ease of entry
and exit. Minimum Halo Height is 47.5 inches to bottom of Main Frame
Rail To accommodate body mounting and driver access. Halo minimum outside width is
40 inches.
17.4
The only exposed roll cage bars will be the support bars from halo to rear
frame.
17.5
Must have a minimum of 4 bars from cage to rear of frame; 2 bars from the top of
halo and 2 bars from the middle area to frame.
Note: Additional Specifications have been added to better define Roll
Cage
17.6
Upper Halo Minimum width should measure at least 40 inches at narrowest
point. Maximum Halo Width 53 inches. USST approved bodies will accommodate a 53 inch halo
width.
17.7
Minimum halo length from front of roll bar to front or halo is 29.25
inches.
17.8.
Main Cage Left Front Down Tube to Right Front Down tube measured inside to inside (for
ease of measuring) is a minimum 50 inches.
17.9
Minimum door bar width from left to right is 65.5 inches. Maximum door bar
width is 70 inches to allow approved USST bodies. Door bars may not extend
outside any of the 4 wheels. Right Side Door Bar must extend at least 2.75
inches outside of right main frame rail.
17.10
Minimum Cage Height to Bottom of main frame rails is 47.5 inches.
17.11
Rear Roll Bar to Front Cage Down Tube 41 inches minimum and 42 maximum
as measured on frame rail (center to center of round tubing).
17.12
Top Drivers Door Bar to Bottom of Frame Rail Minimum is 26.75
18.
SPECS. SUSPENSION
18.1
No rack and pinion steering allowed. No Strut Rod type suspension. Front steer chassis only must be in stock
location. OEM style steering boxes only.
18.2
Front lower A-arms must be equal length OEM style. No fabricated lower A frames.
No Eccentrics on lower aframe mounting points. Lower mounting points must
be equal distance from chassis centerline. Eccentrics on pre-2001 chassis must
be welded with a minimum 1/2 inch weld.
18.3
Upper A-arms can be tubular non-adjustable. Mounting bracket may be moved from
stock location. Aluminum cross shafts OK.
18.4
Front springs must be equal distance from centerline of frame.
18.5
On a stock frame, rear springs must be in stock location. Rear springs may be
located inside or outside on tubular built rear clips but must be stock type
located equal distance from frame centerline.
18.6
Minimum spring diameter is 4.5 inches.
18.7
Only one shock allowed per wheel. No
External Reservoir shocks. No
Externally adjustable shocks.
18.8
No coil-overs or coil over eliminators allowed.
18.9
Weight-jackers (bolt-type only) on all four corners may be used.
18.10
Steering quickeners are allowed.
18.11
Only two-wheel rear drive allowed.
18.12
Any cast or forged steel spindle may be used. Brake brackets can be welded or bolted to
spindle but are subject to USST inspection.
No tubular spindles allowed. No aluminum spindles.
18.13
Adjustable ball joints may be used.
18.14
Outer tie rod ends may be replaced with spherical rod ends. Tie rod sleeves and
swaged tubes must
be steel. Minimum tube ID is 5/8 inch.
18.15
Unless specified here all other steering components must be OEM.
18.16
NASCAR Style fabricated Centerlink, Idler Arm, pitman arm, tie rod adjusters,
and intermediate shafts of SCP, RHE, or other professional manufacturers
allowed. Must use inner tie rod ends.
19.
SPECS. BRAKES/HUBS
Aftermarket hubs, rotor hats, rotors and calipers are OK within the
following parameters.
19.1
Only four-wheel brakes allowed and must be functional; no floaters allowed.
19.2
Rear disc may be used.
19.3
Caliper must be a stock replacement caliper.
Caliper pistons only allowed on one side
of caliper.
Aluminum
caliper OK. One Caliper and rotor per wheel are
allowed. Rotors must be 12
inches or less outer diameter, no more than 1.25
inches thick, and no less than .750 thick. No
Aluminum or Carbon fiber rotors. No
cooling holes in the rotor face. Curved
vein rotors OK. Aluminum rotor hats
and hubs are allowed.
19.4
No Carbon fiber calipers. No
aluminum or titanium fasteners. No
Wide-5 lug pattern hubs allowed.
No Aluminum studs.
19.5
No aluminum disc brakes allowed.
19.6
No grinding or lightening of brake components is allowed.
19.7
Maximum of two 3" cooling ducts to each caliper or one 4" duct to each
caliper.
19.8
One rotor and one caliper per wheel.
19.9
Brake cooling fans are allowed.
20.
SPECS. FUEL & FUEL CELL
20.1
ATL is the preferred Fuel Cell manufacturer.
USST basic fuel cell rules are the following: 22 Gallons maximum size.
Roll over valve or flapper valve required in vent.
Mounting brackets materials must be a minimum of steel 14 guage 1 inch
square tubing or 2 inch wide steel strap 1/8 inch thick.
Two brackets must encircle the fuel cell on the front bottom, back, and
top.
A. The
preferred Fuel Cell construction is the Bladder type manufactured by companies
like ATL or Fuel Safe. Bladder
Type Fuel Cells are legal in USST as purchased from the manufacturer when
mounted following the USST mounting recommendations.
These cells must be mounted with the factory supplied safety can or equivalent
subject to inspection (normally 22 guage steel).
B.
The acceptable alternative is to use a non bladder type fuel cells like
the ones manufactured by RCI or JAZ. These
fuel cells must be mounted following the USST mounting recommendations,
protected by a safety can, AND additional 12 guage or 1/8 inch shielding must
be added to the sides and rear of the safety can.
This additional shielding can be incorporated into mounting strap or
frame as long as all thicknesses are 1/8th inch minimum.
20.2
Fuel cell may not be lower than 8.5".
Lowest part of Fuel Cell, not brackets, will be measured when checking
minimum fuel cell height.
20.3
Cell must be mounted in a steel canister securely fastened to frame behind rear
axle.
20.4
Fuel cell must be centered in frame.
20.5
Minimum thickness of .024 gauge sheet steel will be required for fuel cell
canister. The only holes allowed will be four drain holes 1/2 inch maximum in diameter.
20.6
NO PERFORATED STRAPS. A minimum of two 2-inch steel straps must secure top and
bottom of fuel cell canister.
20.7
Gasoline is the only fuel allowed.
20.8
No additives of any type may be added to fuel allowed.
20.9
Only 1 gasoline filter may be used between the fuel cell and the fuel pump. No
Glass or plastic filters allowed. The location and size of the filter must be
acceptable to USST officials.
20.10
Icing or cooling of fuel system will not be permitted in the pit or racing
areas. Pressure systems will not be permitted. Any concealed pressure type
containers, feed lines, or actuating mechanisms will not be permitted, even if
inoperable. Icing, freon type chemicals or refrigerant may not be used in or
near the fuel system.
20.11
AN type fittings required on all fuel lines.
Steel Braided hose recommended.
20.12
Trucks seen overflowing fuel will be sent to pits for fuel removal and moved to
the back of the starting line up.
21.
SPECS. WEIGHT
21.1
Minimum weight of 3000 lbs with driver.
21.2
USST officials have the right to weigh trucks at any time.
21.2
All trucks will be weighed before the main event, and are subject to weighing
before qualifying, dashes, and heats.
21.3
Maximum left side weight 58% with driver.
21.4
Dry sump oil system, add 50 lbs for 3050 minimum.
21.5
USST racers are subject to track fines for losing lead ballast.
22.
SPECS. ENGINES
22.1
Engine and body not required to match, Chevy in Ford or Dodge OK.
22.2
No six cylinder engines allowed.
22.3
All engines will be a maximum of 9.5 to 1 compression ratio.
USST can determine which cylinder to check.
USST inspectors will perform or oversee the compression checking process
to verify tools are used properly and crankshaft/piston are positioned TDC.
To
calculate compression ratio
Compression
ratio =3D V1+V2+V3+V4 / V2+V3+V4
V1=3D
calculating swept volume (bore x bore x stroke x .7854)
V2=3D
deck height volume (bore x bore x .7854 x deck height)
V3=3D
gasket volume (bore x bore x .7854 x gasket thickness)
V4=3D
combustion chamber volume in cubic inches ( 1cc =3D.061c.i.)
example:
76cc x .061=3D4.636c.i.
Note:
be sure to allow for valve reliefs and subtract dome size when computing
effective chamber size. To make 9.5 to 1 most 355ci engines require 87cc of
total combustion chamber volume, this includes: deck, valve reliefs, gasket and
cylinder head chamber.
22.4
Maximum displacement, including wear and clearance, is: 365 cubic inches.
Blueprinting of engine components allowed per factory specifications. (Formula:
Bore x Bore x .07854 x Stroke x 8 Cylinders =3D Total Cubic Inch Displacement.)
22.5
OEM cast iron blocks only.
22.6
Pistons may not extend above deck height, flat top or dish only.
22.7
Steel connecting rods only. No titanium or aluminum rods.
22.9
Harmonic balancer must be bolted to the crank.
22.10
Camshaft and lifters must be of a flat tappet design only. Roller camshaft,
lifters, mushroom camshaft, or mushroom lifters will not be allowed. Lifters
must match block i.e. no ford lifters in chevy block. Lifters must rotate
individually, no rounded nose lifters.
22.11
Timing chains will be OEM type only. Double roller chain and gears will be
allowed. No gear drives allowed. No belt drives.
22.12
Any cast iron cylinder head. No porting, grinding, or polishing of any type;
in any location. Chevy must be a 23-degree head. Heads may be surfaced.
Heads must remain in stock location. No moving or offsetting of dowels in block
or heads. Pocket under valves may be opened up with cutters only up to a maximum
of 80 degrees. No removing of exhaust lip on lower floor of exhaust port. Roller
rockers, guide plates, and stud girdles are optional. Heads must match block
manufacturer. (Examples: Any approved GM heads on any approved GM block, etc. No
big block heads on small blocks or vice-versa. No Ford on GM, etc.)
1st generation Ford 351N head allowed.
Ford 352 head Not allowed. Check
with USST for other variations and legal casting numbers.
22.13
Mechanical fuel pump in stock location. No
belt-driven fuel pumps allowed. No electric fuel pumps.
22.14
No titanium parts allowed except valve spring retainers.
22.15
No aluminum oil pans allowed. Wet or dry sump systems allowed. Dry sump tank
must be located behind drivers compartment.
22.16
Intake manifold: No hand-built fabricated sheet metal or aluminum intake
manifold will be allowed. Intake manifold may not be any taller than seven
inches at center of carburetor pad including any gaskets and spacers. Intake may
not be altered to achieve height. Intake may be port matched, but grinding may
not exceed over 1" into the manifold port.
22.17
USST Carburetor is 600 cfm. Holley
4776 or 80540 are the only approved carburetors.
Carburetor will be checked using a GO-NO-GO gauge. Carburetor bore,
throttle plate bore, throttle shaft diameter, and booster size will be checked
using a GO-NO-GO gauge. Measurements will be of factory specifications. Choke
plate may be removed. Choke horn may be removed. Throttle shafts may not be
modified. End of screw may be cut to shaft. Two throttle return springs
mandatory. Air cleaner required but may not protrude through hood. Coolers must
be located in front of front firewall.
Gauge
sizes used on Holley Carbs.
4776
~ 80540
Primary
venturi size 1.253 ~ 1.253
Secondary
Venturi size 1.316 ~ 1.253
Primary
& Secondary Throttle Bore 1.563 ~1.563
Thickness
of throttle shaft & plates .1890 ~ .1890
Booster
O.D. .613 ~ .613
Booster
Length .706 ~ .706
22.18
Headers may be used. Exhaust shall extend past the driver's compartment and
shall not exit out right side of truck or out side panels.
22.19
Mufflers are mandatory and shall not be altered from the original manufacturer's
specifications. A maximum 95 decibel (dB) reading shall not be exceeded.
22.20
Engine setback is determined from the centerline of the rear axle to the rear of
engine measured at ride height. 91 inches is the minimum measurement. Centerline
of engine must be of equal distance from left and right frame rails. No
tolerance allowed.
22.21
USST will employ a compression checking devices for motors not carrying the PRO
series seal. USST reserves the
right to choose which cylinder to check and to determine where true TDC exists.
22.22
For 2005, USST is allowing the USLMA
legal motor with 390 carb and maximum gear rule as set by USST. Gear Rule is
subject to change at any time under USST's discretion. Gear Rule at Altus and
Tulsa is 6.50 but is
subject to change. Transmission must be in high gear for all oval track
racing and qualifying laps. Gear Rule at Hallett is 4.56. 390 carb
must pass inspection with standard guages and measure to factory
specifications. Holley is the only approved manufacturer.
23.
SPECS. RADIATOR
23.1
Aluminum or brass radiators allowed.
23.2
No plastic radiators or side tanks allowed.
23.3
Must have a functional catch can installed minimum 1 quart capacity.
Catch can will be sealed unit with vent. Catch can must vent on
right side base of windshield in a visible area outside of body.
23.4
No water-type trickle system allowed.
23.5
A fan shroud is required and must cover half the blade width and completely (360
degrees) encircle the fan blades.
23.6
No antifreeze, ethylene glycol, or similar coolants allowed.
Water Wetter type products are allowed are allowed.
24.
SPECS. IGNITION SYSTEM
24.1
No magnetos allowed.
24.2
No crank trigger ignition allowed.
25.
SPECS. TRANSMISSION
25.1
Standard production transmissions which are cataloged and available through
regular dealer channels. Richmond, Borg Warner, Ford, Saginaw and Muncie brands
are OK. Any other transmission must be approved by a USST official. No
aftermarket clutchless or internal clutch transmissions allowed, specifically: Bert, Brinn, Falcon,
Lane, ErnieGlide etc.
25.2
Must have working forward and reverse gears; in addition to a neutral position
and must be able to be shifted by the driver when fully strapped in.
25.3
Maximum four forward gears.
25.4
Transmission coolers allowed.
25.5
Transmission must be centered in frame.
26.
SPECS. CLUTCH/BELLHOUSING
26.1
Single, double, or triple disc clutch may be used. Clutch & Flywheel must
attach to crankshaft in conventional manner and rotate with crankshaft at all
times.
26.2
No cones or couplers allowed on standard transmissions.
26.3
No drilling of flywheel for the purpose of decreasing the weight.
26.4
Reverse mount starter/bellhousing may NOT be used. No accessories may be driven off the front of the
transmission (example: oil pump, power steering, ect.).
26.5
If OEM type clutch is used, then an explosion proof bellhousing is required.
If explosion-proof bell housing is not used, a scatter shield, not less
than 1/4-inch thick, must be installed over flywheel and bellhousing area.
“Clutch-flywheel flexible housing safety shield" is approved for
use. The shield shall completely cover any part of the housing exposed to the
driver. On all bell housings, an inspection hole must be provided for easy
accessibility and inspection.
26.6
Minimum clutch diameter is 7 ¼ inches.
26.7
Automatic Transmissions MUST be vented into a catch with a minimum 1 quart
capacity. Catch can must be empty
before each race. Press in vent
tube should be tapped and a pipe fitting to attach catch can hose.
Direct Drive PowerGlide (Bushore, TCI) with crank coupler okay.
26.8
If a Non SFI flexplate is used on an automatic then a Flexplate shield is
required.
27.
SPECS. DRIVE SHAFT
27.1
Drive shaft must be stock type steel only and must be painted white and have
truck number on it.
27.2
No aluminum or carbon fiber drive shaft allowed.
27.3
Only two u-joints allowed.
27.4
Two loops are mandatory; one front and one rear.
27.5
Minimum driveshaft tube diameter 3 inches.
28.
SPECS. REAR AXLE
28.1
Any stock passenger car, 1/2-ton truck, or quick-change rear end allowed.
28.2
Rear end units may be locked.
28.3
Mini or full spools or welded rear ends are allowed.
28.4
No limited slip units, aluminum axle tubes, or cambered rear ends allowed.
28.5
Rear suspension may be 3 or 4-link type.
28.6
All control arms must run forward of rear axle to frame
28.7
Maximum length of control arms is 30 ½ inches from center to center of rod
ends.
Minimum length of control arms is 29 ½ inches center to center of rod
ends.
28.8
Rear end control arms may be aluminum.
28.9
No torque absorbers allowed.
28.10
Panhard bar or J bar only allowed. No watts linkages allowed.
28.11
Rear track width 65" max.
28.12
Floater rear-ends optional.
28.13
Wheel bolt pattern cannot be larger than 5-on-5".
28.14
Gun Drilled axles okay for vehicles over 3000 lbs.
29.
SPECS. WHEELS
29.1
Any 10-inch steel wheel allowed.
29.2
Only four-inch offset wheels allowed.
29.3
No bleed-off valves allowed.
29.4
No bead locks allowed.
29.5
Wheel weights must be fastened by clips, glue, and
tape.
29.6
Wheels may not protrude outside fender wells.
29.7
No wide-five wheels.
29.8
All wheels must have at least five 1-inch nuts.
29.9
15x8 wheels will be allowed for some visiting truck classes but not recommended
and are subject to inspection. IMCA
sticker wheels will not be rejected when used as manufactured.
29.10
USST officials have the right to reject any wheel based on safety.
30.
SPECS. TIRES
30.1
The mandatory tire will be determined by USST.
The 2005 tire is the Goodyear Hooters Cup asphalt scuff
available from USST only at $30 each. Tires
transported to racetracks are sold at $35 to cover handling.
All tires must be marked and cataloged by USST.
If a driver is found to be using tires that have NOT been marked, they
run the risk of being disqualified with a loss of points and prize money based
on USST official’s decision.
2006
rules strike this rule: 30.2
Tire Treating is prohibited. Tests
will be made to insure NO unauthorized treatment or tampering of tire is being
done. Tire treatment of any kind and/or possession of such chemicals on property
is strictly prohibited. USST competitors agree to allow a maximum of 2 feature
race tires of USST choice to be confiscated for testing for treatment.
Tires will either be returned to team or destroyed after testing.
Wheels will be returned if the tires cannot be easily dismounted at time
of confiscation.
31.
SAFETY GUIDELINES
31.1
All seats shall be high back.
31.2
The driver's seat must be securely fastened to the roll bars by four 5/16 grade
8 type bolts with fender washers on both sides of the aluminum seat and nylock
nuts or lock washers.
31.3
Seat belts and shoulder harnesses of five point variety must be used and must be
bolted with 1/2 grade 8 or better bolts to the roll cage structure only; NOT to
the floor pan. Lap belts and shoulder harnesses are to be 3 inches in width and
replaced every four years beginning with belts dated 1996. A date tag or stamp
is required. Upper end of the shoulder harnesses must be securely fastened to
metal supports at a point level to the driver's shoulders.
31.4
Driver side window net is mandatory.
31.5
The following safety equipment is mandatory for drivers and must be free of
excessive wear;
31.5a
Fire suit.
31.5b
Full coverage helmet (meeting 1995 Snell standards). Snell 2000 will be required in 2005.
31.5c
Fire retardant gloves.
31.5d
Fire retardant shoes.
31.5e
Neck Braces are required at some racing facilities and are recommended by
USST. Drivers must possess a neck
brace to use at the tracks requiring them. Contact Stroud Safety for custom
neckbraces.
31.6
For the protection of the driver's feet, a boxed-in area with proper bars or
similar protection is highly recommended.
31.7
Ballast weight must be securely bolted in place and must be approved by a USST
official. Minimum one 1/2" bolt per 25lbs. All weights must be painted
white and have truck number on them.
31.8
An onboard fire extinguisher is mandatory. It must be a minimum of 2.5 lb.,
securely fastened within easy reach of driver.
31.9
Each pit area must have a dry chemical fire extinguisher in good working order.
31.10
Positively no sharp ends or edges on bumpers, nerf bars, fenders or wheels.
31.11
Ignition switch must be clearly marked on/off.
31.12
If any truck does not meet acceptable safety guidelines, it will not be
permitted to enter competition until compliance is met.
31.13
The battery must be securely mounted in a steel frame behind the driver's
compartment. The battery must be
located between the trucks frame rails or the exposed sides must be covered by a
steel not less than 20 guage thick.
31.14
All trucks must have loops on the front and rear for easy hook up by a wrecker.
Loops may be no taller then 8 inches above bumper and no wider than the frame.
Loops must be under hood or rear deck.
32.
RADIOS
32.1
Two way voice communication radios, independent of car’s electrical system
will be permitted and are recommended.
32.2
An
area will be reserved in the Pit grandstand for one crew chief or crew member
with radio communications to his/her driver during ALL "A" and
"B" Main events. Team
uniforms bearing the truck number are recommended to allow spotters to relay
messages concerning safety issues.
32.3
Trucks without radio communications are required to display a 12 inch tall
‘X’ on the left rear tail to warn other competitors that they do not have a
spotter.
33.
NON USST TRUCK CLASSES
Visiting Trucks from other
series are encouraged to race with USST. The
following sections are summary information and rule variations for USST events.
You may not mix and match rule sets to create a "hybrid" truck. These rule sets evolve over time to foster competitiveness.
Contact USST if you have any questions. USST is motivated to get new teams
to try racing with our series so we are lenient with first time
teams. If you have a non-USST truck that deviates from these rules,
contact us to discuss options for clearance.
A.
Mid American Super Trucks:
Mid-Am Trucks may race at USST events.
Mid-Am
truck chassis are legal for long term racing in USST with the following
adjustments:
Equal length rear trailing arms greater than 30 inches.
USST Engine Rules.
USST Tires.
8" wheels or 4" offset 10" wheels.
No underslung chassis.
3000 lbs with driver before race.
B.
CNS Late Model Trucks
Contact
USST to discuss running a CNS truck in a USST race.
C.
Legacy ARTS Truck Classes:
An
ARTS Chassis truck has won a USST race. USST is enthusiastic about the
many ARTS chassis trucks being able to run competitively with USST. For
2006, the following rules apply:
First 2006 Oklahoma Race for a Certified ARTS chassis -
Run watcha brung, just bring it!
Subsequent races and the long term approach is as follows:
If ARTS or USRA rules with 305 Engine - Any Carb, any tire, 2750 lbs. Call
for status on other modifications
If USST Engine Rules - 3000 lbs with driver before race.
Nine Inch, QC, or GM rear end 3 link or 4 link.
7 1/4 minimum clutch or any automatic transmission.
8" or 10" wheels with USST tires.
Engine Setback for
a full frame 108 inch wheelbase truck can be set at 91 inches from back of
block to Rear End CenterLine.
D.
Craftsman Trucks:
NASCAR
Craftsman Truck chassis are legal in USST. USST motor rules are
required. USLMA motor is allowed at Oklahoma tracks for 2005 with 390 carb
and gear rule. As of the 2003 season, Craftsman trucks will be allowed to
compete in select USST races at a weight of 3200lbs with driver at maximum of
58% left. Craftsman Truck 9.5 wide
wheels or USST 4 off wheels are allowed. USST
shock rule applies. Contact USST
for more details. Engine setback is allowed. USST body rules my be
utilized.
F.
I-70
Trucks:
USST
has worked to determine the equalization factors to include I-70
trucks in USST but a lack of participation has made this difficult. USST welcomes I-70 trucks. Please email USST before the
race to discuss details. Either the 2002 I-70 motor rule or the GM crate motor
(with aluminum head) combinations are legal. Carb Rule is as follows: I-70 trucks use I70 350 2bbl carb
on tracks 1/2 mile and larger. I-70 trucks may use a 390 Holley or 500
2bbl on tracks smaller than 1/2 mile. No new tires
allowed at track for practice, qualifying, or racing. Only D1132 Scuffs or
approved USST tires allowed.
Weight
is 3000 lbs with driver after race plus these cumulative adjustments.
Unequal
length lower A frames: Add 50 lbs.
Offset
Chassis: Add 50 lbs.
Front
track Greater than 65 inches but Less than 67 inches: Add 25 lbs.
Front
track Greater than or equal to 67 inches: Add 50 lbs.
Wide
Five Hubs: Add 25 lbs.