2010 PURE/STREET STOCK RULES
Make sure you read all safety and procedural rules, THEY DO APPLY TO YOU
These rules are posted here as conveyance only, Not
responsible for any type Os or other copying mistakes.
Call the track office at 607-657-8222 if you have any questions
This class is open to 1965 or newer American made
full frame cars. No high
performance cars, trucks, stationwagons, convertibles or front wheel drive cars.
Wheelbase must remain within 1" of stock for the make/year of car used.
Outside body must be complete, and resemble the factory original. Cars may use
aftermarket steel or aluminum replacement panels,
but each panel must retain its OEM
dimensions and style.
Sealed hood scoops allowed 3-Inch
maximum height but no cowl induction, air boxes or any system of forced air
Induction allowed. No part of air cleaner can be exposed above hood. All glass
must removed. Inside door panels, inner fenders, trunk floor, and OEM dash panel
may be removed. All doors must be welded shut. Roof panels must have factory
dimensions, mounted centered over rollcage. No half roofs and no roof spoilers.
Bodies must be fully mounted in a safe manner with no external or internal sharp
edges.
SEATS / INTERIOR:
Aluminum Seat Is mandatory, minimum .095" material. No fiberglass, bucket
seats, or factory original car seats. Seat must be mounted no further back than
32" from center of rear housing, measured from rearend to bottom of seat
back. Driver must be protected by a sealed front and rear firewall. Stock
firewalls may be replaced with 20 gauge steel or .080" aluminum. Rear window shelf must be
completely sealed across entire window base to rear firewall. Passenger's side
of cockpit must not come straight across to driver's shoulder area. It must drop
down before midpoint of cockpit. No sharp edges. Steering column must be
aftermarket, but must remain in original location. Aftermarket gas pedals
recommended must have toe lift loop. No cable operated throttles allowed. All
pedals must be in stock location in driver's compartment.
ROLLCAGE:
Complete six point cage with at least main cage a mandatory of 1.5 x 1/8"
wall tubing minimum, no black iron pipe. All junctions must be gusseted. Minimum
of one 1" vertical bar down center of windshield area with entire
windshield area covered with 1/2" square steel screen. All cages will be
centered on chassis, no LM offsets or severely setback cages. Right side of
main cage must be welded down to original frame rail even if an inboard straight
rail has been added inside the OEM frame. Cars with main hoop mounted to inboard
frame rail section must either add 150 pounds to the middle of the OEM right
side frame rail or add auxiliary uprights and X frame door bars up to the height
of the door and tie them into the main uprights. All cages must have a
minimum of 3 door bars on each side with 4 recommended on driver's side. When
only 3 are used on driver's side, there must be sufficient verticals tying them
together with gussets. Lowest bar cannot be lower than driver's hip area in seat
and top bar must come sufficiently high enough to protect driver's shoulder
area. OEM door pillars and rocker panels can be removed but must be replaced
with vertical bars tying door bars to main cage, and rockers must be replaced
with crush panels that seal off driver's compartment. Nerf bars are optional
between front and rear tires, but must be tight to door panel, with no sharp
edges, and have ends turned inward. Must be securely fastened in at least 2
places to cage and not just to body panels. Nerf bars allowed behind rear tires
tying into bumper ends, and must be fastened to frame inside rear fender. Same
procedure applies for front corner nerf bars. All nerf bar material must be a
maximum of 1.5" OD tubing or square stock. Rusted rear frame sections
may be replaced by tubular or square steel anywhere behind rear most suspension
mounting point to rear bumper area. No collapsible OEM bumper shocks. All
bumpers and bumper support bars must be securely bolted and or welded to frame.
All Uni-bodies cars must have sub-frame sections welded in place with both front
and rear clips remaining in stock locations and configuration, Including strut
cars. Bumpers must be securely mounted to frame, with ends enclosed or
protected, with a minimum of a loop bar in the center or heavy chain loop for
wrecker use. No cowcatcher types bumpers, or severely over built bumpers
allowed. Minimum of 1.5" diameter bumper support bar, not to exceed 4"
diameter tubing behind stock type bumpers or nose pieces. All interior rollbars
within reach of driver will be padded with rollbar padding. No pipe insulation.
Window net is mandatory. No old string type nets allowed. Driver must be able to
open window net while fastened in car.
SUSPENSION:
All suspension components must be stock and used in stock locations for
make of car. Aftermarket racing springs allowed but no coil over or coil springs sliders
/eliminators, torque arms, or other aftermarket racing suspension components.
Coil spring adjuster cups or solid spring cups allowed front and rear but no
jacking bolt systems. No method of suspension adjustment can be done from inside
or outside the car. Car must have to be jacked up for any adjustments to be
made, No drop spindles or aftermarket hubs, or tie rods etc. OEM only. Non stock or aftermarket ball joints allowed. A frames
OEM
stock. Upper A frames may be replaced with a steel shaft tubular A frame.
Aftermarket upper A frame mounts allowed in OEM location. Strut cars can run auxiliary shocks but must disable dampening of original strut
shock by drilling and draining fluid. No heim joints
used on control arms, tie rods or sway bars. Spindle saver bolt on braces
allowed on metric spindles. No Ford or Mopar suspension parts on GM vehicles.
No rear swaybars unless factory installed.
DRIVETRAIN:
Stock type rear ends only. May be from different size car No floater type axles in Ford rear ends. Welded or locked rears allowed.
Spools allowed, racing axles allowed but no ratchet type differentials, Gold Trac,
or any other aftermarket traction control devices allowed. Rear control arms
must be stock and mount in OEM locations, NO slotted holes in either rearend
or on frame. Drive shafts will be painted white and have a minimum of two steel
safety hoops near front and rear. No chains, bungee cords or tin strapping. No
aluminum drive shafts or half shafts allowed. 1" steel lug nuts mandatory on
all four corners with at least 1/2" studs, 5/8 recommended. All bolt on
lead or added weights must be brightly painted and have car number on it. All
cars must weigh a minimum of 3000 lbs
after racing with driver, no allowances made for water or fuel.
WHEELS AND
TIRES: 8' steel wheels any
offset. Aftermarket steel rims highly
recommended. Bead locks allowed on right rear only. No wide 5, aluminum or
magnesium wheels. DOT
stamped racing recap tire or American Racer 245/70 non DOT racing tire. Tread
width can not be more than 8 1/4". No tire softeners or treatments allowed.
No mud or snow tires. Grooving or siping is allowed. Minimum of 5 lug nuts per
wheel at all times.
BRAKES:
Must have operable and effective 4 wheel brakes. Dual master cylinder
allowed. Front to rear brake bias adjuster allowed, No remote dial adjusters
allowed inside driver's compartment, this means you are not allowed to adjust
the bias when racing. Right front brake shut off valve allowed, but all
right front brake components must be in place. Rear stock disc brakes
allowed, but must be OEM type systems, No aluminum rotors or aftermarket or dual
piston calipers. Steel brake lines only. No nylon line systems.
SHOCKS:
Steel bodied shocks only, must be Non-adjustable, one per corner, mounted
in stock location for type of car, but can have fabricated rear upper mounts
particularly on cars with rear frame sections replaced. Steel
bodied after market shocks with welded heim
joint
ends are allowed on the rear only but they must be mounted in stock location,
must be non-adjustable, Front
Shocks must be stock type and in stock location.
TRANSMISSION:
Stock automatic or Stock manual transmissions only, with all gears working, including reverse. Automatic
transmissions must have functional 11" torque convertor with no internal
modifications allowed. No hollow converters allowed or any method of creating
direct drive systems. Manual transmission must have full steel bell housing and
blanket, stock clutch, pressure plate, flywheel. Minimum weight on flywheel
is 25LBS. No aluminum parts whatsoever in clutch systems. No aftermarket
transmissions allowed. No corvette parts allowed.
ENGINE:
Engines must remain in stock location with no notching of crossmember for fuel
pump clearance. Aftermarket solid motor mounts allowed. Chevy Vortex
and Ford GT heads not allowed. Cast iron OEM stock production heads only. Any angle
valve job will be permitted as long as it is done on a machine that concentric
to the valve guide center. Any amount of valve seats per cylinder head will be
allowed to be installed for the purpose of repairing a head. No hand grinding,
sanding, blending, or de-burring where a cutter or stone leaves off. Sand
blasting, bead blasting, add dipping, porting, polishing, and welding are
prohibited. Stock type steel roller tip rockers allowed,
*stud girdles will be permitted and 1.5 or
1.6 roller rockers will be permitted. Car MUST weigh 3200lb. min. to use roller
rockers and stud girdles. No BBC rockers or valve train parts on SBC heads, No titanium or aluminum valve
train parts allowed. Maximum valve size: intake: 2.02",exhaust: 1.60".
Poly locks allowed. Screw in studs and guide plates allowed but must be OEM size and location.
No BBC studs in SBC heads. No relieving or
unshrounding of valves in combustion chamber. May run
double valve springs, Heads must be manufactured by manufacturer of engine
block. No aftermarket or bowtie blocks or heads. All factory casting numbers
must remain visible. No SVO Ford parts. No aluminum heads or Intakes, even If
they were OEM parts. Maximum displacement: GM: 350ci+.060", 4"bore x
3.480" stroke Ford: 351ci+.060", 4" bore x 3.5' stroke Chrysler:
360ci+ .060", 4" bore x 3.578" stroke Chrysler: 340ci+.060",
4.040" bore x 3.13" stroke Blocks may be decked, but piston must not
extend above deck at all. Wet sump oil pans only. no windage screens or modified
oiling systems. Stock OEM or oval track claimer style oil pans allowed.
1/2" pipe plug must be installed in oil pan for inspection purposes. No remotely
mounted oil
filters, Block mounts only, No gear drives or belt
drive cam systems, Timing chains only. Flat tappet cams only, No mushroom
lifters or lifters larger than OEM for motor.
PISTONS:
Flat top pistons only. No domed pistons of any kind. Aftermarket pistons allowed
as long as they are stock OEM type. Minimum 1/16"xl/16"x3/16"
rings only. No Metric rings or gas porting of pistons allowed. Must have at
least 2 valve pockets, but piston cannot be fly cut. Floating pistons allowed,
but no piston guided rod/pin configurations.
RODS: Aftermarket
I beam sportsman replacement rods allowed but rods can be no longer or lighter than stock OEM
for the motor being used. No Olds. rods In Chevrolet engines. Aftermarket
rod bolts allowed. No polishing, lightening, drilling, etc. No aluminum rods.
Balancing or bushed rods allowed. No
type of H beam rods allowed.
CRANKSHAFT:
Crankshafts of stock dimensions,
weight, and style, must weigh 50Lb. minimum. Balancing of rotating assembly allowed.
Stock stroke only for make/size of engine. No altering of stock stroke
crankshafts allowed.
HEADERS: Cast iron exhaust manifolds,
no center dump exhaust, headers are allowed 1 5/8 tube only. crossovers are
allowed, But no180º
headers are allowed, No exhaust can run thru driver's
compartment. All headers must exit underneath car with exhaust pipes exiting
past driver and end before rear tires with
no crankcase evacuation type systems. No two into one exhaust
or H pipe
connections in exhaust systems.
INTAKE: Stock
cast iron production 2 Bbl OEM intakes only. No marine, bowtie, TBI or other
industrial intake manifolds. No propane intakes allowed. No porting,
polishing, or any internal work, No shot blasting, acid etching, or other cover up work allowed. No plenum area work at all other than to mill carburetor
mounting surface to remove rust. A 1" tall fiber or aluminum carburetor
adapter may be used to adapt to Holly 2bbi carb. No tapered spacers, open
spacers, or any adapter modified to allow additional air below carb.
butterflies. Adapter hole walls must be straight and parallel to each other with
a max. diameter of 1.750" maximum combined height of adapter and gaskets
will be 1 1/8" measured from carb. plenum surface to carb. base plate,
IGNITION:
OEM style electronic ignition systems only. No aftermarket ignition systems such
as MSD, magneto,etc. No traction control, or timing altering devices allowed. No
digital tach. No crank trigger ignitions or multi coil systems.
COOLING SYSTEM:
No aluminum or electric water pumps. Pump mounted fans only, no electric fans.
No flex fans or aluminum fans. Any pulleys allowed. Any radiator but must remain
in stock location. No duct systems designed to direct air to intake/carb.
FUEL SYSTEMS:
Gasoline only. Maximum of 22 gal. fuel cell with foam and rollover valve
mandatory. All
fuel lines running thru driver's compartment must be steel braided with no pipe
fittings and routed in a safe manner away from exhaust header.. Fuel shut off
must be well marked and within driver's reach. Mechanical block mounted OEM
fuel pumps only.
CARBURETOR:
Limited to one stock 4412 Holley 2bbl
carburetor. Carburetors must have choke horn but all choke hardware can be
removed. Maximum throttle bore: 1 11/16” (1.687”).Max. venturi diameter:
1 3/8”All carburetors must pass all no-go gauge checks with body, base plate,
boosters, throttle shafts, etc all being unmodified and in stock location.
No polishing of any part of carburetor. No modifications to pick up
air from any source other than through top of carburetor, such as cut gaskets,
drilling, etc. Only the following changes
may be made to carburetors: jets, power valves, air bleeds, emulsion
bleeds, float, needle/seat, pump/cam, idle bypass holes in butterflies,
plugging/blocking of vacuum ports, welding linkage to shaft, installing shaft
bushings to correct for worn shaft, and boosters may be tightened for safety.