PERRIS AUTO SPEEDWAY
Sport Mod's will run on the Half Mile Track.
1. SAFETY EQUIPMENT:
Rules apply at all times car is on track. Roll bar padding required in
driver compartment (Fire retardant recommended). SFI-approved full fire
suit required. Gloves required. Recommended: Fire retardant head sock and
underwear; head and neck restraints; collapsible steering shaft.
Driver-side window net required, minimum 16 inch by 20 inch ribbon or mesh
style, and must be mounted so latch is at top front of window. Minimum
three inch wide SFI-approved five point safety belt assembly required. No
older than 3 years. Must be mounted securely to roll cage. Kill switch
required within easy reach of driver and must be clearly marked ‘OFF’
2. FRAME: 1964 or newer
OEM perimeter American rear-wheel drive passenger car frame only. No
sports car frames. Frame must be full and complete, cannot be widened or
narrowed, and must be able to support roll cage on both sides, exceptions
are: weight jack in original center line of spring tower allowed; frame
may be cut a maximum 36 inches forward from center of rear end housing;
horns may be removed in front of steering box; front cross member may be
notched and boxed for radiator and/or steering clearance; maximum seven
inch wide opening in side of spring tower for spring removal. Maximum two
inch wide by four inch tall frame stiffener may be welded directly to
outside of left side frame rail. Minimum wheelbase 108 inches, maximum 112
inches, both sides. Maximum overall width shall not exceed 78 inches from
outside of tire to outside of tire. No part of frame can be lower than
four inches from ground except front cross member.
3. ROLL CAGE: Must
consist of continuous hoops, minimum 1.75 inch O.D. tubing, with minimum
wall thickness of 0.095 inch for main cage, frame-mounted in at least six
places, low carbon or mild steel recommended. Must consist of a
configuration of front, rear and top hoops connected by tubing on sides or
side hoops. Driver’s head must not protrude outside cage with helmet on.
Roll cage must be securely supported and braced with minimum one cross bar
in top halo. Foot protection bar required. Main cage no further forward
than rear of engine. All bars forward of cage must be lower than hood.
4. DOOR BARS: All driver
side door bars and uprights must be minimum 1.5 inch O.D. with 0.083 inch
wall thickness. Minimum three driver side door bars, parallel to ground
and perpendicular to driver, and welded to front and rear of roll cage.
Passenger side must have at least one cross door bar, horizontal or
angled, minimum 1.25 inch O.D. with 0.083 inch wall thickness, and one top
door bar, minimum 1.5 inch O.D. with 0.083 inch wall thickness. Steel door
plate, 18 gauge or 0.049 inch minimum thickness, must be securely welded
to outside of driver side door bars and cover area from top door bar to
bottom door bar and from rear hoop down-post to five inches in front of
seat. Must be visible for inspection.
5. BODY: (See diagram) No
composite body panels allowed except roof rock guard hood scoop and
spoiler. Body must be same width, front to rear, and parallel to OEM
frame. Minimum ground clearance is four inches. Engine compartment must
remain open (no side panels). Hood must be enclosed at rear. No panel in
front of right door to engine compartment. No inner panels. Must have
front windshield and rear window support posts. Driver and passenger side
windows must have at least 12 inch opening (height and width), measured at
center of window, between lowest point at top of window, whether roof or
roll cage, and highest point at bottom of window, whether interior or
body. May use Lexan in sail panels. May use full windshield. Must be
fiberglass full size roof, rounded down in all directions. Maximum 1.5
inch rolled down rock guard allowed on roof front. Rear spoilers ok, No
wider than the body, max height 8 inches. Maximum four inch plastic
skirting allowed on bottom of doors and quarters. No reflective doors or
quarter panels. Outside of tires must be widest part of car.
6. DRIVER COMPARTMENT: Must have minimum three windshield bars in front of driver. Lexan or aluminum cowl panel in front of driver can be no wider than cockpit and no farther back than steering wheel. Minimum 0.125 inch aluminum, or 0.060 inch steel, complete floor pan required. Aluminum high-back seat only and must be bolted in, using minimum 0.375-inch bolts, next to left side frame rail and ahead of rear tires. Bottom of seat can be no lower than bottom of frame rail. Driver must be sealed off from track, driveline, engine, fuel cell, canisters and pumps. Oil coolers must not protrude above interior. Accumulators cannot be mounted between driver and left-side door bars. No driver-adjustable devices allowed while car is in competition except brake adjuster. No mirrors of any kind.
7. FRONT SUSPENSION: All
components must be steel, unaltered OEM, in OEM location, and replaceable
by OEM parts, exceptions are: tube-type upper A-frames with or without
aluminum or steel cross shaft, and mounts can be moved; stamped steel OEM
replacement lower A-frames; rubber, nylon or steel lower A-frame bushings,
no offset or bearing type; welded or bolted shock mount on lower A-frame.
Lower A-frames must be right and left, and of same design. Lower A-frame
mounts and bolt holes on frame must be in OEM location. OEM ball joints
only. Sway bar must be unaltered OEM.
8. STEERING: No rack and
pinion. All components must be steel, unaltered OEM, in OEM location,
exceptions are: outer tie rod end and adjustment sleeve may be replaced by
a minimum 0.625 inch steel rod end and steel tube; spindles can be ground
for brake caliper clearance only; unaltered, OEM replacement Pinto
spindles with bolt on spindle savers allowed; steel steering shafts and
knuckles only; driver compartment steering may be modified, must be kept
on left side. Spindles must be right and left, and of same design. Quick
release required – steering quickener and steering wheel may be
aluminum. Idler arm, pitman arm, and center link must match frame.
9. SHOCKS: One steel,
nonadjustable, non rebuild able sealed unaltered shock per wheel. No
bumpers or stops. No threaded body, front coil-over, air, or remote
reservoir shocks. No Schrader or bladder type valve allowed. Front half
may be shielded.
10. SPRINGS: One steel,
non-progressive coil spring per wheel only. Steel multi leaf spring
allowed. Any coil spring must be at least 4.5 inches O.D. No torsion bars,
air bags or inner liners.
11. REAR SUSPENSION: All
components must be steel. All mounts and brackets must be welded or bolted
solid. Coil springs must remain vertical. Coil-over eliminators or steel
spring sliders allowed. Nothing may be mounted on lower control arms. Must
utilize one of the following designs:
(A) Aftermarket three link
design requirements: Must use minimum 16 inch lower control arms equal
length left to right. 1/2inch tolerance. Straight lower arms only, no
swing arm type links. Lower arm angles must be within 5 degrees of each
other. Lower arm mounts must be center of the axle tube.
Must use one upper
control arm (pull bar) with biscuit (Maximum 3 biscuits 2 ¼ inch in
diameter) located at top center of rear end housing (1-inch tolerance)
Must use minimum 23 inch pan hard bar located behind rear end housing.
(B) Multi-leaf spring design
requirements: Must use steel multi-leaf springs with no additional
suspension components besides one shock per wheel and pull bar with
biscuit (Maximum 3 biscuits 2 ¼ inch in diameter) located at top center
of rear end housing (1-inch tolerance). Adjustable aluminum lowering
(C) OEM stock design
requirements: Rear cross member, control arm mounts and bolt holes on
frame must be in stock location. All components must be unaltered,
approved OEM, and match frame. Control arms cannot be altered in any way.
Steel, rubber or nylon control arm bushings only. Springs must remain in
stock location. Lower spring perch must be welded to rear-end housing.
Must use steel upper weight jack.
12. REAR END: Any steel
approved OEM passenger car or truck rear end (housing and carrier)
allowed. Safety hubs (floater) allowed. All components must be steel,
except lowering blocks, axle cap, and drive flange. Inspection hole
required in housing. Full steel spool, steel mini spool or welded rear
ends only. Steel axles only. No quick change devices, or cambered rear
ends. One piece drive flange only. No torque dividing differentials. No
scalloped ring gears.
13. BUMPERS: (See
diagram) Steel bumpers must be on front and rear at all times and welded,
or mounted with minimum .375 inch bolts. Rear bumper must be constructed
of solid square, or minimum 1.25 inch O.D. tubing with 0.095 wall
thickness, and – similar to diagram – no wider than five inches
outside of rear frame rails. If wider than five inches outside rear frame
rails, must be capped and bent forward 90 degrees, or constructed in a
loop design. Must have at least one upright, minimum 1.25 inch with 0.065
wall thickness, from bumper to fuel cell guard. Two-bar front bumper must
be minimum 1.25 inch O.D. tubing with minimum 0.065 wall thickness
(maximum 0.095 inch) mounted frame-end to frame-end, no wider than width
of material outside frame horns and with bottom loop parallel to ground.
Top bar must be directly above bottom bar, minimum 6.5 inches apart,
measured center to center.
14. TIRES/WHEELS: Must
use unaltered Hoosier Race tire, G60-15 or American Racer. No softening,
conditioning, siping or grooving of tires. No re-caps. Aluminum or steel
spacers only. Max wheel size 8 inches, steel only. Bead lock, on right
rear only. External, steel bead lock only and it cannot make wheel any
narrower than 8 inches and no wider than 8.75 inches. Must use only steel
15. BRAKES: Must be steel approved OEM, operative four wheels, drum or disc. Must maintain minimum OEM dimensions for hubs/rotors and calipers, cannot be lightened. Bolt pattern may be changed. Larger studs allowed. Rear rotors may be aftermarket 0.81 inch thickness (new). No floating rear caliper mounts. Vented rotors only, no scalloped or ceramic coated rotors. No brake shut-off or pressure sensitive devices. One front to rear proportioning device allowed. Brake lines must be visible.
16. EXHAUST: Round tube
headers only. All primary header tubes must enter directly into one
collector at same point at end of header. All exhaust must go through
mufflers, two per car, and one per header. No merge collectors. No exhaust
17. FUEL SYSTEM:
Mechanical push rod type fuel pump mounted in stock location only. Racing
fuel cell required, maximum 32 gallon capacity, must be in minimum 20
gauge steel container. Cell must be securely mounted behind rear axle,
between rear tires, minimum of four inches ahead of bumper, minimum of ten
inches above ground. Must mount with minimum two solid steel straps around
entire cell, two inches wide and 0.125 inch thick. All cell mounts must be
steel, securely welded to frame/cage. Protective tubing must cover rear
and extend past both sides of cell. No part of cell shall be lower than
protective tubing. Fuel cell vents, including cap vent, must have check
valves. If fuel cell does not have aircraft style positive seal filler
neck/cap system – a flapper, spring or ball type filler rollover valve
is required. Pick-up must be on top or right side of cell. Limit of one
fuel filter. No cool cans. Air cleaner top/stud cannot direct air into
carburetor. No top flow air cleaner housings. Holley #4412 or Aftermarket
500 CFM two barrel carburetor only. Must fit Holley 4412 go no-go tech
18. FUEL: Gasoline only.
Racing fuel allowed. Pump grade recommended. No performance enhancing or
scented additives. Fuel must pass both dielectric meter and chemical
tests. Fuel sample may be taken from any car at any time.
19. WEIGHT: Minimum
weight limit of 2,550 pounds, no tolerance, after race with driver in car.
Weights must not be used in driver compartment or outside body. All
weights must be securely mounted with at least two 0.5 inch bolts, painted
white with car number on it. No titanium, magnesium, stainless steel or
carbon fiber components. Solid steel fasteners only.
20. BATTERY/STARTER: One
12 volt battery only, must be securely mounted between frame rails, and
positive terminal must be covered. Car must have capability of starting
without being pushed or pulled. Car must leave initial staging area on
demand, unaided, or go to rear of that race. Starters must be mounted in
21. GAUGES/ELECTRONICS: No
unapproved cameras, transmitting or listening devices, timing retard
controls, or digital gauges (including tach). No electronic monitoring
computer devices capable of storing or transmitting information except
analog tach. No adjustable ignition control boxes. One 12 volt ignition
box allowed, must be out of driver’s reach. No additional ignition
accessories allowed. Only change allowed to ignition box is one high-end
rev-limiter setting. This setting can be changed through one chip only, or
an internal setting inside box. No magnetos. No electronic traction
Automatic: Must remain in OEM or
OEM replacement case, with a functioning OEM appearing pump. Aluminum OEM
bell housing may be replaced with aftermarket explosion-proof aluminum
bell housing. Original OEM bell housing must have approved scatter shield
constructed of minimum 0.125-inch by three-inch steel, 270 degrees around
flex plate. Manual: Must be unaltered, three or four speed, OEM production
case and have a working 7.25 inch minimum diameter, steel and/or aluminum,
single or multi-disc clutch and pressure plate bolted directly to
flywheel/flex plate. These components must rotate, consistent with engine
rpm, while car is in any gear. Must use explosion-proof steel bell housing
with one hole for throw out bearing lever or hose, must be 270 degrees
around top of clutch and flywheel/flex plate area. Hydraulic clutch pedal
allowed with manual transmission only.
Drive Shaft: Minimum two inch
diameter, white, steel drive shaft. Steel slip-yokes only. 360-degree
drive shaft loop required and must be constructed of at least 0.25 inch by
two inch steel, or one inch tubing, mounted six inches back from front
23. ENGINE COMPARTMENT: Rear
of engine (bell housing flange) must be mounted at least 72 inches forward
from centerline of rear axle. Engine offset must be kept within two inches
of centerline of front cross member with engine level. Minimum 11 inch
engine height from ground to center of crankshaft. Radiator must be
mounted in front of engine. Cooling system may be modified. Overflow tubes
must be directed to ground between frame rails.
24. ENGINE SPECIFICATIONS: Any
American make engine allowed. Chevrolet Max CI.350 +.060.Ford Max CI. 351
+ .060.Dodge Max CI. 360 + .060. All motors must obtain cubic inch from
stock stroke of motor being used. No stroked or destroked motors allowed.
Steel heads, block and oil pan only. OEM passenger vehicle production
block only. No GM Bowtie, Ford SVO or Chrysler W blocks. Flat tappet
cam/lifters and stud-mounted rocker arms only. No stud girdles. No
mushroom lifters, cannot alter lifter bores. OEM firing order cannot be
changed. No crank triggers. All engines must be able to be used in
conventional passenger car without alterations. Engine mounts cannot be
removed or altered. Castings and fittings must not be changed. No machine
work on outside of engine. All belt driven accessories must be on front of
engine. ‘Wet’ sump oiling system only.
The rules and/or regulations set forth herein
are designed for the orderly conduct of racing events and to establish
minimum acceptable requirements for such events. The rules shall govern
all entrants. NO EXPRESS OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM
PUBLICATION OF OR COMPLIANCE WITH THESE RULES AND/OR REGULATIONS. They are
intended as a guide for the conduct of the sport and are in no way a
guarantee against injury or death to a participant, spectator or official.
race director shall be empowered to permit deviations from any of the
specifications, herein, or impose any further restriction, that in his
opinion do not alter the minimum acceptable requirements. NO EXPRESSED OR
IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM SUCH ALTERATION OF
SPECIFICATIONS. Any interpretation or deviations of these rules is left to
the discretion of the officials. Their discretion is final. If
you have any questions please call the office at (951) 940-0134.
Participants must be a member of the Perris Auto Speedway PASSCAR
Association to receive Championship points. After two events you must join
PASSCAR to participate. There
will be a $40.00 entry fee per car per race. Money will be collected at
pill pick at the Pit Gate.