TO PURE STREET SERIES
(All vehicles must comply with
General Rules, except where exempted in this section)
A. ELIGIBLE MODELS
1. Must be American
made car, no station wagons, SUVs, or convertibles.
2. Minimum wheelbase of
1. Engine must be stock
for that make/model/year and be mounted in stock locations. Maximum
of 360 cubic inches displacement.
2. Measurement from
steering box adjustment bolt to No. 1 spark plug may not exceed 12.5
3. Heads must be stock
and retain stock size valves per manufacturer specifications. Valve
size and cc mus be correct for head number. Casting numbers of 993,
882, 441, 416, 450, 193, and 601 will be allowed. Any other casting
numbers must be approved by track tech personnel.
4. Approved carburetor
will be box stock Holley 500 CFM 4412 two-barrel with round hole.
Top and bottom of carburetor will be checked for 1 11/16 throttle
bore and 1 3/8 venturi. Carburetor spacer may not exceed one (1)
inch in thickness. Track reserves the right to confiscate feature
winner's carburetor and provide replacement.
5. No cold air boxes or
air induction devices will be allowed. Breathers may use top and
bottom covers only.
6. Any size flat tappet
camshaft allowed. Lifters must be specific to engine and
manufacturer. No roller cams will be permitted, but roller rockers
will be allowed in the interest of prolonging the life of the valve
7. Steel, stock length
rods will be required. I-beam or H-beam rods will be acceptable.
Rods may not be altered in any way. Two-valve relief cast pistons
will be allowed.
8. Intake manifold must
be stock cast iron "quadra-jet" four-barrel intake. Intake must have
EGR mounting plate.
9. Headers will be
permitted. Exhaust system must extend past driver. (See muffler and
noise requirement under General Rules).
10. Aftermarket radiator
will be allowed. Cars must have a minimum one gallon working
overflow can in engine compartment.
11. Battery must be
secured. Must be in covered box if located inside driver's
compartment. All cars must have master kill switch.
12. No 400 cubic inch
blocks will be allowed, regardless of total displacement.
13. Engine and all
components must be stock as left showroom floor except as allowed in
C. DRIVE TRAIN
1. Transmission must be
stock for vehicle's make, model, and year. May be three-speed,
four-speed, or automatic. Automatics must have working torque
converter. All cars must have working reverse gear.
2. Stock, steel
flywheel, stock clutch (10 1/2 inch minimum diameter), and stock
pressure plate only will be allowed. No aftermarket or
made-for-racing flywheels, clutches, or pressure plates will be
allowed. Aftermarket clutch pedal and throw-out bearing will be
3. Driveshafts must be
painted white and must have safety hoop. No aluminum driveshafts
will be allowed.
4. Ford rear end will
be allowed. No floater rear ends will be allowed.
1. All cars must have
working brakes on front and rear.
2. Aftermarket “single
cylinder” master cylinder and brake pedal are allowed. No adjustment
devices will be allowed on master cylinder or pedal.
3. Stock calipers will
be required front and rear.
4. Proportioning valve
will be permitted in brake line beside driver's seat.
1. Minimum weight will
be 3,200 pounds after race, with driver in car. Minimum weight will
be 3,000 pounds for full frame cars (stock chassis - no
F. CHASSIS, BODY, INTERIOR
1. Suspension must be
stock for that make/model/hear with no modifications, with the
exception of racing shocks, racing springs, and hide-away adjustable
spacers, which will be allowed. Shocks and springs must be in stock
location. Caster and/or camber may be adjusted. No weight jacks will
be allowed. Full frame cars (GM metric chassis) will be allowed to
use stock configured drop spindles. Aftermarket adjuster sleeves and
outer tie rods will be allowed. Sway bar must not exceed 1.25 inches
in diameter. SHOCK CLAIM RULE: Any driver participating in feature
race may claim shocks of any other competitor finishing in front of
them in feature race by posting claim fee of $60 per shock in cash
to competition director at scale immediate following feature race.
2. Bumpers must be
capped or rounded to prevent hooking other cars.
3. Cars must be stock.
Front and rear clips may be tied together for strength. Rear clips
may be underslung for strength. No holes will be permitted in hoods
except for pins. Body sheet metal must be kept in place at all
times. Stock front and rear firewalls and rear inner fender wells
must remain intact. Floor pan may be removed on passenger side of
car if driver's compartment is isolated.
4. Hood and trunk must
be pinned closed. Trunk area must be completely enclosed. All doors
must be bolted or welded shut. Door glass openings must remain open
to stock size on both sides. Hood scoops must not create cold air
induction to breather.
5. All glass, trim, and
upholstery must be removed.
6. Full roll cage is
required. Driver protection bars are required. Aluminum
made-for-racing seat is required. Seat must be securely mounted to
the roll cage. Four-point racing harness with lap and shoulder
straps properly secured is required. Window net is required.
7. Minimum frame height
will be 3 inches measured from ground to lowest point on frame.
8. Front of rear leaf
springs must be mounted in stock locations with factory front spring
mounts. Shackles may be used to adjust cross weight, but no slider
blocks will be permitted.
G. WHEELS AND TIRES
1. Steel wheels are
required. Maximum with 8 inches. No wide five wheels will be
2. Allowable tire will
be Hoosier F40 or F50 scuff.
Racing tires must be purchased from official track supplier.
H. ENGINE PROTEST RULES
1. Protest fee will be
2. Only drivers taking
part in the feature race that evening are eligible to file a
protest. Drivers may only protest a car tht finished in front of
them in the feature race.
3. Any driver wishing
to protest another competitor's engine must present the $500 protest
fee in cash in competition director prior to the start of the
4. Track officials will
visually inspect rods, inspect carburetor, check valve size, CC the
heads, check for porting and polishing, check bore and stroke, and
check for flat top pistons.
5. If the inspection
reveals the engine to be legal, the protested car's driver will
receive $400 of the protest fee, with the track receiving the
If the inspection reveals the engine to be legal, the
protested car's driver will receive $400 of the protest fee, with
the track receiving the remaining $100.
7. If the inspection
reveals the engine not to be legal, the protested driver will be
disqualified for the evening, will receive no money and/or points
for the evening, and will be subject to suspension.
I. ENGINE CLAIM RULES
1. Any engine may be
claimed with presentation of $2,500 cash claim fee by the driver of
any car participating in the feature race as outlined in General
Rules section. Both car of claimant and car of engine being claimed
must finish the feature race.
2. Driver of engine
claimed will be allowed to retain carburetor, flywheel and torque
converter, exhaust system, starter, fuel pump, and power steering
3. Driver of engine being
claimed must prepare engine to be removed.
4. Driver of engine being
claimed will be given the option of purchasing the claimant’s engine
5. Track management
reserves the right to claim any engine.
6. A driver will be
limited to one (1) claim per racing event.
7. A driver may claim any
other competitor’s engine only once per season.