rules and/or regulations set forth herein are designed to provide
for the orderly conduct of racing events and to establish minimum
acceptable requirements for such events. These rules shall govern
the condition of all events, and by participating in these events,
all participants are deemed to have complied with these rules. NO
EXPRESSED OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM
PUBLICATIONS 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.
ECONOMY MODIFIED RULES: 2018
Driver must stay in car unless on fire or be DQ'd!
USRA B-MODS APPLY
IMCA Building Rules will apply on body and chassis with the
following Exceptions: 3-link or Leaf spring rear suspensions only.
NO 4 Link. NO Z link. Spoilers: 8 inch with 10 inch side plates.
2450 lbs. min. weight w/driver, after the race
AND DRIVE TRAIN:
CRATE ENGINE **
Required to run Holley 500 CFM. 2 barrel carburetor. ALL CRATE
ENGINES are subject to tear down,
ENGINE: Must be stock production, Factory produced blocks only.
OEM blocks only. No bowtie or aluminum blocks. NO 400 blocks. IF
90 or newer, MUST HAVE MANUAL FUEL PUMP. GM to GM, Ford to Ford,
Dodge to Dodge. NO 400 blocks. NO bowtie or aluminum blocks.
Stock3.48 or 3.50 stroke, 2.10 rod journal size on gm
crankshafts. OEM replacement crank (stock 3.48 or 3.50 stroke
and weight, 49lb. Min, OEM replacement only) allowed.
Crankshafts may be turned .010,.020 or .030. STOCK GM or STOCK
replacement, 5.7 (2018 - or 6") length, I BEAM (2018 - cap screw
allowed ,NO POLISED) rods. H beam rods ok . 2018 - Flat top or
dished pistons. 1 inch oil pan inspection plug on the driver
side behind the motor mount required. Casting numbers must be
readable. Maximum cubic inch displacement to include clearance
and wear, 360 for GM, 363 for Ford and 370 for Mopar. No
stroking or de-stroking. 2. INTAKES: Unaltered OEM cast iron or
aluminum intake (Marine included) or any unaltered aftermarket
dual plane aluminum intake approved by track officials NO
porting or gasket matching of the intake or heads. NO acid
dipping. Intake can NOT be worked or reworked under carburetor
area. NO air gap, NO Brezenski, Torque Link or cross ram types.
Plenum divider must be even/flush across the top. Intakes are
subject to Tech Officials decision.
INTAKES: Unaltered OEM cast iron or aluminum intake (Marine
included) or any unaltered aftermarket dual plane aluminum
intake manufactured by: Weiand, Edelbrock ,Holley or
Professional Products AND approved by track officials. NO
porting or gasket matching of the intake or heads. NOacid
dipping. Intake can NOT be worked/reworked under carburetor
NO air gap, Brezenski, Torque Link or
cross ram types. Plenum divider must be even/flush across the
top. Intakes are subject to Tech Officials decision.
CARBURETORS: 500 CFM maximum: 1 11/16" throttle bore maximum.
Must pass a "go-no-go gauge". 1 inch carb spacer allowed. Can
not exceed 1 1/2 inch total height, including
gaskets/spacer/adaptor, between the intake and carb base. NO
Stock cast OEM production, OE Vortecs OR (2018 ) -
Aftermarket head numbers: GM EQ Part #CC167ES2 or #CH350I:allowed.
1.25" diameter Valve springs ( .015 tolerance) and a Maximum
Valve size of 1.94 INT & 1.50 EXT. Guide plates, Screw in studs
and Poly locks are allowed. NO stud girdles. NO Aluminum heads.
NO angle plug heads except ford . NOBOW-TIE performance heads.
NOangle milling block or heads. NOBrezinski products. NO
porting, polishing or acid dipping. (2018)-FORD GT 40, Mopar
W-2's allowed. Casting numbers must be readable.
IGNITION: Only OE style (GM =HEI) distributors. NO remote coils
on GM distributors. NO Magnetos, or crank triggers. Battery may
be relocated and must be securely mounted in a battery box/trey
w/hold down. NO onboard electronic devices capable of storing
information. Recall Tachs allowed.
Hydraulic camshafts and lifters ONLY. Cam must be no larger than
480 lift (max) at the valve. Stamped steel or roller tip rockers
or roller rockers ok . (GM 1.5 ratio only) NO Solid, flat
tappet, mushroom or roller hydraulic cams or lifters.
TRANSMISSION: Automatic (TCI allowed) or standard transmissions.
A working clutch and/or torque converter is MANDATORY. Driver
must be able to put the car in gear from park/neutral and move
forward and reverse at time of inspection. 10 inch minimum stock
appearing, disc-type style clutch, steel pressure plate, and
steel flywheel. NO aluminum flywheels. NO direct drives. Manual
transmissions. MUST HAVE 180 or (360 w/inspection hole) DEGREE
EXPLOSION PROOF BELL HOUSING. AUTOMATICS MUST HAVE AN EXPLOSION
or Racing gas only.
American Racer G-60 or Hoosier G-60's Modified pull offs
(stamped imca or not) or any 10 inch Hoosier asphalt pull off F-
35 or higher. Tire(s) must durometer 50 or greater. Grooving and
siping is allowed. Use of any chemical additive or tire
softening is not allowed.
WHEELS: 8" or 10" steel racing wheels ONLY. Right rear beadlocks
allowed. 5/8 studs and 1" lug nuts MANDATORY.
SHOCKS: Steel shocks only. NO Aluminum shocks. $100.00 claimer
fee, (each) on shocks. To Claim: any Driver may claim from 1, to
all, shocks from any 1 car finishing ahead of him/her. Driver
will have cash in hand no checks after the race claiming driver
has to hand the Flagman before the claiming car pulls off he
track the money and tell the Flagman which shocks he is
floaters allowed. NO traction control devices
of Officials/Participants and minor unsportsmanlike actions: No
participant shall engage in improper behavior on or off the
track, on social media, in or out of the race car, nor shall
he/she subject any track official, track employee, sponsor, or
participant to any abusive or improper language at any time. Any
driver who gets out of his/her race car, or any participant who
verbally assaults or threaten any track official, track
employee, sponsor or another participant may be suspended. If
suspended will lose all track points up to that point.
PROTESTING: (Only the driver can protest)
DRIVER PROTESTING MUST HAVE PARTICIPATED IN TWo PREVIOUS
CONSECUTIVE RACES AT THE TRACK, MUST HAVE FINISHED IN THE TOP
FIVE the night of the protest AND CAN ONLY PROTEST A FINISHING
POSITION AHEAD OF HIS/HER OWN. THE DRIVER GETTING PROTESTED WILL
HAVE - 10 MINUTES - TO counter PROTEST the DRIVER PROTESTING
HIM/HER, - IF HE/SHE WISHES TO DO SO . DRIVER MUST GIVE - CASH -
TO THE FLAGMAN ImMediately after the END OF THE RACE.
$200.00 - Upper engine protest.Heads /Cam type/ Bore / Stroke /
Inspect for lightened crank
$125.00 - Transmission and/or clutch and flywheel
** $100.00 - Suspension/Shocks**
**$50.00** of the money goes to the driver's point fund
*25.00* of the protest money goes to the wrecker - if used to
pull the engine.
$100.00 Claimer on each shock. May claim 1 to 4 shocks. Driver
can only claim 1 set (4 shocks), or 4 individual shocks, per
THE TRACK reserves the right to protest
or claim any shock or car at anytime.