2017 SPORTSMAN RULES
Any rule changes made in 2017 are highlighted in RED.
*Speedway Officials shall be empowered to permit minor deviations from any of the
specifications herein or impose any further restrictions that in his/her opinion does
not alter the minimum acceptable requirements. No expressed or implied warranty
of safety shall result from such altercation of specifications.
*Speedway reserves the right to update, modify, and/or delete rules at any time
deemed necessary to insure safety, fair competition or any other reason that may
be appropriate.
PLEASE BE SURE YOU HAVE READ AND UNDERSTAND THE GENERAL RULES,
SAFETY RULES AND DRIVER SAFETY EQUIPMENT BEFORE CONTINUING.
The word STOCK used within this set of rules means as originally produced by the
manufacturer for that make/model/year of car with no altering or modifications.
Stock replacement parts ok. Must be same dimensions, weight, and/or volume as
OEM part. Determination of whether an aftermarket part is legal will be the tech
inspector’s decision.
NO CARBON FIBER OR TITANIUM PERMITTED ANYWHERE ON CAR. NO BUMP
STOPS, BUMP SPRINGS OR CHASSIS LIMITERS. NO TRACTION CONTROL
DEVICE(S) OF ANY KIND.
CAR:
A. Minimum wheelbase of 104 inches. Must be same on both sides 3/4 inches
tolerance.
B. Cars will be allowed at the discretion of the tech official.
CHASSIS:
A. Must run stock OEM front clip, may be notched for fuel pump and oil pan
clearance. Cross member must retain stock dimensions from bottom of cross
member to lower control arm pick up points.
B. Ride height minimum is 4” with driver in car (includes body, chassis and lead).
No pulling up on car in tech line.
ROLL CAGE:
Required – SEE SAFETY RULES.
FUEL CELL:
Required – SEE SAFETY RULES.
BODY:
A. Body may be steel, aluminum or fiberglass.
B. Front windshield mandatory, rear optional 1/8’ LEXAN. No side windows. Must be
full windshield.
C. Bumpers may remain stock type or be replaced with tube bumper or aluminum
eye beam.
D. Nose cover mandatory. Front splitters may either be made in the nose or
fabricated but may not be any longer than 3 ¼” and with a maximum of 3
supports no larger than ½” rod.
E. Spoiler maximum 6” x 60”. No spoiler sides. Must be clear lexan. Spoiler must be
centered on car.
F. No sideboards, wings or fins.
G. Maximum rear quarter panel height is 36.5 inches.
SUSPENSION:
A. Stock steering type box and idler arm in stock location. Steering shaft must be
track approved with center steering knuckle. No straight steering shafts.
B. Any stock diameter steel springs. NO coil over’s.
C. Only one shock per wheel permitted. All shocks must be steel; non-adjustable
(re-valving shocks are legal). Adjustable shafts and canisters are not permitted.
Claim rule: $200 per shock. Must be on the lead lap to claim shocks
D. Front and rear wedge bolts are optional. Leaf springs may use adjustable rear
mount.
E. Spindles must be stock. Steel safety hub permitted to fit stock spindle; No drop
spindles of any kind.
F. Tubular upper control arms optional. Stock OEM lower control arms in stock
location. Lower control arms must be per original manufacturer’s specifications for
year/make/model.
G. Ball joints of any type allowed.
H. Stock center link, tie rods, pitman arm and idler arm. OPTION: Outer and inner
tie rods may be replaced with heim joints and may run after market centerlink and
idler arm.
I. Front sway bar must be stock or aftermarket, one piece style only.
J. No mixing of parts must be Chevy on Chevy, Ford on Ford, and Dodge on Dodge.
Exception: Rear end.
K. No bump stops
ENGINE:
Stock cast iron production blocks only. Chevrolet 350; Dodge 360; Ford 351
maximum. Chevy 602 will be teched 100% by the GM Tech Manual which is
available here. Four bolt main engines ok.
A. Maximum .060 overbore.
B. Crankshaft: Stock unmodified crankshaft, stock stroke for block used. Balancing
ok. Cast crankshaft – 49lbs minimum. Steel crankshaft – 51 lbs minimum. Minimum
crankshaft height is 12”
C. High volume oil pump o.k.
D. Balancer: Stock or stock replacement.
E. Rods: Stock steel or cast. Size and length must be stock.
F. Pistons: Any stock two or four eyebrow three ring or stock flat top piston.
G. Lifters: Stock hydraulic or solid lifters. No oversized.
H. Camshaft: Any flat tappet or hydraulic. .525 maximum lift.
I. Timing Chain: Stock. Aftermarket double row chain o.k.
J. Heads: Any stock, straight plug, steel or cast head. No gasket matching. World
Product SR head ok. Vortec heads must add 50 lbs. Must meet all head rules.
K. Valves: Intake 1.94 and Exhaust 1.50. Stock replacement stainless steel o.k.
L. Valve Springs: Stock diameter valve springs and retainers. No double springs.
M. Rocker Arms: Standard mounted, stock ratio roller rockers (1.5). No other size.
N. Screw in studs and guide plates ok. Stock stud diameter (3/8”) polylocks o.k. No
stud girdles.
O. Intake: Stock automotive cast iron 2 or 4 barrel or Edelbrock 2101 unmodified.
P. Carburetor: Stock Holley #4412, 500 cfm with maximum 1.60 spacer/adapter
between intake and carburetor. Changing of jets, power valves, drilling of holes in
butterflies permitted. Removal of choke plate permitted, tower must remain in
place and be unmodified.
Q. Air Filter: Can extend through the hood.
R. Distributor: Stock HEI or single points fired distributor. Super coil o.k. NO MSD
boxes. May run rev limiter
S. Pulleys: Optional.
T. Mechanical fuel pumps only. No electric.
U. Exhaust: Headers are optional.
V. Water pump: Steel or aluminum o.k.
W. Radiator: Aluminum o.k.
X. 602 Crate Engine optional. May run Holley 650 HP carb. or Holley 4412 500 2bbl
carb Must fit track gauges. Option 602 crate engine may run the 604 crate engine
oil pan or inexpensive steel oil pan. Legal 602 crate motor will get 100 lb
weight break
Y. Engine location: Most forward spark plug must be even or ahead of top ball joint.
Solid motor mounts o.k.
Z. Engine height to be 12” minimum.
TRANSMISSION:
A. Any stock OEM standard or automatic. Must have at least two forward gears and
reverse.
B. Stock OEM clutch and flywheel (10 inch minimum); nodular iron ok. Steel bell
housing mandatory. No aluminum components in disc or pressure plate. No drilling
or lightening of components. No scalloped pressure plates.
C. Steel Driveshaft only. Must be painted white. SEE SAFETY RULES
DIFFERENTIAL:
A. Stock, Ford 9” steel floater or quick change
B. Must be locked. No clutched differentials.
C. Wheel studs must be minimum 1/2? diameter.
D. No cambered rear ends.
E. May use quick change rear. Must have steel tubes. No cambered tubes. Must
have spool. No Mini Quick Change rears allowed.
BRAKES:
A. 4 wheel brakes all in working order at all times.
B. Single piston steel calipers only. Single piston Howe allowed.
C. May run steel front safety hubs. May run aftermarket rear hats and rotors.
WHEELS & TIRES:
A. 8” steel racing wheels with any offset.
B. Track approved 8” tires only.
C. No Bleeders.
D. No tire soaking or treatment of any kind
WEIGHT:
A. 3000 lbs. Left side maximum weight 56%. Legal 602 Crate motors receive
100 lb weight break (2900 lbs).
B. Vortec heads have a 50 lb weight penalty
BATTERY:
12 volt only. SEE SAFETY RULES.