PENTON
RACEWAYS, INC.
2010 LIMITED SPORTSMAN TECHNICAL RULES
**Rules new for 2010 will be
highlighted in Blue.
**Please Note That Rule Changes Or Corrections,
during the season Will Be In Red
This division is open to any American manufactured automobile. NO convertibles,
station wagons or trucks.
WEIGHT:
A. 2800lb with driver, 3 Link rear suspension
B. 2800lb with driver, 4 link rear suspension.
C. 604 crate engine deduct 100lb. from any of above combinations.
D. 602 crate engine deduct
300lb. from any of above combinations.
E. Oversized valves add 50lbs.
F. All cars must have weight posted on right side of roof.
G. All GM crate engines must have factory GM seals or GM/RM seals, or Crate USA seals.
ENGINE:
A. ONLY standard factory street production V-8 or V-6 engines allowed. 362
cubic inches maximum on small blocks and must utilize stock bore and stroke
combinations. 374
cubic inches maximum on Chrysler. Unlimited
cubic inches on large blocks must remain stock bore and stroke, .060ths maximum
overbore.
B. Blocks may be surfaced, and pistons may not exceed top of block more than
.010ths measured without head gasket. Ford and Chryslers may run dome pistons
when using stock factory production cylinder heads with stock size valves ONLY
when using World heads must use 2 valve relief flat top pistons ONLY.
C. All crankshafts must be factory steel or cast iron crankshafts with casting
numbers plainly visible. OEM replacement eagle or scat crankshaft, NO knife
edging or excessive lightening… 48 lbs minimum weight. All cranks must remain
stock stroke to make and model of engine. Example, 350 Chevrolet 3.48” stroke
D. Engine balancing permitted.
E. Timing chains ONLY, no belt or gear drives.
F. NO dry sump oiling systems permitted. Single stage external oil pump allowed,
must pick up and return oil from oil pan NOT an external tank.
CONNECTING RODS:
A. Any sportsman steel connecting rod allowed. MUST remain stock length,
Example 350 Chevrolet must be 5.7” long. 6” rods are NOT permitted. Eagle
H-beam rod permitted, NO other H-beams allowed
B. NO titanium, aluminum, or any other exotic material permitted.
PISTONS:
A. Flat top 2 or 4 valve relief pistons ONLY. Ford must use these pistons when
using the World Product Windsor Sr. heads. Ford and Chrysler may use dome piston
when using stock factory production heads, with stock size valves ONLY.
CAMSHAFT:
A. Any flat tappet camshaft permitted. NO roller camshafts permitted.
B. Lifters must remain stock diameter, Example, Chevrolet .842”
CYLINDER HEADS:
A. Any factory production steel head allowed. 062 or 906 GM Vortec Heads allowed, Intake runner 175cc max. exhaust runner 64cc max. World products 4360
& 4361, and Windsor SR. heads permitted. NO
angle plug heads except Ford & Chrysler NO Bowtie, Dart, SVO N series, or
aluminum heads (except 604 crate motors.)
B. Chevrolet's 1.94” maximum diameter on intake valves and 1.5” maximum
diameter on exhaust. Ford Windsor Sr. OK Oversized valves add 50lb. All other
makes must use stock sized.
C. NO porting, polishing, squaring, or epoxying of
ports.
D. Multi-angled valve jobs permitted. Angle milling permitted.
E. Any valve retainer, and any spring permitted.
F. NO shaft mounted rocker systems permitted. All others permitted.
INTAKE:
A. Aluminum or cast iron intakes allowed.
B. NO porting, polishing, squaring, or epoxying inside
runners or plenum.
C. 1” spacer allowed between intake and carburetor. 602 crate engine may run 2” spacer.
CARBURETOR:
A. One dual line Holley 750 cfm maximum.
Or EAMS spec carb.
Ok. Carbs checked with no-go gauges. No porting
or polishing of venturies, boosters or throttle bores.
B. Air horn may be removed, if not choke butterfly must be removed.
C. May drill idle holes in primary butterflies.
D. No gold claw, silver claw, or demon carbs.
E. Crate motors may use Holley 650cfm, down-leg 3/8 ID boosters allowed. EAMS annular booster
spec carb. Ok. Checked with
go-no-go gauges.
FUEL SYSTEM:
A. Stock type fuel pumps ONLY mounted in stock location. NO belt driven or
electric pumps permitted.
B. NO ALCOHOL, NO NITROUS OXIDE, GAS ONLY.
IGNITION SYSTEM:
A. Any type electronic or breaker type ignition system permitted.
B. NO magnetos
EXHAUST SYSTEM:
A. Collector type headers ONLY. NO zoomies or
Tri-Y headers.
ENGINE POSITION:
A. 1” from center of jack bolt to #1 spark plug, NO Tolerance.
TRANSMISSION:
A. Standard 4 speed or automatic transmission. After market SAFETY bell housing
and automatic cases permitted.
B. NO Tex, Jerico, or
quick change transmissions.
C. Transmissions must have 2 working forward and a reverse gear.
D. Bert or Brinn Transmission OK.
E. Ballspline transmission’s Mandatory to run a
carbon fiber drive shaft, This is a
safety requirement.
CLUTCH:
A. Multi-disc clutch assembly $600 cost limit. No aluminum flywheels.
B. All cars must have a
workable clutch.
FRAME:
A. 104” wheelbase minimum, 1” tolerance.
B. Uni-body
chassis may be connected
.
C. Frame and body do not have to be same make and model. Engine interchange
permitted.
D. Frame must be stock from front clip and have a minimum of 2” x 2”, or 1
1/2”x .090 Round steel tubing from end of original front sub clip to rear
bumper. Must use stock
lower control arms mounted in stock locations.
FRONT SUSPENSION:
A. Jack screws permitted.
B. Tubular upper control arms permitted.
C. 5” coil springs minimum mounted
in stock location.
D. Racing shocks permitted.
E. One working shock per wheel except left rear. NO Single adjustable, or double adjustable shocks allowed.
NO canister style or remote adjustable shocks permitted. NO externally adjustable
shocks.
F. NO rack & pinion steering
allowed. Stock
type steering systems ONLY.
G. Safety spindles permitted. ½” wheel studs minimum 1” lug nuts mandatory.
REAR SUSPENSION:
A. Jack screws permitted.
B. Stock type, or Quick Change rear ends permitted.
C. Torque links or rubber snubber bar
OK, 24” maximum length mount to mount, 5th coils or lift bars OK, must be one or
the other, not both.
D. Any type trailing arms or leaf springs.
E. One
working shock per wheel except left rear. NO
Single adjustable, or double adjustable shocks allowed.
NO canister style or remote adjustable shocks permitted. NO externally
adjustable shocks.
F. Safety spindles permitted. ½”
wheel studs minimum 1” lug nuts mandatory.
BODY:
A. Aluminum or fiberglass bodies allowed. All bodies must have stock appearing
nose pieces. NO wedge bodies.
B. 76" maximum width front to rear. Quarter panels must be 45" long
maximum with a maximum height of 37".
C. Light tube bracing behind bumpers. NO pipes, or push
bars in front of bumpers.
D. 72" maximum width of spoiler, 8" maximum height, 8" maximum
width on side pods.
E. Crate motor 10" spoiler permitted, 10” maximum height, 18” maximum
width on spoiler supports.
F. Must have front and rear tow hooks.
WHEELS AND TIRES:
A. Any Wheel, 14” maximum width.
B. Bead locks allowed on right rear ONLY.
C. Wide 5 wheels and adapters permitted.
D. Track tire Spec/crate D21 or spec/crate D55 Hoosier Racing Tires only.
E. No inner liners.
F. No tire softeners permitted. Tires will be subject to durometer hardness
test at any time to determine legality.
PROTEST
A. Top End $250 - $50 will be retained by track.
B. Bottom End $250 - $50 will be retained by track.
C. Must protest Top End to protest Bottom End.
D. Visual protest $25 - $25 will be retained by track.
E. Crate motors may be protested.
Full Jig Limited Sportsman
Full Jig Frames may compete in
the Limited Sportsman Division on a weekly basis, under the below engine and
chassis package ONLY.
WEIGHT:
A. 2650lb. With
Driver. NOTE: Weight may be adjusted as season
progresses in the interest of fair competition to everyone.
B. All cars must have weight posted on right side of roof.
ENGINE:
A. ONLY standard factory 602 GM sealed Crate
Engines, Engines must have original seals or GM/RM seal bolts, or Crate USA seals
to be eligible for competition. Engines must comply to GM build and rebuild
specifications. Any
tampering above the seal bolts will result in a 30 day suspension from
EAMS. Any Tampering inside
the sealing system will result in a 1 year suspension from EAMS, and engine
will be confiscated.
CARBURETOR:
A. One dual line Holley 650 CFM maximum. Holley HP 80541 ONLY, NO aftermarket
makes or parts, Must have all Holley numbering system,
or EAMS Spec circle track 650.
B. 1” Carburetor Spacer ONLY, allowed with this chassis
package.
C. No Porting or Polishing of
Carburetor, Checked with GO-NO GO gauges.
FUEL SYSTEM:
A. Stock type fuel pumps ONLY mounted in stock location. NO belt driven or
electric pumps permitted.
B. NO ALCOHOL, NO NITROUS OXIDE, GAS ONLY.
C. Sunoco purple or Sunoco GT98 unleaded
only. Fuel must check + or -5 on electric fuel checker when calibrated with
EAMS track racing fuel.
D. Fuel that is burned at track must be bought at track.
IGNITION SYSTEM:
A. Any Electronic Ignition System, MSD or HEI.
B. NO magnetos.
EXHAUST SYSTEM:
A. Collector type headers ONLY. NO zoomies or
Tri-Y headers.
ENGINE POSITION:
A. 6 ½” from center of ball joint to #1 spark plug, ½” tolerance. 50lb weight penalty for every ½” out
of tolerance mounted in front of water pump.
TRANSMISSION:
A. Standard 4 speed or automatic transmission. After market SAFETY bell housing
and automatic cases permitted.
B. Bert or Brinn Transmission OK.
C. Transmissions must have 2 working forward and a reverse gear.
D. NO Tex, Jerico, or
quick change transmissions.
E. Ballspline transmission’s Mandatory to run a
carbon fiber drive shaft, This is a
safety requirement.
REAR END:
A. Standard quick change
rear end permitted. No
Titanium or exotic material axles, spools, gears, or other materials inside
rear end.
FRAME:
A. 103” wheelbase minimum, 1” tolerance.
B. Any Late Model Chassis allowed, Square
tube or Round tube. NO aluminum frames or front clips on chassis, square tube
frames must be a minimum of 2”x 2” tubing, round tube must be a minimum of 1 ¾”
tubing. Full racing roll
cage mandatory, 1 ½ OD x .090 steel tubing minimum.
C. One
working shock per wheel except left rear. NO Single adjustable, or
double adjustable shocks allowed. NO canister style or remote adjustable shocks
permitted. NO externally adjustable shocks.
D. May run 1 of the following rear
suspensions, 5th coil or torque link, NOT both. 1 90/10 shocks allowed to be mounted top of rear end.
BODY:
A. S.A.S.. World of Outlaw,
Crate Racin USA, Fastrak, or NLMS Body
rules apply.
B. 8” Spoiler Maximum with 8”
spoiler supports maximum, must meet above rules.
WHEELS AND TIRES:
Same as Above
