Mid Atlantic Sportsman Series

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2 Νοε 2013 (πριν από 3 χρόνια και 9 μήνες)

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1


11/2/2013

Mid Atlantic Sportsman Series

2011 Rules
-

3/15/2011



1.
Competing Models

1970

or newer American cars listed below, chassis and body must match, and be listed below.

General Motors



Ford




Monte Carlo



Thunderbird



Camaro
/Firebird



Torino

Cutla
ss




Regal

Grand Prix




2.
Body

A.

Bodies must be mounted in stock location.

B.

Front nose, grilles
and rear bumper may be plastic.

C.

Hood may be fiberglass, no openings permitted

D.

Must have stock floor pan. Right side may be raised to allow for exhaust clearan
ce only
.

E.

Must retain Front and rear firewalls, all openings must be sealed.

F.

Full windshield must be used,
must be
made of
at least 3/16” Lexan, and
have at least 2
internal supports.

G.

Rear window may be used,
must be
made of
at least 1/8”
Lexan
, and

have a
t

least 2
external supports.

H.

Rear spoiler may be used, must be no wider th
an 54”, Maximum height of 5

inches, must
be ¼” Lexan, and securely anchored.

I.

Mu
st have a complete dashboard, may be fabricated, must be steel.

J.

Front
&

Rear Hood Pins must be magnetic
Steel.


3. Frame and roll cage

A.

Must have stock wheel base, minimum

105 inches

B.

Wheel base must be within 1” side to side

C.

Tread width maximum 68
inches

D.

Frame must be stock
for vehicle type, frame dimensions must remain stock between rear
kick ups and front s
uspension. Fabricated “tubular frames” may be used only in front of the
front suspension, and behind rear frame kick ups.

E.

Minimum 4” ride height, measured to frame rail

F.

Refer to NASCAR rule book for safety
and roll bar
information

G.

An A&B transponder is r
equired to be installed 14’ 2” from the leading edge of the front
bumper


4. Weight

A.

Cars m
ust weigh at least 3250 pounds with driver

at qualifying, minimum

left
side
weight

55%.

B.

Added weight must be securely bolted in

place with a minimum of two

3/8” bolts
.

C.

It is recommended that w
eight
should

be added between the rear axle and front spindles,
and mounting must be acceptable to track officials
.

D.

The weights must be painted white with the car number on all sides.

E.

All added weight must be in solid block form
.


5. Front Suspension and Steering

A.

Steering components must
be stock OEM type steel components, no aluminum parts.

B.

Stock OEM
type
steering box must be used, and bolt in

the

OEM location.

C.

Lower A
-
arms must remain stock or aftermarket OEM

replacement

type a
nd be the same
2


11/2/2013

length on both sides. Mono
-
balls

not allowed, tubular components not allowed.

D.

Only stock
,

OEM

type, solid steel sway
bars are permitted
, no multi
-
piece or aluminum
parts.

E.

Springs mu
st be mounted in stock location;

no coil
-
overs permitted
; Ja
ckscrews are
permitted.

F.

Tubular steel ,fixed length,

upper control arms are permitted
; mounts may provide vertical
adjustment only, shaft must be steel.

G.

May install larger or screw in type ball joints but must mount in stock location.

H.

No Adjustable style
ball joints permitted.

I.

Center of the steering wheel must be padded.

J.

Quick release steering wheel coupler is mandatory.

K.

Aftermarket power steering pumps permitted.

L.

Collap
sible steering shaft or multiple u
-
joints required.


6. Rear Suspension and Drive Tra
in

A.

Stock OEM 3 or 4 speed transmissions. No aftermarket allowed.

All Gears must function.

B.

Automa
tic transmissions are allowed, must

use a torque converter
with
10”

minimum
diameter, must use transmission blanket or steel shield.

C.

Bell housing must be a “Lak
ewood” type 360 degree drag racing style that

is blow
-
proof.
The bottom may be cut out for inspection.

D.

Steel flywheel is required.

E.

Single or Double disc clutches only

F.

Only s
tock
OEM type steel d
rive shaft

is

permitted, minimum of 3” diameter. No aluminum

d
rive shafts. Drive shafts must be painted white.

G.

Drive Shaft must have 2

safety loops made of ¼” thick and 1”

wide soli
d steel. Must be
located 6 inches to 12

inches from each universal joint.

H.

Acceptable
Rear ends


9” Ford, 10 or 12 Bolt General Motors

I.

3

Link suspension permitted

J.

Pan hard bar

is permitted,
must be steel.

K.

Trailing arms must be steel. No truck arms.

L.

Top
bar must be steel


7. Brakes

A.

Must be stock
steel
production or aftermarket stock
steel OEM replacements only. No
Aluminum components.

B.

No hi
gh
-
performance aftermarket or racing cali
pers allowed. Maximum of 1

piston per
caliper.

C.

Four
-
wheel disc brakes permitted.

D.

One

brake adjuster permitted.

E.

Dual master cylinders permitted.

F.

No after market lightweight drilled or cross cut rotors allowed.

G.

No br
ake fans allowed


8. Shocks

A.

Any AFCO 12 or 14 series shock or Pro Shock WB series

B.

One
steel bodied shock per wheel. Maximum shaft diameter is 5/8”.

C.

May relocate front and rear shocks.

D.

No re
-
b
uildable, re
-
valveabl e
, or adjustable shocks allowed.

E.

On AFCO 14

series shock, coil overs are not permitted


9. Electrical

A.

Wet Cell

battery must be installed in an enclosed metal or plastic box, located in front of the
rear axle housing or behind the driver’s seat. The battery box must be mounted inside the
frame rails

and cannot extend below the bottom of the frame rail. The battery mounting
position must be acceptable to Track Officials.

Dry Cell battery does not need to be
3


11/2/2013

enclosed in box.

B.

A battery master switch m
ust be mounted in center of dash and labeled ON/OFF.

C.

Aftermarket starters are permitted.


10.
Engine

A.

Stock, OEM standard production, cast iron
engines only.

B.

Casting numbers must be visible, any block with casting numbers ground off will be
deemed illegal.

C.

All engines must be located
so that the c
enter of cr
ankshaft
is

on
centerline of the frame
and tread width. Front spark plug must be within 1 inch of the center of upper ball joint.

D.

Displacement

GM block with a
maximum
displacement of 3
61 Cu In only.

Ford block with a

maximum

displacement of 3
63

Cu In only
.

E.

Pistons

a.

Stock production replac
ement cast or forged pistons permitted, flat top pistons only.

b.

Minimum deck height of zero.

F.

Rods

1)

Stock OEM production or stock replacement steel rods only.

2)

Must be st
ock length, GM


5.7”, Ford


5.96” only

3)

No polishing, l
ightening, or altering rods.

G.

Crankshaft

1)

Stock productio
n OEM or OEM replacement cast Iron cranks.

2)

No modifications
permitted, n
o cutting down of counterweights, polishing, or
lightening in excess of balancing.

H.

Camshaft

1)

Only standard hydraulic camshafts all
owed, no roller cams, no solid lifters

2)

Lifters must be steel

I.

Timing Chain

1)

Double roller timing chain allowed. Gear or belt drive timing systems not permitted.

J.

Ignition

1)

Any OEM HEI or point’s type distributor allowed. No MSD, crank triggers, magnetos,
etc.
permitted

K.

Lubrication

1)

Stock production ass
embly only, no Dry Sump systems, no Acusump.

2)

No oil coolers or remote filters.

L.

Heads

1)

No aluminum heads permitted.

2)

No porting, polishing, acid porting, coatings, etc. permitted.

3)

Three (3) angle valve jobs permitted
using normal machining procedures. No cutting
in pockets.

4)

Guide plates and screw in studs permitted.

5)

Aftermarket valves must be same shape and size as factory. No Undercut valves.

6)

Stock type or roller rocker arms

permitted
, 1.5 or 1.6 ratios only.

7)

Minimum

58 CC combustion chamber

8)

General Motors permitted heads

Any GM steel production head

World Products brand head permitted:

S/R Torquer

-

170cc runner

9)

Ford permitted heads

Any Stock steel production head offered on a 2
-
barrel version of the motor used.

Wor
ld Products brand head permitted:

Windsor Jr


180 cc runner

M.

Intake

a.

Edelbrock Performer series only, no modifications allowed

b.

General Motors
-

#2101 or 2116 (Vortec Heads)

c.

Ford
-

#2750 or #2181

4


11/2/2013

N.

Carburetor
s

1)

Model
2300 2bbl carburetor
, 350 CFM Holley part

#
7448 with 1 3/16” venturi, or 500
CFM Holley part #4412 with 1 3/8” venturi. Carburetor must pass Go/ No Go gauge.
Throttle bore must be no larger than 1 11/16”.

2)

All air leaks must be sealed by use of epoxy or other permanent method. Any attempt
to pull ou
tside air other than through the venturi is not permitted.

3)

No HP metering blocks permitted.

Metering block must be stock

Holley units
.
(Specifications for a stock metering block can be found on Old dominion speedways
website, under late model rules)

4)

No res
haping, polishing, grinding or drilling allowed. No adjustable (jetted) air bleeds
or circuits. Gaskets must remain un
altered.
No chrome
carburetors.

5)

C
hoke may
be removed, power valve

may be changed, accelerator pump cam, and
accelerator pump discharge noz
zles may be changed and the jet size may be
changed. Idle holes may be drilled in the butter
flies.

6)

Only a one
-
piece

solid aluminum carburetor spacer, a minimum 0.700 inch,
maximum 0.750 inch in thickness, must be installed between intake manifold and
carbu
retor.
Adaptor m
ust not offer any adjustments, Suggested part # Moroso 64966
or similar.

7)

The spacer must be centered on the intake manifold and have two (2) round holes
located in the center that match the base of the carburetor.

Carburetor must be
center
ed on the spacer.

Holes must be cut perpendicular with the base of the
carburetor.

8)

A one
-
piece two
hole paper gasket maximum 0.065 inch thickness that matches the
exterior dimensions of the carburetor throttle base plate, must be installed between
the c
a
rburetor and spacer. A one
-
piece paper gasket maximum 0.065 inch thickness
must be installed between the spacer and intake manifold. The gasket must be no
larger than the top of the intake manifold.

9)

Round dry paper element, min. 12 inches, maximum 17 inche
s in diameter permitted.

10)

Element must be
minimum of 1
-
1/2 inches, maximum
4 inches in height.

11)

No carburetor hats, ducts, baffles, etc.

12)

Air cleaner must not protrude through hood.

13)

No cooling, spraying, or altering of air cleaner.

14)

Bottom of air cleaner canno
t be above choke horn.


11. Exhaust


A.

H
eaders are permitted.

B.

Exhaust pipes must extend past driver.

C.

No Cross over pipes or flex pipes are permitted.

D.

Magna Flow muffler #12298 (3”
inlets
on all cars).

E.

Car exhaust system shall have one Magna Flow performance
muffler installed. The
installed muffler will function as a “Y
-
pipe”, with the output of each header connected to the
dual muffler inputs, and the single output of the muffler connected to tail pipe



1
2
.
Cooling


A.

Engine mounted fans, if used, must be oper
ational and belt driven from the crankshaft.
Free spin or clutch type fans will not be permitted.

B.

Electric engine cooling fan
s are optional
. An electric fan can be used in place of a
mechanical fan or in conjunctio
n with one.

C.

If an engine
-
driven fan is use
d, it must be a standard magnetic steel fan with a minimum of
four (4) blades. Removal of the fan blades or fan belt will not be permitted.

The fan blades
must be a minimum of 3 1/2 inches wide. Flat fan blades will not be permitted.

T
he shroud
must follow

the entire circumference of the fan and must not extend more than one (1) inch
rearward of the trailing edge of the fan blade. Flat panels will not be permitted.

D.

The radiator overflow pipe must be relocated to the lower right side of the windshield.

E.

The r
adiator must be centered to the water pump. No offset.

5


11/2/2013

F.

Aluminum radiators are permitted.

G.

Use of Anti
-
Freeze is not allowed.

H.

Stock OEM type steel, belt driven

water pump

only.

I.

Aluminum pulleys allowed.


13. Fuel System

A.

Use

of

racing fuel permitted.

B.

No addit
ives permitted

C.

Refer to NASCAR rule book for fuel cell construction, minimum 8 gallons, maximum 22
gallons


14. Wheel & Tire

Information

Old Dominion Speedway

A.

Wheels must be 15
-
inch diameter five lug magnetic steel wheels

B.

Wheels must be
10
-
inches wide

C.

Ble
eder valves will not be permitted
.

D.

Offset must be same on each side

E.

Only OEM bolt pattern wheels and hubs may be used

F.

Tires will be 10” Hoosier tires

G.

4 new tires permitted per car for the season, no more than two can be purchased after the
4
th

race.

H.

Only u
sed tires obtained from ODS will be allowed.

I.

Old Dominion Speedway will provide used tires for a nominal mounting charge.

J.

No limit on the number of used tires.



15. Competition policies

A.

The first place finisher will start in last place at their next race.

B.

Winners of 2 consecutive races will be required to add 50lbs to their car weight.

C.

Time permitting, as determined by the track, all cars will qualify

D.

Starting order will be determined by pulling a pill, of up to half the number of cars to
determine the inv
ersion, (i.e. with 10 cars, there will be 5 pills, and maximum inversion
will be 5 cars)

E.

The attached tech sheet must be completed prior to the first race a car is driven in


16
.
Minimum Inspections

A.

All cars will be weighed prior to qualifying each week

B.

E
ach week part
s

will be selected for inspection
on

the top 3 finishers,

by drawing,

from the
following items

1)

Tire Hardness & Serial Numbers (every week)

2)

Carburetor
,

Adaptor plate

& Intake

3)

Lifters, Rockers, and Valve springs

4)

Displacement
, location, cast iron

5)

Ignition

& Shocks

6)

Steering components

7)

Rear suspension

8)

Wheel Base
,
Tread width

& ride height


17
.

Infractions

A.

First infraction,
Driver will be disqualified for the race.

B.

Second infraction, a
ll points earned previously during the season will be forfeited.


18
.

Pending for 2012

A.

A 1” pipe thread plug must be installed in the side of the oil pan, providing a view of the
6


11/2/2013

1,2 counterweights or 7,8 counterweights, to allow for inspection of crank and rods
without removal of engine.



19. Change History

A.

February 12
, 2011, reformatted, renumbered


Any further questions about the Mid
-
Atlantic Street Stock rules should be
directed towards either Dave Nobles, 301
-
785
-
7205

davejenn68@verizon.net
or
Phil Kenney, 571
-
235
-
3211,

pmkenney@comcast.net