HOBBY STOCK RULES
(Paris Motor Speedway (PMS), reserves the right to inspect any car at any time. No car will be
considered as having been approved for safety and/or deemed legal by reason of having passed through
inspection, unobserved.)
IF THESE RULES DON'T SAY "YOU CAN", THEN "YOU CAN'T"!
1. SAFETY EQUIPMENT: Rules apply at all times car is
on track. Snell-rated SA2000 or Sa2005 helmet
required. (Effective January 1, 2008, SA95
helmets are no longer allowed). Roll bar padding
required in driver compartment (fire retardant
recommended). SFI approved full fire suit required.
Fire retardant neck brace, gloves and shoes required.
Recommended: Fire retardant head sock and
underwear; head and neck restraints; collapsible
steering shaft. Driver-side window net required,
minimum 16” by 20” ribbon or mesh style and must be
mounted so latch is at top front of window. Minimum
3” wide SFI-approved five point safety belt assembly
required (y-type shoulder harness not allowed), must
be mounted securely to roll cage, recommended
to be no more than one year old. Kill switch required
within easy reach of driver and must be clearly
marked “OFF” and “ON”.
2. FRAME: Any American OEM full body rear wheel
drive passenger car, 1964 or newer, full frame or
unibody. Frame must match body. Minimum 107.5”
wheelbase, maximum 1” difference from side to side.
Rear of frame behind rear tires, no further forward
than 1” behind factory seam, may be replaced in
OEM location with 2” by 3” steel tubing with 0.095”
wall thickness, same length as material removed.
Factory seam must remain visible. Unibodies must
tie rear frame to front frame. Frames may be “X”
braced. No Cameros , Firebirds or Mustangs.
3. ROLL CAGE: Main cage must consist of continuous
hoops, minimum 1.75” O.D. tubing, with wall thickness
of at least 0.095”, low carbon or mild steel
recommended. Four-post roll cage required, front
down bars and rear hoop must be welded to OEM
frame. Driver’s head must not protrude outside cage
with helmet on. Rear hoop must have “X” brace,
consisting of one full horizontal and one full diagonal
bar, minimum 1.25” O.D. with 0.083” wall thickness.
Front down bars must be tied together, passenger
side front down bars must be maximum 11” in from
top of door. Must be minimum 40” between front
and rear down bars at top of door panel. Maximum
41” from top center of windshield to front edge of rear
hoop; maximum 13” to front edge of top halo.
Top halo must be minimum 40” across, outside to
outside. Rear hoop may maximum 12” in from bottom
of operator window. Minimum one cross bar in
top halo. May have maximum two horizontal bars, (in
addition to bar tying front frame horns together) for
radiator protection; must be behind bumper ,
within confines of body, no wider than OEM frame
horns. Rear kickers (down bars) and engine hoop
required, and must be minimum 1.25” O.D. tubing
with 0.083” wall thickness. Fuel cell protection
required, must be mounted frame rail to frame rail, no
higher than fuel cell, inside trunk area with maximum
1.75” O.D. tubing. All bars must be inside body.
4. DOOR BARS: : All door bars and uprights must be
minimum 1.75” O.D. with 0.095” wall thickness.
Minimum three door bars, both sides, parallel to
ground, and perpendicular to driver. Minimum four
uprights tied from frame to top door bar on driver side,
and minimum three uprights on passenger side.
Steel door plates, 18 gauge or 0.049” minimum
thickness, must be securely welded to outside of door
bars on driver’s side. Plate must cover area from
top door bar to rocker panel and from rear down post
to 5” in front of seat. Must be visible for inspection.
5. BODY: All bodies must be unaltered OEM in OEM
location and match frame. Front body mounts must be
visible. Sunroofs and t-tops must be
enclosed. Aftermarket plastic nose pieces allowed,
recommended to match body. No spoilers, hood
scoops. Unaltered OEM STEEL hood and trunk only,
no gutting of trunk. Hood and trunk must be securely
fastened and back of hood must be sealed off from
driver compartment with metal. Hood must be
separate from fenders. Front inner wheel wells may
be removed, rear wheels wells may be removed to
middle seam. Trunk floor directly over rear end
housing must be removed. No overlapping or
shortening of body panels. All glass must be removed,
all windows in body must remain open; maximum 7”
metal sun visor allowed across top of windshield
opening. All doors must be securely fastened.
Fenders and quarter panels may be trimmed for tire
clearance, ONLY. No reflective body panels.
6. DRIVER COMPARTMENT: Minimum three windshield
bars in front of driver. Aluminum high-back seat only
and must be bolted in, using minimum 0.375” bolts.
Driver seat may be no further back than rear edge of
B- pillar. Driver must be sealed off from track,
driveline, engine and fuel cell. Dash not to
extend more than 24” back from center of lower
windshield opening. Dash must be flat,, rear can be
no higher than front, except for cowl in front of driver.
No other interior tin or covers. Inside rear quarter
panels, below window level, may be cut out. Doors
may be gutted. No cutting out of firewalls, roof, floor,
kick panels, rocker panels, except for roll cage
clearance. All holes in firewalls and floor must be
covered with metal. Rear firewall and speaker deck
must be metal and be of OEM design for that make
and model. No mirrors of any kind.
7. FRONT SUSPENSION: All components must be steel
altered OEM, in OEM location and match frame. OEM rubber A-frame bushings only. No spring
spacers, chains or cables. Exceptions are:for 1978-
1987 GM mid-sized metric frame, OEM upper A-
frame may be replaced using aftermarket upper A-
frame (steel only), must display “IMCA approved”
decal on top of rear tube of A-frame; bolt on spindle
savers allowed. Upper A-frame mount must remain
OEM and cannot be moved.
8. STEERING: All components must be steel unaltered
OEM, in OEM location and match frame. OEM
steering column may be replaced with steel
steering shafts, (collapsible steering shaft
recommended). Steel knuckles only. Quick steering is
allowed. Steering wheel and quick release (required)
may be aluminum.
9. SHOCKS: One unaltered steel, non-adjustable, OEM-
mount shock, in OEM location, per wheel. No coil over
shocks, air shocks, remote reservoir
shocks. No Schrader or bladder type valve allowed.
No coil over eliminators. Rear OEM shock location is
4.5” from bottom of housing to center of bolt
hole, and centered on control arm bracket.
10. SPRINGS: One steel spring per wheel only in OEM
location. All coil springs must be minimum 4.5” O.D.
and non-progressive.
11. REAR SUSPENSION: All components and mounts
must be steel, unaltered, OEM, in OEM location and
match frame. OEM rubber control arm
bushing only. Center of rear lower control arm bolt
hole must be 2.25 inches from bottom of housing. No
independent rear suspension. No sway bars,
panhard bars, spring spacers or rubber ,chains or
cables.
12. REAR-END: No Floater rear ends. OEM, or OEM
replacement solid steel axles only .Nine inch ford rear
end allowed, but must be mounted like OEM
rear end (centered) for that make and model. One
inch inspection hole in housing required. No lightened
ring gears. Must be welded spider gears, or mini
spool. No torque dividing differentials.
13. BUMPERS & RUB RAILS: Bumpers must be
approved OEM in OEM location, capped to fender
with steel, welded or bolted. Maximum one inch wide
by two inch tall steel or lexan rub rails allowed- bolted flush to body. Front and
rear tow hooks mandatory
No sharp edges allowed on bumpers, rub rails or
bolts. No bars past outside edge of body other than
rub rails.
14. TIRES/WHEELS: Must use unaltered Hoosier race
tires, G60-15. No softening/conditioning, siping/
grinding or grooving of tires. Wheels must be a
max. of 8” wide. May use bead lock on right side of
car only.1´O.D.steel lug nuts required. No bleed
valve.
15. BRAKES: Steel, unaltered OEM, or unaltered OEM
replacement, operative four wheel, disc (front) and
drum or disc (rear ) brakes, must match frame
or rear end. Full OEM backing plates, no
aftermarket. Master cylinder must be in OEM
location. No antilock brake systems. No aftermarket
brake pedal assemblies, brake shut off or bias
adjuster. Steel brake lines only, must be visible .
Hubs / rotors , axle flanges and drums may be
changed to different bolt pattern and larger studs.
16. EXHAUST: OEM cast iron exhaust manifolds only.
No center dump type manifolds.. Exhaust must
extend past firewall and turn towards ground.
Maximum two inch O.D. exhaust pipes. Must remain
dual exhaust, no crossover or `Y` pipes. No exhaust
sensors. Mufflers recommended.
17. FUEL SYSTEMS: Mechanical OEM type push rod
fuel pumps only. Unaltered OEM two barrel
carburetor for that engine, except: booster I.D. may
be machined to 0.25 inch and venture I.D. machined
1.375 inch on Rochester carburetor. Must remove
carburetor choke plate. Air cleaner top / stud cannot
direct air into carburetor. No top flow air cleaner
housings, cold air boxes or air cleaner duct work.
Maximum 22 gallon racing fuel cell required, must
be in minimum 20 gauge steel container. Must be
securely fasten in trunk above level of OEM trunk
floor, behind rear tires, no further than factory seam
where rear frame rail can be replaced, with minimum
two solid steel straps around entire cell, two inches
wide and .125 inch thick. No fuel cells allowed over
rear end housing. Metal firewall must be between
driver and fuel cell. All cell mounts must be steel,
securely welded to frame / cage. No adjustable fuel
cell mounts. Fuel cell vents, including cap vent,
must have check valves. If fuel cell does not have
aircraft style positive seal filler neck / cap system – a
flapper, spring or ball type rollover valve is required.
Fuel lines through driver compartment must run
through metal pipe or metal conduit. One fuel filter
only, cannot be in driver’s compartment. No cool
cans.
18. FUEL: Gasoline only. Racing fuel allowed. No
performance enhancing or scented additives. Fuel
must pass both dielectric meter and chemical test
(see rule book for automatic penalties.)
19. WEIGHT: No weight, and / or loose objects in drivers
compartment, or outside body, and must not be
visible. Weight must be securely mounted to
frame or roll cage and painted weight with car # on it.
Must be attached with at least two, 5” bolts. Car must
weigh at least 3100lbs.
20. BATTERY & STARTER: One 12 volt passenger car
battery only, must be securely mounted between and
above frame rails, and positive terminal must
be covered. Battery must be in marine type case if
mounted in driver compartment. Starter must bolt in
OEM location. Car must have capability of starting
with out being pushed or pulled. Car must leave
initial staging area on demand, un aided , or go to
rear of that race.
21. GAUGES & ELECTRONICS: No unapproved
camera, transmitting or listening devices. No timed
retard control, or digital gauges (including tach).No
electronic monitoring computer devices capable of
storing or transmitting information except analog
tach. No ignition control boxes. OEM ignition only.
all ignition rotors, caps, coils and modules must
remail OEM appearing. No alternators. No electronic
traction control devices.
22. TRANSMISSION/DRIVE SHAFT: All forward and
reverse gears must be operational.
Manual: Must be unaltered OEM three or four speed,
with minimum 10.5 inch steel / organic single disc-
type clutch and steel pressure plate assembly
inside an explosion-proof steel bellhousing- minimum
270 degrees around top of clutch and flywheel area.
No lightweight bellhousing . No hydraulic clutch
release bearing. Steel unaltered flywheel only- 16
pound minimum.
AUTOMATIC: Must be unaltered OEM, with
unaltered OEM pump, original bellhousing and
minimum 10 inch diameter torque converter
containing a minmum of three quarts of fluid. Torqe
converter must have a minimum 0.125 inch plug.
Must have approved scatter shield constructed of
minimum 0.125 by three inch steel, 270 degree
around flex plate. Flexplate must be full, unaltered
OEM, or OEM replacement. No manual bump starts
allowed.
23. DRIVE SHAFT: Steel drive shaft ( minimum 2.5 inch
diameter) and slip – yokes only. Drive shafts must be
painted white. 360 degree driveshaft loop
required and must be constructed of minimum 0.25
inch by two inch solid steel, or one inch tubing,
mounted six inches back from front U-joint.
24 ENGINE COMPARTMENT: Engine must be in OEM
location. Ford metric frames must have back of fuel
pump in front of cross member. Frame and
cross member may not be altered for engine
placement. Engine mount holes cannot be removed
or altered on block. Aftermarket steel engine mounts
allowed. No mid-plate allowed. Engine must be OEM
appearing, must be able to be used in conventional
passenger car without alteration. GM with GM,
Ford , Chrysler with Chrysler. Minimum two-core
radiator, must be mounted in front or engine.
Overflow tubes must be directed to ground. Steel or
aluminum V-belt pulleys only.
25. ENGINE SPECIFICATIONS: Any American make
engine allowed. Steel heads, block and oil pan only.
OEM passenger vehicle production block only.
No GM Bowtie, Ford SVO or Chrysler W blocks. GM
approved block numbers are: 3892657, 3914660,
3914678, 3932388, 3932386, 3956618,
3970000, 3970006, 3970010, 3970014, 10066033,
10066036, 10243880, 14010207, 1401209,
14010287, 14016376, 14016379, 10054727,
14088528, 14088548, 14088522, 14093638,
14101148. Stroke must match block. No 400 or
larger cubic inch parts allowed. Maximum 361 cubic
inches (GM) ; 363 cubic inches (Ford); 370 cubic
inches (Chrysler). Maximum compression ratio is 9.0
to 1, NO tolerance. Compression ratio checked
using Whistler and cubic inches checked using .
pump, OR by visual inspection , such as part /
casting numbers and flat top or dish pistons (track
option which method is used ). Flat top or dish
pistons only. No gas ported pistons. Cylinder heads
must be unaltered approved OEM and minimum
76cc combustion chamber. GM approved head
numbers are; 14079267, 3986336, 3986339,
3986339X, 3986388, 3932441, 376445, 3928454,
3932454, 3876487, 3973487, 3973487X, 3973493,
3951598, 468642, 3300862, 333882, 3998920,
3998991,3998993, 3998997, 3970126,; Ford-no
after market or SVO heads; Chrysler- no after market
or W-2 heads, 360 cubic inch heads only. No porting,
polishing or alterations of any kind to heads or
intake. Must use OEM cast iron two barrel intake ,
No high rise or marine intake manifolds. No roller
cams, No mushroom lifters . Can not alter lifter
bores. OEM style roller tip rocker arms allowed.
Guide plates and screws- in shouldered studs (0.375
Inch max) allowed. No stud girdles. Poly locks
allowed. Unaltered OEM type harmonic balancer
only. OEM type steel or aluminum water pumps only.
Wet sump oiling system only. Accumulator allowed,
must be mounted under hood.
26. PROTEST RULE: All protest's must be made in
writing, by driver ONLY, BEFORE "A" main, with
cash in hand. One item per protest.
***ENGINE PROTEST- $200 cash, $25 to track. If
legal, protested car gets $175, If "illegal", protester
gets $175 back.
***SUSPENSION -$100 cash, $25 to track. If legal,
protested car gets $75, if "illegal", protester gets $75
back.
***ALL OTHERS-$75 CASH, $25 to track. If legal,
protested car gets $50, if "illegal", protester gets $50
back.
(Paris Motor Speedway (PMS), reserves the right to inspect any car at any time. No car will be
considered as having been approved for safety and/or deemed legal by reason of having passed through
inspection, unobserved.)
IF THESE RULES DON'T SAY "YOU CAN", THEN "YOU CAN'T"!
1. SAFETY EQUIPMENT: Rules apply at all times car is
on track. Snell-rated SA2000 or Sa2005 helmet
required. (Effective January 1, 2008, SA95
helmets are no longer allowed). Roll bar padding
required in driver compartment (fire retardant
recommended). SFI approved full fire suit required.
Fire retardant neck brace, gloves and shoes required.
Recommended: Fire retardant head sock and
underwear; head and neck restraints; collapsible
steering shaft. Driver-side window net required,
minimum 16” by 20” ribbon or mesh style and must be
mounted so latch is at top front of window. Minimum
3” wide SFI-approved five point safety belt assembly
required (y-type shoulder harness not allowed), must
be mounted securely to roll cage, recommended
to be no more than one year old. Kill switch required
within easy reach of driver and must be clearly
marked “OFF” and “ON”.
2. FRAME: Any American OEM full body rear wheel
drive passenger car, 1964 or newer, full frame or
unibody. Frame must match body. Minimum 107.5”
wheelbase, maximum 1” difference from side to side.
Rear of frame behind rear tires, no further forward
than 1” behind factory seam, may be replaced in
OEM location with 2” by 3” steel tubing with 0.095”
wall thickness, same length as material removed.
Factory seam must remain visible. Unibodies must
tie rear frame to front frame. Frames may be “X”
braced. No Cameros , Firebirds or Mustangs.
3. ROLL CAGE: Main cage must consist of continuous
hoops, minimum 1.75” O.D. tubing, with wall thickness
of at least 0.095”, low carbon or mild steel
recommended. Four-post roll cage required, front
down bars and rear hoop must be welded to OEM
frame. Driver’s head must not protrude outside cage
with helmet on. Rear hoop must have “X” brace,
consisting of one full horizontal and one full diagonal
bar, minimum 1.25” O.D. with 0.083” wall thickness.
Front down bars must be tied together, passenger
side front down bars must be maximum 11” in from
top of door. Must be minimum 40” between front
and rear down bars at top of door panel. Maximum
41” from top center of windshield to front edge of rear
hoop; maximum 13” to front edge of top halo.
Top halo must be minimum 40” across, outside to
outside. Rear hoop may maximum 12” in from bottom
of operator window. Minimum one cross bar in
top halo. May have maximum two horizontal bars, (in
addition to bar tying front frame horns together) for
radiator protection; must be behind bumper ,
within confines of body, no wider than OEM frame
horns. Rear kickers (down bars) and engine hoop
required, and must be minimum 1.25” O.D. tubing
with 0.083” wall thickness. Fuel cell protection
required, must be mounted frame rail to frame rail, no
higher than fuel cell, inside trunk area with maximum
1.75” O.D. tubing. All bars must be inside body.
4. DOOR BARS: : All door bars and uprights must be
minimum 1.75” O.D. with 0.095” wall thickness.
Minimum three door bars, both sides, parallel to
ground, and perpendicular to driver. Minimum four
uprights tied from frame to top door bar on driver side,
and minimum three uprights on passenger side.
Steel door plates, 18 gauge or 0.049” minimum
thickness, must be securely welded to outside of door
bars on driver’s side. Plate must cover area from
top door bar to rocker panel and from rear down post
to 5” in front of seat. Must be visible for inspection.
5. BODY: All bodies must be unaltered OEM in OEM
location and match frame. Front body mounts must be
visible. Sunroofs and t-tops must be
enclosed. Aftermarket plastic nose pieces allowed,
recommended to match body. No spoilers, hood
scoops. Unaltered OEM STEEL hood and trunk only,
no gutting of trunk. Hood and trunk must be securely
fastened and back of hood must be sealed off from
driver compartment with metal. Hood must be
separate from fenders. Front inner wheel wells may
be removed, rear wheels wells may be removed to
middle seam. Trunk floor directly over rear end
housing must be removed. No overlapping or
shortening of body panels. All glass must be removed,
all windows in body must remain open; maximum 7”
metal sun visor allowed across top of windshield
opening. All doors must be securely fastened.
Fenders and quarter panels may be trimmed for tire
clearance, ONLY. No reflective body panels.
6. DRIVER COMPARTMENT: Minimum three windshield
bars in front of driver. Aluminum high-back seat only
and must be bolted in, using minimum 0.375” bolts.
Driver seat may be no further back than rear edge of
B- pillar. Driver must be sealed off from track,
driveline, engine and fuel cell. Dash not to
extend more than 24” back from center of lower
windshield opening. Dash must be flat,, rear can be
no higher than front, except for cowl in front of driver.
No other interior tin or covers. Inside rear quarter
panels, below window level, may be cut out. Doors
may be gutted. No cutting out of firewalls, roof, floor,
kick panels, rocker panels, except for roll cage
clearance. All holes in firewalls and floor must be
covered with metal. Rear firewall and speaker deck
must be metal and be of OEM design for that make
and model. No mirrors of any kind.
7. FRONT SUSPENSION: All components must be steel
altered OEM, in OEM location and match frame. OEM rubber A-frame bushings only. No spring
spacers, chains or cables. Exceptions are:for 1978-
1987 GM mid-sized metric frame, OEM upper A-
frame may be replaced using aftermarket upper A-
frame (steel only), must display “IMCA approved”
decal on top of rear tube of A-frame; bolt on spindle
savers allowed. Upper A-frame mount must remain
OEM and cannot be moved.
8. STEERING: All components must be steel unaltered
OEM, in OEM location and match frame. OEM
steering column may be replaced with steel
steering shafts, (collapsible steering shaft
recommended). Steel knuckles only. Quick steering is
allowed. Steering wheel and quick release (required)
may be aluminum.
9. SHOCKS: One unaltered steel, non-adjustable, OEM-
mount shock, in OEM location, per wheel. No coil over
shocks, air shocks, remote reservoir
shocks. No Schrader or bladder type valve allowed.
No coil over eliminators. Rear OEM shock location is
4.5” from bottom of housing to center of bolt
hole, and centered on control arm bracket.
10. SPRINGS: One steel spring per wheel only in OEM
location. All coil springs must be minimum 4.5” O.D.
and non-progressive.
11. REAR SUSPENSION: All components and mounts
must be steel, unaltered, OEM, in OEM location and
match frame. OEM rubber control arm
bushing only. Center of rear lower control arm bolt
hole must be 2.25 inches from bottom of housing. No
independent rear suspension. No sway bars,
panhard bars, spring spacers or rubber ,chains or
cables.
12. REAR-END: No Floater rear ends. OEM, or OEM
replacement solid steel axles only .Nine inch ford rear
end allowed, but must be mounted like OEM
rear end (centered) for that make and model. One
inch inspection hole in housing required. No lightened
ring gears. Must be welded spider gears, or mini
spool. No torque dividing differentials.
13. BUMPERS & RUB RAILS: Bumpers must be
approved OEM in OEM location, capped to fender
with steel, welded or bolted. Maximum one inch wide
by two inch tall steel or lexan rub rails allowed- bolted flush to body. Front and
rear tow hooks mandatory
No sharp edges allowed on bumpers, rub rails or
bolts. No bars past outside edge of body other than
rub rails.
14. TIRES/WHEELS: Must use unaltered Hoosier race
tires, G60-15. No softening/conditioning, siping/
grinding or grooving of tires. Wheels must be a
max. of 8” wide. May use bead lock on right side of
car only.1´O.D.steel lug nuts required. No bleed
valve.
15. BRAKES: Steel, unaltered OEM, or unaltered OEM
replacement, operative four wheel, disc (front) and
drum or disc (rear ) brakes, must match frame
or rear end. Full OEM backing plates, no
aftermarket. Master cylinder must be in OEM
location. No antilock brake systems. No aftermarket
brake pedal assemblies, brake shut off or bias
adjuster. Steel brake lines only, must be visible .
Hubs / rotors , axle flanges and drums may be
changed to different bolt pattern and larger studs.
16. EXHAUST: OEM cast iron exhaust manifolds only.
No center dump type manifolds.. Exhaust must
extend past firewall and turn towards ground.
Maximum two inch O.D. exhaust pipes. Must remain
dual exhaust, no crossover or `Y` pipes. No exhaust
sensors. Mufflers recommended.
17. FUEL SYSTEMS: Mechanical OEM type push rod
fuel pumps only. Unaltered OEM two barrel
carburetor for that engine, except: booster I.D. may
be machined to 0.25 inch and venture I.D. machined
1.375 inch on Rochester carburetor. Must remove
carburetor choke plate. Air cleaner top / stud cannot
direct air into carburetor. No top flow air cleaner
housings, cold air boxes or air cleaner duct work.
Maximum 22 gallon racing fuel cell required, must
be in minimum 20 gauge steel container. Must be
securely fasten in trunk above level of OEM trunk
floor, behind rear tires, no further than factory seam
where rear frame rail can be replaced, with minimum
two solid steel straps around entire cell, two inches
wide and .125 inch thick. No fuel cells allowed over
rear end housing. Metal firewall must be between
driver and fuel cell. All cell mounts must be steel,
securely welded to frame / cage. No adjustable fuel
cell mounts. Fuel cell vents, including cap vent,
must have check valves. If fuel cell does not have
aircraft style positive seal filler neck / cap system – a
flapper, spring or ball type rollover valve is required.
Fuel lines through driver compartment must run
through metal pipe or metal conduit. One fuel filter
only, cannot be in driver’s compartment. No cool
cans.
18. FUEL: Gasoline only. Racing fuel allowed. No
performance enhancing or scented additives. Fuel
must pass both dielectric meter and chemical test
(see rule book for automatic penalties.)
19. WEIGHT: No weight, and / or loose objects in drivers
compartment, or outside body, and must not be
visible. Weight must be securely mounted to
frame or roll cage and painted weight with car # on it.
Must be attached with at least two, 5” bolts. Car must
weigh at least 3100lbs.
20. BATTERY & STARTER: One 12 volt passenger car
battery only, must be securely mounted between and
above frame rails, and positive terminal must
be covered. Battery must be in marine type case if
mounted in driver compartment. Starter must bolt in
OEM location. Car must have capability of starting
with out being pushed or pulled. Car must leave
initial staging area on demand, un aided , or go to
rear of that race.
21. GAUGES & ELECTRONICS: No unapproved
camera, transmitting or listening devices. No timed
retard control, or digital gauges (including tach).No
electronic monitoring computer devices capable of
storing or transmitting information except analog
tach. No ignition control boxes. OEM ignition only.
all ignition rotors, caps, coils and modules must
remail OEM appearing. No alternators. No electronic
traction control devices.
22. TRANSMISSION/DRIVE SHAFT: All forward and
reverse gears must be operational.
Manual: Must be unaltered OEM three or four speed,
with minimum 10.5 inch steel / organic single disc-
type clutch and steel pressure plate assembly
inside an explosion-proof steel bellhousing- minimum
270 degrees around top of clutch and flywheel area.
No lightweight bellhousing . No hydraulic clutch
release bearing. Steel unaltered flywheel only- 16
pound minimum.
AUTOMATIC: Must be unaltered OEM, with
unaltered OEM pump, original bellhousing and
minimum 10 inch diameter torque converter
containing a minmum of three quarts of fluid. Torqe
converter must have a minimum 0.125 inch plug.
Must have approved scatter shield constructed of
minimum 0.125 by three inch steel, 270 degree
around flex plate. Flexplate must be full, unaltered
OEM, or OEM replacement. No manual bump starts
allowed.
23. DRIVE SHAFT: Steel drive shaft ( minimum 2.5 inch
diameter) and slip – yokes only. Drive shafts must be
painted white. 360 degree driveshaft loop
required and must be constructed of minimum 0.25
inch by two inch solid steel, or one inch tubing,
mounted six inches back from front U-joint.
24 ENGINE COMPARTMENT: Engine must be in OEM
location. Ford metric frames must have back of fuel
pump in front of cross member. Frame and
cross member may not be altered for engine
placement. Engine mount holes cannot be removed
or altered on block. Aftermarket steel engine mounts
allowed. No mid-plate allowed. Engine must be OEM
appearing, must be able to be used in conventional
passenger car without alteration. GM with GM,
Ford , Chrysler with Chrysler. Minimum two-core
radiator, must be mounted in front or engine.
Overflow tubes must be directed to ground. Steel or
aluminum V-belt pulleys only.
25. ENGINE SPECIFICATIONS: Any American make
engine allowed. Steel heads, block and oil pan only.
OEM passenger vehicle production block only.
No GM Bowtie, Ford SVO or Chrysler W blocks. GM
approved block numbers are: 3892657, 3914660,
3914678, 3932388, 3932386, 3956618,
3970000, 3970006, 3970010, 3970014, 10066033,
10066036, 10243880, 14010207, 1401209,
14010287, 14016376, 14016379, 10054727,
14088528, 14088548, 14088522, 14093638,
14101148. Stroke must match block. No 400 or
larger cubic inch parts allowed. Maximum 361 cubic
inches (GM) ; 363 cubic inches (Ford); 370 cubic
inches (Chrysler). Maximum compression ratio is 9.0
to 1, NO tolerance. Compression ratio checked
using Whistler and cubic inches checked using .
pump, OR by visual inspection , such as part /
casting numbers and flat top or dish pistons (track
option which method is used ). Flat top or dish
pistons only. No gas ported pistons. Cylinder heads
must be unaltered approved OEM and minimum
76cc combustion chamber. GM approved head
numbers are; 14079267, 3986336, 3986339,
3986339X, 3986388, 3932441, 376445, 3928454,
3932454, 3876487, 3973487, 3973487X, 3973493,
3951598, 468642, 3300862, 333882, 3998920,
3998991,3998993, 3998997, 3970126,; Ford-no
after market or SVO heads; Chrysler- no after market
or W-2 heads, 360 cubic inch heads only. No porting,
polishing or alterations of any kind to heads or
intake. Must use OEM cast iron two barrel intake ,
No high rise or marine intake manifolds. No roller
cams, No mushroom lifters . Can not alter lifter
bores. OEM style roller tip rocker arms allowed.
Guide plates and screws- in shouldered studs (0.375
Inch max) allowed. No stud girdles. Poly locks
allowed. Unaltered OEM type harmonic balancer
only. OEM type steel or aluminum water pumps only.
Wet sump oiling system only. Accumulator allowed,
must be mounted under hood.
26. PROTEST RULE: All protest's must be made in
writing, by driver ONLY, BEFORE "A" main, with
cash in hand. One item per protest.
***ENGINE PROTEST- $200 cash, $25 to track. If
legal, protested car gets $175, If "illegal", protester
gets $175 back.
***SUSPENSION -$100 cash, $25 to track. If legal,
protested car gets $75, if "illegal", protester gets $75
back.
***ALL OTHERS-$75 CASH, $25 to track. If legal,
protested car gets $50, if "illegal", protester gets $50
back.
| 2008 HOBBY STOCK RULES: |
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