Sorry forgot about the F being FWD. Let me go back through my manual and I'll get back to you. I'm pretty positive SM classing is for any modification though, this is what I was told I would fall into if I added a SC or TC to my car which is why I decided against it. I'll be back shortly since I have the manual on my computer here at work.
---------- Post added at 12:19 PM ---------- Previous post was at 11:51 AM ----------
Yeah, totally my bad. You still fall in the Street modified but not SMF, SSM (super street modified) or the XSM (preparedSSM)
Here are the specifications:
uper Street Modified Class (SSM)
All two-seat cars not excluded below.
All SM eligible sedans/coupes excluded from SM.
All SM eligible vehicles.
Lotus (all except Elise, Exige, & Esprit)
Vehicles not meeting minimum weights
Minimum Weight Calculations (without driver):
FWD: 1350 lbs + 125 lbs per liter
RWD: 1600 lbs + 200 lbs per liter
AWD: 1600 lbs + 300 lbs per liter
Rear wheel weight greater than 51%:
+25 lbs per liter
Tire width 275mm or less (all): -200 lbs
Regardless of the weight formulas above, no car will be required to
weigh more than 2900 lbs.
Prepared esentially is above and beyond modifications like mods to the body, adding a fuel tank, etc.
---------- Post added at 12:22 PM ---------- Previous post was at 12:19 PM ----------
2. SUPER STREET MODIFIED (SSM):
a. All two-seat cars, including the types of cars listed above in
16.0.C.1.b, which are not excluded below.
b. All SM eligible sedans/coupes excluded from SM for failure to
meet weight requirements.
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c. Excluded Vehicles: Lotus (all except Elise, Exige, Esprit), two-seat
cars not eligible for the Street Prepared category.
d. Included vehicles: Porsche Carrera GT
3. STREET MODIFIED FWD (SMF) – Supplemental Class
All front-wheel-drive vehicles
See Sections 3.8 and 8.3 for documentation requirements.
16.1 ALLOWED MODIFICATIONS
A. All Stock, Street Touring, and Street Prepared category modifications
are authorized. Except as noted by these rules and the referenced
rules, vehicles must be as originally delivered including all road-going
components such as lights, wipers, interior, heater, etc.
B. Competitors may pick and choose between all Stock, Street Touring,
Street Prepared, and Street Modified category allowances when preparing
an SM car. Apparent conflicts between inherited rule sets from
16.1.A shall not prohibit any specific inherited allowance. Allowances
inherited from 16.1.A may not incorporate SM-specific allowances.
Foreign spec parts may not be used to substitute for parts which are
required to remain stock.
C. Brakes, including calipers, caliper mounts, disks, drums, lines, backing
plates, pedals, boosters, master cylinders, handles, ABS systems,
proportioning valves, etc. are unrestricted. Brake rotor/drum
friction surfaces must be 100% ferrous metallic. Carbon or ceramic
composite brake components (except pads) are expressly prohibited.
Standard parts, per 12.4, are exempt from this restriction. A
functional, redundant emergency (parking) brake must be present.
D. Drivetrain and related components (induction, ignition, fuel systems,
etc.) are unrestricted except for the following limitations:
1. Engine block must be a production unit manufactured and badged
the same as the original standard or optional engine for that model.
Badges that exist as marketing aliases for the manufacturer
will be recognized as equivalents. Swaps involving makes related
only at a corporate level are not recognized as equivalents. Models
produced as a joint venture between manufacturers may utilize
any engine from any partner in the joint venture, provided that an
engine from the desired manufacturer was a factory option in that
particular model (e.g. Eagle Talon available originally with either a
Mitsubishi or Chrysler engine, may use any motor from Chrysler
or Mitsubishi). This allows engine blocks manufactured as production
units for sale in other countries such as Japan or Germany.
2. Maximum engine displacements per class are specified in Appen
3. Fuel System
a. Any fuel line(s) may be used. All non-standard fuel line(s) passing
through the passenger compartment shall be made of met16.
Street Modified Category — 109
al, metal braided hose, or equivalent (e.g., Nomex, Kevlar, or
nylon braided hose) with AN Series threaded couplings; or entirely
covered and protected with a metal cover.
b. Any fuel pump(s), filter(s) and pressure regulator(s) may be
used. Such components may not be located in the passenger
compartment, but their location within the bodywork of the car
is otherwise unrestricted. If a mechanical pump is replaced,
a blanking plate may be used to cover the original mounting
c. A cool-can, not exceeding one gallon in volume, may be used.
The cool-can may not be installed in the passenger compartment.
d. The fuel tank may be modified or replaced. If the fuel tank is
modified or replaced, the following restrictions apply:
1. No part of the fuel tank or fuel cell shall be closer than 6 inches
to the ground unless enclosed within the bodywork and
mounted above the floor pan. A metal bulkhead is required
that provides total separation between the driver compartment
and the compartment containing the fuel tank and/or
filler/neck. This includes fuel tanks that are flush mounted
with driver compartment panels or otherwise exposed to the
driver compartment. Fuel filler doors in the driver compart
must be positively fastened (non-metallic fasteners are
For the purposes of these rules, a fuel tank consisting of a
structure containing a fuel bladder is considered to be the
entire fuel cell, including the containing structure. The containing
structure of a fuel cell does not qualify as a bulkhead.
A separate metal bulkhead must isolate the fuel cell from the
2. Internal body panels may be modified to accommodate the
installation of the fuel tank as long as such modifications
serve no other purpose. In the event installation includes encroachment
into the driver’s compartment, a metal bulkhead
shall prevent exposure of the driver to the fuel tank.
3. Fuel tank breathers shall not vent into the driver/passenger
4. Minimum capacity of a non-standard fuel tank/cell shall be
no less than five (5) gallons.
Motor and drivetrain mounts are considered part of these allowances,
and any material is permitted. The allowances of 16.1.P
may be used to affix brackets, but these brackets shall serve no
purpose other than engine and drivetrain mounting (e.g. they
may not provide chassis stiffening).
110 — 2012 SCCA® N
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E. Suspension components are unrestricted as long as they use the
original attachment points. For the purposes of this rule, “suspen
is defined as any item that is designed to move when a wheel
is deflected vertically. This includes shocks and struts, control arms,
steering knuckles, uprights, etc., but not tie rods, steering racks, and
subframes. In addition, shock absorber/strut upper mounts are to be
considered suspension components.
F. Steering modifications are permitted as follows:
1. Steering components, including the steering rack and/or box, tie
rods, idler arms, power assist devices, and related components,
may be replaced, added, moved, or removed. The steering col
within the passenger compartment, is specifically excluded
from this allowance. This does not permit removal or modification
of column-mounted accessories. Wheel-mounted electrical
switches such as those for the horn, radio, cruise control, or shifter
may be relocated and/or replaced, or eliminated.
2. Rear-steer devices may be replaced with solid links.
3. Supplemental steering gear boxes, a.k.a. steering quickeners, are
allowed as long as they are mounted in accordance with 16.1.F.1.
4. Steering wheels and associated mounting hardware may be re
This does not permit removal or modification of the steering
column or column-mounted accessories. OE wheel-mounted
electrical switches such as those for the horn, radio, cruise control,
or shifter may be relocated and/or replaced, or eliminated.
G. Subframe connectors are allowed as per Street Prepared (15.2.E).
H. Subframe bushings may be replaced with bushings of any material
as long as they fit the original location. Offset bushings may not be
I. Front hoods (engine covers), engine covers, trunk lids and hatches
not containing glass, front fenders, rear fenders not part of chassis
structure (unibody), front & rear facias, and side skirts may be
modified or replaced, and may be attached with removable fasten
Associated hardware including latches, hinges, window washer
nozzles, and hood liners may be modified, removed, or replaced.
This does not permit removal of the remainder of the window washer
system. Fenders may be flared as per Street Prepared. Non-metallic
fender liners may be modified, replaced, or removed.
J. Tires legal in Stock, Street Touring, or Street Prepared are permitted.
K. Rear passenger seat(s), including restraints and associated hardware
may be removed.
L. Aerodynamic Aids: Wings may be added, removed, or modified. Non-
OE wings may only be attached to the rear deck/hatch area behind
the centerline of the rear axle. The total combined surface area of all
wings shall not exceed 8 square feet as calculated per Section 12.9.
The number of wing elements is limited to 2.
treet Modified Category — 111
Wings, and any component thereof, may not extend beyond the ve
width, as defined by the outermost portion of the vehicle doors,
less mirrors, door handles, rub strips, and trim. In addition, no portion
of the wing or its components may be more than 6” forward of the
rear axle, more than 0” beyond the rear most portion of the body
or more than 6” above the roofline of the vehicle, regardless of
body style. For convertibles and roadsters, the highest portion of the
windshield frame will be considered the highest portion of the roof.
Reinforcements to the wing mounting area may be used, but may
serve no other purpose. Body panels to which a wing mounts must
remain functional (e.g. trunk lids and rear hatches must open). Wing
endplate surface area is limited to 200 square inches each and lim
to a maximum of two.
Except for standard parts, wings designed to be adjustable while the
car is in motion must be locked in a single position.
Canards are allowed and may extend a maximum of 6 inches forward
of front bodywork/fascia as viewed from above. No portion of
the canard may extend past the widest part of the front bodywork/
fascia as viewed from above. Canard area will be measured in the
same manner as wings using 12.10. Canard area may not exceed
15% of total wing allowance. The sum of canard area and rear wing
area may not exceed the total wing allowance.
M. Front splitters are allowed and shall be installed parallel to the
ground (within +/-3 degrees fore to aft) and may extend a maximum
of 6 inches from the front bodywork/fascia as viewed from above.
Splitters may not extend rearward past the centerline of the front
wheels. No portion of the splitter may extend beyond the widest part
of the front bumper/fascia as viewed from above.
N. T-Tops, targa tops, sunroofs, moonroofs, and similar roof-mounted
panels may be removed/replaced with alternate panels provided that
the area of interface is limited to the original perimeter of the t-top,
sunroof, etc. or utilizes the OE panel mount points, and that the contour
of any replacement panel surface does not vary from the contour
of the part being replaced by more than 1 inch in any direction. The
material used to construct the alternate panel and the method used
to attach it to the interface is unrestricted. Any actuation mechanism
and the associated wiring, if any, may be removed.
O. Radio/Stereo and airbag equipment and/or its component parts, including
wiring, control modules, antennas, amplifiers, speakers and
their enclosures, etc. may be removed provided the part added, removed,
or replaced serves no other purpose. Any visible holes that
result from the removal of equipment must be covered with a cov
of unrestricted material. Covers may be used to mount gauges,
P. Any minor modification, intended to allow or facilitate any allowed
modification, is permitted as long as it does not provide any intrinsic
112 — 2012 SCCA® N
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performance benefit in and of itself, does not provide a weight re
of more than 1 lb, and is not explicitly prohibited elsewhere
within these rules.
This rule is intended to allow minor notching, bending, clearancing,
grinding; the drilling of holes; affixing, relocating, or strengthening of
brackets; removal of small parts, and similar operations performed
in order to facilitate the installation of allowed parts or modifications.
Minor strengthening, without relocation, of original chassis/suspension
pickup points is allowed. Examples include welding washers
restricting control arm mounting bolt movement, local reinforcement
of control arm chassis mounts, etc.
Competitors are strongly cautioned to make the minimum amount of
modification required to affix a given part, and to not make unduly
tortured interpretations of this rule. Modifications to the firewall in
order to allow for increased engine setback, and any modification
that changes the location of a suspension pickup point, are explicitly
forbidden. Plastic under-trays and covers below the vehicle may be
removed or modified as necessary to facilitate other compliant modifications,
but not added or enlarged.
Q. Ballast may be added. Ballast must be a maximum of 50 lbs. per
segment. It must be securely mounted
within the bodywork.
R. OE side mirrors may be replaced by aftermarket units, provided they
mount in the same location, perform the same function as the OE
mirrors, and have a reflective surface area greater than 15 sq. in.
S. OE pop-up headlights may be replaced with static headlights, provided
the replacement units are intended for automobile use on public
roads as a primary means of illumination, and retain high and low
beams as originally provided by the manufacturer. Minor repositioning
of the headlights is allowed to accommodate the alternate headlight,
but the unit may not be relocated and the repositioning may
servce no other purpose. All associated hardware may be removed,
replaced or modified.
T. Alternate subframes are allowed to facilitate engine mounting only.standard unit.
Suspension pick-up points on the subframe must retain standard geometry.
Weight of the subframe must be equal or greater than the
---------- Post added at 12:25 PM ---------- Previous post was at 12:22 PM ----------
BS is for stock class only. You are well beyond a stock class!!!!