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Updated Street stock rules posted here at request of Chris Saathoff


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2016 CENTRAL TEXAS SPEEDWAY SUPER STREET STOCK RULES

 

Cars and Frames

1. Any stock American production vehicle with a minimum wheel bases of 108 inches.
2. Tube rear clips will be allowed. (2x3 rectangular tubing on unibodies)
3. OEM replacement Camaro clip will be allowed, Lower pick up points and steering box and
idler arm must be in stock location. Clip must be built from 2x4 rectangular tubing, 25 pounds of
weight must be bolted to crossmember.
4. Drivers side door bars will be plated with a minimum 1/8 inch steel plate from top door bar to
bottom.

 

Wheelbase
1. Must be a minimum of 108", with a 1/2" tolerance.

 

Track Width
1. 67" Maximum measured with referee, no tolerance. (Measurement will be 65" on referee due
to 8" wheels)

 

Front Suspension
1. All suspension parts will be factory stock and in stock location for make and model.
2. Upper control arms may be replaced with aftermarket steel a-frames.
3. Upper control arm mount may be replaced but can only have 1 mounting point, no slugs or
adjustable upper mounts.
4. Lower control arms must be factory stock and unaltered for make and model of front clip.
5. Spindles may be changed as long as left and right match and are factory stock.
6. Weight jacks are allowed and shocks may be relocated.

 

Rear Suspension
1. Must use rear suspension style for make and model of front clip.
2. Weight jacks are allowed.
3. 3 link suspensions must use stock for front clip lower control arms and third link must be solid
with no springs or rubber bushings.
4. Leaf springs must remain in stock location. Adjustable shackles and sliders are allowed but
front mount must be single hole.
5. Rear end must be in stock location, + or – ½ inch.
6. 9” Ford floaters are allowed.
7. Stock OEM posi-trac or steel unlightened spools Minimum 6.1 pounds are allowed. No
lockers or gleason type rear ends. No polished gears.
8. No aluminum allowed on or in the rear end.
9. No Chrysler style leaf spring unless Chrysler front clip.

 

Shocks
1. Shocks must be steel and nonadjustable.
2. No gas pressurized shocks of any type.
3. No bump stops of any type.
4. All shocks are subject to claim of $100.
A. Claim must be presented to tech director within 10 minutes of checkered flag.
B. Claim must be legibly written on paper with car number and which shocks are being
claimed.
C. $100 per shock must be presented with letter in cash.
D. Refusal of claim is automatic disqualification and loss of season points.

 

Springs
1. Springs must be in stock location
2. Springs will be a minimum of 5” outside diameter.
3. Racing leaf springs are allowed in stock location.
4. No coil binding.

 

Steering
1. All steering parts will be stock OEM type, in stock location for clip.
2. Drag link, idler, pitman arm, and tie rods must be stock OEM type.
3. No rack and pinions.
4. AFCO centrlink part# 30271 is allowed.

 

Sway bars
1. Must remain in stock location and be OEM. Cannot be OEM replacement.
2. Sway bars may be adjustable but only from under the hood compartment.
3. No splined bars.

 

Transmissions
1. Standard or automatic is allowed.
2. Automatic must have 11” minimum working fluid type converter.
3. Standards will have no more than 4 forward gears. 2 forward and 1 reverse gear must be
4. No gears may be removed from transmissions.
5. Transmissions may not be lightened or polished.
6. Clutch and flywheel will be a minimum of 10 inches and steel.
7. Must use steel bellhousing or SFI approved scattershield.
8. Engine option #3 may use minimum 7.25" mini clutch.

 

Driveshaft
1. Will be steel and painted white.
2. Driveshaft will have a minimum of 2 steel 360 degree loops.

 

Brakes
1. Must have 4 wheel single piston working brakes.
2. Calipers must be cast iron and fit in stock mount without modification.
3. Maximum piston size 2.875. Minimum piston size 2.00.
4. Drum brakes allowed on rear.
5. Rotors must be steel and round with no lightening

 

Wheels
1. All wheels must be 15”x 8” steel racing wheels.

 

Tires
1. Will be the Hoosier F-75.
2. No treating, soaking, chemically altering, cutting, shaving, or grinding of any kind will be
allowed.

 

Bodies
1. Any body is allowed.
2. Spoiler can be a maximum 6” x 56” with forward bracing.
3. All other aftermarket spoilers can be maximum 5” x 60” with no forward bracing.
4. Stock Camaro spoilers are allowed on stock Camaro bodies.
5. Outlaw type bodies are allowed, must use manufactured nose dirt or asphalt style. Must
maintain 46” roof height 10” behind windshield, maximum 80” width, and maximum 36” quarter
panel height.

 

Heights
1. Body and chassis will maintain a minimum 4 1/2” ground clearance.
2. Fuel cell will maintain a minimum 8” ground clearance.

 

Interior
1. If using stock firewall it must remain in stock position.
2. If using stock floor pan it must remain stock to transmission tunnel and from rear of 4 point
cage to firewall.

 

Exhaust
1. Must extend past driver and turn down or exit the side of vehicle.
2. Headers must be chassis style.
3. No stepped headers.

 

Fuel System
1. No electric fuel pumps.
2. Maximum fuel cell size is 22 gallons.
3. Fuel cell must be encased in metal container.
4. If fuel line is routed through the drivers compartment it must be encased in steel conduit.

 

Ignition
1. Will be stock appearing type HEI distributor.
2. No ignition boxes.

 

Electrical
1. Only 1 12v battery allowed.
2. If the battery is located in the drivers compartment it must be fully enclosed in a battery box.
3. All cars must have a clearly visible and accessible master disconnect switch.

 

Engine Location
1. #1 spark plug must be even with left front upper ball joint.

 

Engine Options

1. GM maximum 350 maximum 360 C.I. OEM cast iron straight plug heads or World Products
straight plug S/R heads with a minimum 62 cc combustion chamber. Straight plug aftermarket
heads will be allowed with a minimum 72cc combustion chamber. Maximum vale size on all
heads is 1.94 intake and 1.50 exhaust. May use stud mount full roller 1.6 or 1.5 rocker arms.
Maximum valve lift at the valve will be .540. 2 or 4 valve relief pistons that do not protrude out
of block . Must use stock OEM cast iron 4bbl intake or cast iron Chevy marine intake, or
Edelbrock #2101 or 2701 intake.
2. Stock small block 350 bored no more than 0.060 with only stock OEM 68 cc straight plug
heads with stock diameter valve springs. Max valve size 1.94 intake, 1.50 exhaust. Must use
stock 1.5 no roller tipped or stamped 1.5 roller tipped rockers. Must use 4 valve relief pistons
that do not protrude out of the block. Intake can be Edelbrock #2101 or 2701, stock OEM cast
iron 4bbl or Chevy Marine cast iron 4bbl.
3. GM 350 crate engine # 88958602 or #19258602 with no modifications and all tolerances must
remain within the specifications as published by GM for the crate engine.
NO PORTING OR GASKET MATCHING OF ANY KIND IS ALLOWED ON ANY PART
OF ANY ENGINE! NO ROLLER CAMSHAFTS! ALL ENGINES MUST USE STOCK
STROKE CAST OR STEEL CRANKSHAFTS WITH NO LIGHTNING OR KNIFE
EDGING!

 

Carburetor and Spacer
1. Engine option 1 or 2 will use a box stock Holley #4412 500 cfm 2bbl with a maximum 1” 2
hole carburetor spacer.
2. Engine option 3 will use a box stock Holley 4150-8054 650 cfm 4bbl with a maximum 1” 4
hole carburetor spacer.

 

Weight
1. All cars will start with a base weight of 3250 pounds.
2. Maximum left side weight is 55%.
3. Maximum rear weight is 49%.
4. 1 pound per lap for burn off allowed after race.

 

Penalties and Deductions
1. Engine Option #2 – 50 pounds. Engine Option #3 – 225 pounds factory sealed, -200 if rebuilt
but must maintain all specs of the circle track crate engine rebuild manual.
2. Shocks mounted in stock location – 75 pounds
3. Drum brakes on rear – 25 pounds
4. Stock firewall and floor pan 56% Left side weight.
5. Stock steel OEM body Including front fender, roof, quarters, and deck lid -50
6. Stock OEM Swaybar, Not OEM replacement. -25 pounds
7. All tube chassis from front clip back +75 pounds.
8. Victor Jr. 4bbl intake +50 pounds.
9. Victor Jr. 2bbl intake +75 pounds.
10. 2.02 intake, 1.60 exhaust valves +25 pounds.
11. After market OEM replacement clip + 25 pounds. (25 pounds must be mounted to
crossmember)

 

All cars must declare at tech through filling out tech sheet proper weight declaration before end
of practice.

 

Tech director and race director reserve the right to adjust rules at anytime in fairness of
competition.

 

To download these rules as a PDF File, click here >>>> 2016 CTS Super Street Stock Rules updated.pdf

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