2024 West Coast Limited Street Rules
All steel car (except those originally manufactured in fiberglass, i.e., Corvette) must retain its original appearance, profiles and must include all body parts while competing with a hood, bumpers etc during all elimination rounds
Any & All ET Extenders (duck bills, pecker extenders will not be allowed)
Composite Hood and Deck Lid Permitted
Front Bumpers can be composite but must maintain factory appearance. Non OEM bumper openings are Not Permitted
No forward facing turbo or blower inlets
Must Retain Factory floors can be notched and patched for roll cage, Must retain factory unaltered firewall, in original location. A cosmetic overlay is permitted
All Windows must be OEM glass and driver’s door window must be fully operational (Trucks only may use Lexan Rear Window to allow Roll Cage to exit the cab)
FRONT SUSPENSION:
All Factory type front suspension only. Coil over shocks are allowed. Aftermarket replacement control arms are allowed. Aftermarket K-Members/Commercially available sub-Frames allowed. (Must have prior approval from tech) Strut towers must be in factory location with factory sheet metal attaching factory frame rail to top of strut tower, can be notched, windowed, or trimmed for header clearance but must maintain factory sheet-metal attachment. Pre-1978 and Older Vehicles: The use of aftermarket bolt-on front suspension kits for engine fitment is permitted. Factory strut/shock towers are optional in pre-1978 vehicles using an aftermarket bolt-on front suspension kit.
K-MEMBER:
Aftermarket factory-replacement-type K-member permitted but must attach to the chassis using only the original factory OEM-type mounting bolts. No part of the K-member may be welded to the chassis.
REAR SUSPENSION:
Factory Style Rear Suspension for make and model of vehicle entered Rear coil overs permitted
Pre 1977 IRS vehicles can be converted to leaf spring style suspension, Cal trac style traction aid will be allowed along with sliders, OEM/ mono/ split mono springs allowed
FRAME & CHASSIS:
Must have factory front and rear frame rail. Front frame rail must extend to front of strut tower. Aftermarket tube front ends are legal ie. Team Z Motorsports mustang tube front ends. Horizontal and vertical notching of rear frame rail is permitted for tire/rear end clearance.
INTERIOR:
Vehicle interior must have Carpet, factory dash and door panels
Rear seat delete is accepted
Must retain passenger seat, mounting of nitrous bottle in passenger seat is accepted
Exhaust: production style muffler with a muffler body of a minimum of 6” in length will be mandatory on all combinations including turbo. ie. any muffler that’s commercially available like a bullet straight through design, not something you made.
INDUCTION:
4150/4500 intake accepted
Forward facing 4bolt intake Accepted
Elbows will Be accepted
ALL power adder combos running a 4500 Carb or 4500 TB BUT MUST ADD 100LBS
Nitrous Big Blocks must retain Factory Valve Angle for example BBC must retain 26*
Nitrous Small Blocks can use any inline “Non-Billet” Cylinder Heads (No Canted Valve)
No after-market Aluminum or Billet Blocks Permitted
No Methanol
No Bull Horns or Zoomies (exhaust can exit the fender, side of front bumper or under the vehicle but must not protrude more than 2-inches from the point of exit) No Hood Exit Exhaust
Hood Scoops for Nitrous or N/A combos are limited to clear lexan All entries must have a production muffler.
SB Power Adder Limited to 440 cubic inch (NA permitted up to 470 cubic inch)
Twin turbo engine cubic inch limitations are in the turbo charger rules
BB NA Limited to 620 cu in
BB NOS limited to 572 cu in (Includes BOP – Mopar entry)
NO MULTIPLE POWER ADDERS OR NITROUS TO SPOOL
NITROUS:
Plate System: Any conventional 4150/4500 single stage or cross-bar single stage plate nitrous system with a maximum of four spray bars (two nitrous & two fuel) permitted
Nitrous outlet kraken plates, stinger style and other billet unconventional plates will not be allowed.
255/60R15 Tire with a 4500 Plate will be allowed to run with no Penaties as long as CARB or TB is 4150, 100Lb Penalty if 4500 TB or 4500 Carb is used
Single 10lb nitrous only, dual bottles not permitted.
Single forward facing FI plates accepted max 102mm
Single .125 max nitrous solenoid size
Nitrous BB -4 feed line maximum
Nitrous SB -6 feed line maximum
SUPERCHARGER:
Maximum supercharger sizes D1, V-7/V30 JTB Trim, NOVI 2000, Kenny Bell 3.6, Whipple 3.4, YSic, D1x.
Roots 6-71 blowers must be off the shelf street style – B&M type/TBS) Sb w/ single carb on gas only.
TURBOCHARGER:
NO BILLET WHEELS
Twin 60mm turbos Allowed
60x92 compressor wheel and 80x73turbine
No Integrated nut on compressor wheel
388cid max for twins
Mod motor no more more than 302 cid with twin turbos
Max cast turbo size 76mm measured tip to tip. Compressor inducer will not exceed 76 mm
Compressor Exducer will not exceed 102 mm
Compressor Exducer extended tip may not be larger than 108mm measured with a Pi Tape. Caliper measurements will not be accepted for Tip to Tip specs
Turbine will be 96 mm X 88 mm
The Borg Warner S400SX4 S475 1.32 a/r with T6 flange fits into this category
True North turbo makes a Class legal 76mm turbo also
Air to Air intercooler only
Traction Aids:
Driveshaft sensor, factory speedo and GPS speed are the only means of speed and acceleration sensors allowed
Shock sensors, track temp sensor, rideheight sensor, and G meters are Not Permitted in qualifying and Competition. Prohibited sensors must have a visible plug within 2 feet from the sensor that will be disconnected and have a bright colored Tape over the unplugged connector. must be visible for Limited street tech Official to clearly see it is not hooked up
TIRES:
Max tire size 255/60R15 ET STREET R ONLY
Weights:
Naturally Aspirated:
SB naturally aspirated – 2600
BB NA 3000 (+100 lbs. for big chief style head)
Nitrous Oxide:
SB nitrous - 8.2 deck 2750
SB nitrous - 2850
BB nitrous 3300
BOP Mopar 3150
Forced Induction:
SB cast turbo 76mm - 3200 SB
Twin Cast 60mm - 3350
SB D1, NOVI 2000, Kenny Bell 3.6, Whipple 3.4 – 3100
SB V7/V30 JTB Trim - 3125
SB D1x - 3250
SB YSI cast – 3250
Deduct 50lbs no rear coil overs
Add 50lbs for Mod Motor/coyote
Add 25lbs for Throttle body larger than 92mm round or Ford style oval Mono blade
****WEIGHT CAN BE ADDED OR DEDUCTED FROM ANY COMBO AS PER TRACK OFFICIAL FROM RACE TO RACE****
RACE DAY POLICY'S FIELD SIZE & LADDER:
WC Limited Street will run on the 1/8th mile .400 Pro Tree and qualify for a 16-car field (with Alternates) 16-car Pro Ladder. If less than 16 cars enter, we will follow the NHRA "Official Ladder" for the field size. Auto-Start is ON
TOW BACK & TOW VEHICLES:
All WC Limited Street entries Must drive to the staging lanes Under their own power. Towing back to the pits Permitted witha golf cart or other similar small tow vehicles. All tow vehicles will be subject to search by a MRP Official at any time
After each qualifying and elimination pass, all WC Limited Street cars must stop and weigh at the track scales. If you lose in eliminations, and your opponent fails to make weight you will be reinstated into the eliminations only if you made minimum weight requirements. If both cars failed to make minimum weight, both cars will be disqualified. It is the driver's responsibility to verify with each track scale, the weight of his/her car prior to each race day. There will be a 5lb error factor allowed.
ALTERNATING LANES DURING QUALIFYING:
Each WC Limited Street driver must alternate lanes during qualifying. If you choose to ignore this rule, your second consecutive pass in the same lane on the same day will be disqualified.
AUTO-START:
The Auto-Start System will be turned on with a 7-sec timeout BYE-RUNS: All vehicles must take the Tree & Scale for opportunity at Lane-Choice for next round
RULE CONTESTING:
If you think your competitor is not legal within the rules/weights claimed you may contest for $500 if the Competitor is found to be illegal they will be DQ'd and your $500 will be returned. If they are legal they will Receive the $500 Contest Fee.
If you have questions pertaining to West Coast Limited Street Rules please email Info@missionraceway.com