2017 Class Rules

MagnaFuel XDR / TT5 is a heads-up class for all types of vehicles. Rear suspension may utilize ladder bar or four-links (no full tube chassis). Legal combinations include the use of nitrous oxide, supercharger, turbocharger and naturally aspiration at different weight breaks for parity. All entries must compete on a M/T Radial Tire or a 29.5x10.5 Slick or smaller (height & width)

XDR / TT-5 will run on a 1/8 mile format with a 32-car qualified field with alternates...

BODY: The car must retain its original appearance and profiles. Aftermarket fiberglass or carbon fiber replacement panels are limited to hood, front fenders, doors, deck lid and bumpers. One piece front ends are permitted, but must retain factory head light, grille and bumper appearance.

BRACKET RACING AIDS: The use of bracket racing aids such as optical sensors, delay boxes, stutter boxes, and throttle stops are not allowed.

FIREWALL: Must retain in original factory location, and be constructed out of sheet-metal. Notching of factory firewall for valve cover clearance is allowed.  Firewalls that are moved back from the factory location will receive a 50lb weight penalty..

INTERIOR: Dash board must be factory appearing and in stock location.

FRONT SUBFRAME: All sub framed or full framed cars must retain complete stock front subframe from firewall forward. Frame connectors or rear frame rails may not pass engine firewall, except for the following exceptions. The 62-67 Chevy II's and 64 1/2-68 Mustangs and similar cars with bolt-on front K-members, must retain stock or aftermarket bolt-on front subframe. The subframe must be a bolt on (not welded, unless kit is OK by PSCA officials) to factory mounting location. Frame connectors or rear frame rails may pass firewall location, but not exceed where original front subframe mounts to the body. All late model Mustangs must retain factory front subframe from firewall forward. Stock or direct fit aftermarket K-members are permitted, but must be bolted in factory location using factory bolt holes. Cross members on all front sub frames may be altered or removed for oil pan clearance.

FRONT SUSPENSION:
All cars must retain stock suspension, aftermarket tubular control arms, coil over kits, or OEM front strut retrofits are permitted. Replacement Bolt-on Lightweight K-Members are legal, but must be a direct bolt on, no welding modifications permitted. Stock wheelbase will be enforced on all vehicles. You can weld tubes from your roll cage to the front suspension.

**The only front suspension bolt-on kit deemed legal by the PSCA are the CHRIS ALSTON, AJE, HEIDTS, Smith Racecraft and *FATMAN bolt-on kits (for 62-67 Nova's, 67-69 Camaro's & early Mustangs) Total Control Products Coil Over Conversion Kits, and The Rod & Custom Motorsport Mustang II kit for 64 1/2-66 Mustang, Part #RC-106,  FDC Gen II Chassis & Skinny Kid front end kits for late model Mustangs.... Kits must be installed as instructed and not modified.

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: No Restrictions

ENGINE: Cubic inch limits. (see weight guide below)

ENGINE BLOCK: No Restrictions

OIL-RETENTION DEVICE: All Xtreeme Drag Radial cars must utilize an NHRA-accepted lower engine oil-retention device; may use a belly pan in lieu of a device attached to the engine. The belly pan must extend from framerail to framerail and extend forward of the harmonic balancer and rearward of the flywheel and must incorporate a minimum 2- inch-high lip on all sides. A nonflammable, oil-absorbent liner mandatory inside of retention device.

ENGINE MOUNT LOCATION: The maximum allowable engine setback from the center line of the number-one spark-plug hole to the center line of the front spindle is 2 inches, except in those vehicles in which the engine was factory installed at a distance greater than 2 inches behind the spindle. In both cases, the engine must be mounted in front of the Original Factory Firewall Location. For those cars with the firewall moved back and your engine is more than 2" and Less than 4" from the center line of the number-one spark-plug hole to the center line of the front spindle, you will be penalized an additional 50lbs

CYLINDER HEADS: Any cylinder head is allowed if only 1 spark plug per cylinder is functional.

EFI: Any EFI system is permitted

FUEL: Gasoline & Alcohol only (No Nitro) The PSCA reserves the right to check gasoline at any time during competition. The addition of chemical additives intended to alter the makeup of the gasoline for increased performance is strictly prohibited. During fuel check, a competitor must identify the brand of gasoline being used. The sample will be considered illegal if it does not match the baseline results (ex. color, dielectric reading +or-.2, and chemical tests) logged by SCSN. Failure to pass fuel check is grounds for dis allowance of the run during competition and disqualification from the event during eliminations.

NITROUS: Any nitrous combo is legal. Water Injection is legal

SUPERCHARGER: Roots up to a 14.71 (No Screwchargers) See weight adds.

TURBOCHARGER: Twin Turbo 88mm Max ea.

REAR TIRES: Mickey Thompson 3558, 3062r, 3362r or 3654x Radials / 3062s, 3055s or any 28x10.5 or shorter/narrower slick

WHEEL BASE: Must retain stock wheel base with a maximum variation right to left and front to back of one inch.. 

XDR/TT-5 WEIGHT GUIDE

Base Weight   (All weights are race-ready, car with driver)

4 Cly W/Any Power Adder............................................2350 lbs

V/6- W/Nitrous...............................................................2200 lbs

V/6 W/Turbo or Blower.................................................2500 lbs

I/6 W/Turbo or Blower & Nitrous...................................2600 lbs

Small Block W/Nitrous..................................................2250 lbs

Small Block W/Roots Blower........................................2800 lbs

Small Block W/Blower (Up to 4.5 Inducer Diameter)...............2800 lbs

Small Block W/Blower (4.51- 4.84 Inducer Diameter)..............2900 lbs

Small Block W/Blower (4.85 to 5.47 Max Inducer Diameter)....2950 lbs

Small Block W/Single Turbo .........................................2900 lbs

Small Block W/Twin Turbo ............................................3050 lbs

Big Block W/Nitrous (up to 570ci)..................................2650 lbs

Big Block W/Nitrous (571 to 600ci).................................2700 lbs

Big Block W/Nitrous (601 to 650ci).................................2750 lbs

Big Block W/Nitrous (651ci & up)...................................2800 lbs

Big Block Roots SC........................................................3100 lbs

Big Block Centrifugal SC (up to 600ci)...........................3100 lbs

Big Block Centrifugal SC (601ci & up)............................3200 lbs

Big Block Single Turbo (up to 600ci)..............................3100 lbs

Big Block Single Turbo (601ci & up)...............................3200 lbs

Big Block Twin up to 88mm Turbo .................................3400 lbs

 

WEIGHT ADDS & BREAKS:

Add 50 lbs. For Non-Factory Location Firewall

Add 50 lbs. For Engine Set-Back over 2" but not to exceed 4" (#1 Spark Plug behind Front Spindle Centerline)

Add 100 lbs for M/T 3763x (315 Pro Radial)

Deduct 50 lbs. For Using a "Blo-Thru" Carb(s) on a Boosted Combo

Deduct 50 lbs. For Stock Suspension (All attaching points in stock locations - excluding shocks)

Deduct 50 lbs. For Using 275x60x15 Drag Radial or 28x10.5 Slicks

Deduct 100 lbs. For Using 235x60x15 Drag Radial or 26x8.5 Slicks

Deduct 200 lbs. For Mod Motor Combo's

Deduct 400 lbs. For No Power Adder (off Nitrous Combo's weights)

 

MagnaFuel XDR/TT5  Required Decals:

CLASS SPONSOR DECAL: "MagnaFuel" decal must be installed on base of windshield on the passenger side. (Bottom left hand side when looking at front of vehicle windshield) 

PSCA SERIES SPONSOR DECAL: "Chassisworks" decal must be installed on base of windshield on the drivers side. (Bottom right hand side when looking at front of vehicle windshield)

PSCA/RMSS SERIES SPONSOR DECAL: Paddock Imports Decal must be placed on both left & right sides of race car in a highly visible location

 Decals will be available during registration at the PSCA Event Trailer

 

Contingency Program & Contingency Decals:

All contingency decals may appear anywhere on the vehicle in a clear and organized fashion. Contingency decals may not be overlapped or modified. Most decals are available at the PSCA Event Trailer, but in the event the PSCA does not have the decals in stock, it is the racer's responsibility to obtain the proper decals to be eligible for the Contingency payout.

 

RACE DAY POLICY'S

FIELD SIZE AND LADDER: XDR / TT5 will qualify on a 32-car field and will be put on a 32-car Pro Ladder. If less than 32 cars enter, we will follow the NHRA "Official Ladder" for the field size.  

ALTERNATING LANES DURING QUALIFYING: Each XDR / TT5 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, and run down the 1/8 mile and scale

Once Your Vehicle Passes Tech Inspection, There Are No Refunds!!!

 

QUESTIONS??

Mel Roth mel@pscaracing.com or Call/Text 1-661-917-3078

PSCA Race Day Rules and Procedures...Click Here

  All drivers and vehicles must meet current NHRA and track requirements.