MagnaFuel XDR 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 12-inch-wide or smaller M/T Radial Tire (including

the 3763X 315 Pro Radial at a 100lb weight add) or a 29.5x10.5 or smaller Slick. If you currently run the 2019 LDR

(Limited Drag Radial) Series, your car/chassis is considered legal if you follow SCSN XDR weight & power-adder

guidelines for your combo

 

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.

 

ENGINE:

Cubic inch limits. (see weight guide below)

 

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.

 

FUEL:

Gasoline & Alcohol only (No Nitro) The SCSN 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

(Add 100 lbs for M/T 3763x 315 Pro Radial or M/T 3062w)

 

WHEEL BASE:

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

 

MAGNAFUEL XDR 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 .........................................2700 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)...........................3000 lbs

Big Block Centrifugal SC (601ci & up)............................3100 lbs

Big Block Single Turbo (up to 600ci)..............................3050 lbs

Big Block Single Turbo (601ci & up)...............................3150 lbs

Big Block Twin up to 88mm Turbo .................................3300 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 & 3062w

 • 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 Radial Slicks

 • Deduct 50 lbs. For All Cast (Block & Heads) Combinations

 • Deduct 200 lbs. For Mod Motor Combo's

 • Deduct 200 lbs. For Stock Bore Space on Big Block Nitrous Combos

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

 

XDR REQUIRED CLASS DECALS: Decals will be available at Sign-Up at the SCSN Trailer

 

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)

 

SERIES PRESENTED BY SPONSOR DECAL:

"FuelTech" decal must be installed on base of windshield on the driver’s side. (Bottom right-hand side when looking at

front of vehicle windshield) Decals will be available during registration at the SCSN Event Trailer

 

SCSN TITLE SPONSOR DECAL:

"Comp Cams" Decal must be placed on the upper windshield in the center

 

SCSN SERIES DECALS:

SCSN Decals must be placed on both left & right sides of race car on the 1/4 Window, 1/4 Panel or Side of Rear Wing in a

highly visible location

 

CONTINGENCY AND CONTINGENCY SPONSOR DECALS:

To receive Contingency Monies from any of the listed Contingency Sponsors, you must have the correct product listed

and matching Contingency Decal for that product on your car for the entire SCSN Racing Event... Racers will be checked

for Products & Decals while be teched in and winners & runners-up again will be checked in the Winner's Circle after the

conclusion of each event. Winners & Runner-ups failing to show up for this mandatory Inspection will forfeit all

Contingency Money that is owed!!!! 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 SCSN Event

Trailer, but in the event the SCSN 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 will qualify on a 32-car field (with Alternates) both 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.

 

SCALES:

After each qualifying and elimination pass, all 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 5lb error factor allowed.

 

ALTERNATES:

If there are more than 32 cars qualifying for the 32-car field, we will start inserting alternates (To replace broken

qualified cars) starting at spot 33 and so on... If you are an alternate, and a spot opens, you will be inserted in the 1st

available position before the drivers meeting on Saturday afternoon.

 

TOW BACK & TOW VEHICLES:

All XDR entries can tow to staging lanes and to the track scales with a golf cart or other similar small tow vehicle. All

carts will be subject to search by a SCSN Official at any time.

 

ALTERNATING LANES DURING QUALIFYING:

Each XDR 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

 

Once Your Vehicle Passes Tech Inspection, There Are No Refunds

 

PAYOUTS:

 

$3,500 / To Win

$1,000 / Runner-up

$250.00 / Semi's

 

CLASS ENTRY FEE: $200 (Plus $80 Weekend Track Tech Card Purchased at Racer Gate)

 

All rules subject to change at the sole discretion of the

SCSN Technical Services Department.

 

 

2022 Champion Chris Alston Jr