About Top Doorslammer

Spectacular heads up class that currently compete in the Nordic region. The regulations allow multiple engine combinations, supercharged, nitrous injected or turbocharged and attract a vast variety of car types.


Medlemsavgiften till Top Doorslammers förarförening betalas till nedan:
Bank: Swedbank
Clearingnummer: 81299
Kontonummer: 437932866
Kontoinnehavare: Anders Edh
Avgiften är 1000 sek.
Betala detta innan säsongens start alternativt innan första tävling ni har planerat att köra annars uteblir eventuella vinstpengar / ersättning som ni annars skulle blivit tilldelade och går tillbaka till föreningen istället. Har ni inte betalat har ni inget att säga till om vid eventuell omröstning / förändring i föreningen / klassen Top Doorslammer.

Foreign drivers:

IBAN SE8000 0812990437932866
1000 SEK for membership to the drivers association. Pay this before the start of the season or the (first) race you gonna run in our series. No payment = no price money/ no right to wote for changes in the class/drivers association.

Rules for Top Doorslammer Scandinavia

The class runs on 1/8 mile

CLASS BREAK-OUT: 3.66 sec.

CHASSIS: SFI 25:1E certification required.

SUSPENSION: Race car type suspension required. Solid suspension prohibited.

WHEEL BASE: Minimum 100″, Maximum 115″. S-10, Ranger, Dakota Maximum 125″, and full size trucks maximum 140” Maximum variation is 2” side to side.

GROUND CLEARANCE: Minimum of 3” required from whatever portion of the vehicles body or chassis that breaks staging beam to 12” behind front axle centerline. Minimum of 2” for remainder of vehicle.

DSC02701 BODY: Funny car or one piece bodies not allowed even if equipped with doors. Maximum front end overhang of 45” as measured from centerline of front spindle. An extension may be used to reach 45.

DOORS: Required. Doors must be functional and able to be opened from both the inside and outside of the vehicle.

DRIVER LOCATION: Must be in stock location.

WEIGHT: Minimum weight at conclusion of run, including driver:
– Nitrous: 1050kg
– Roots blower/turbo/procharger: 1090kg
– Screw blower: 1120kg

ENGINE: No maximum cubic inch limit.

SUPERCHARGER: Use of any size centrifugal, roots-type or screw-type supercharger allowed.

Screw blower, see below:

Engine size PSI Whipple
To 500 cid 2.25 1.70
500 – 450 cid 2.15 1.62
450 cid 2.04 1.54

Roots blower
No overdrive class limit. Overdrive can never exceed manufacturer limit.


NITROUS OXIDE: Allowed, but not together with any other power adder!!

TRANSMISSION: Any type allowed, if use of automatic transmission it need to be fitted with efficient oil collecting device.

dsc_0024CLUTCH/FLYWHEEL: Flywheel and clutch meeting SFI 1.3, 1.4, or 1.5 certification required.

REAR END: Automotive type, Full-floater rear end required on cars that runs faster than 3.90 sec @ 1/8” or reaches a final speed of 210 mph (338km/h).

WHEELS: Wheels meeting SFI spec 15.1 mandatory. Maximum width 16”. Use of a liner mandatory on all non bead lock wheels.

STARTER: Optional. No push starts allowed.

FUEL: Unleaded gasoline or methanol, use of nitromethane is prohibited.

LICENSE: Valid FIA International License or C1 (Pro Mod) license mandatory.

START NUMBER: Required on windshield, rear window and both sides of the vehicle.

DECALS: Top Doorslammer logo required on both sides of the vehicle. Additional sticker to show vehicles kind of power adder also required. TD and power adder decals handed by the Top Doorslammer association.

OTHER: Follows most FIA Rules for Advanced ET but SBF rules first.

POINTS IN THE TOP DOORSLAMMER SERIES: We are running a total of 6 races in the series and we are calculating the total points standing in it after the last race by taking away the one race where you collected the lowest amount of points. This makes it possible for you to only make 5 races in the series and still be able to win it all! But remember that it might be dangerous to do so if you got problems with the car and can’t be a part of the planned races if you early choose to remove one event in the beginning of the season.

Teams that have been a part of the whole season (all 6 races) will get 25 extra points for that in the end of the season when we sums up the points standing to find the Top Doorslammer Champion, so the total points standing will be your 5 best events plus the extra 25 points IF you have been a part of all 6 races during the season.

For more detailed information take a look in the EDRS Guidelines.

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