SDRA 2015 Rules
Vintage Gas Dragster refers to the type of car, not the age of these cars.
Vintage Dragsters should be built to resemble drag cars of the late 40’s, early 50’s. They should conform to today’s safety standards. This will mainly impact the roll cage area. This is to satisfy track and insurance requirements. (YOU ARE RESPONSIBLE FOR THE SAFTEY AND INTEGRITY OF YOUR CAR.)
Vintage Gas Dragsters rule changes must be voted on by car owners and passed by 60% of the members. Each car gets one vote. ONLY car owners that are current dues paying members of SDRA can vote. All competition points earned by that car stay with that car. And points totaled at Dec. 31st or sooner for the year.
Important - The idea of these cars and rules is that a person working a 40 hour week or is on a limited budget can have and enjoy a race car. No car shall be quicker than 11.50 seconds that will be considered a "break out", causing a loss, If both Break out the closer to 11.50 sec. wins. Any questions, please feel free to ask.
#1 – ENGINE:
Inline and flathead V8’s motors – stock iron blocks. Flatheads motors may run aluminum heads. OHV inline motors must run original type IRON head and IRON block. Porting and polishing allowed. Cars with cooling systems or water tanks must have a radiator cap and over flow catch can.
NO: - Overhead Cam motors, Overhead valve V8’s or V6’s. No Superchargers, Turbochargers, or Nitrous oxide.
#2 – IGNITIONS:
#3 - CARBUERATOR/S ONLY:
Carbs must have anti siphon device(s), such as velocity stack(s), air cleaner(s), or air scoop(s) in the 40’s and 50’s style.
#4 – FUELS:
Any Pump gas or Racing gas only. NO ALCOHOL.
#5 – TRANSMISSION / CLUTCHES:
AUTOMATICS ALLOWED, STALL CONVERTERS ALLOWED. Must have a WORKING neutral safety switch, and a reverse lockout. Shift light ok. Cars should have an NHRA style shield around the flex plate area.
No Trans brakes.
Standard transmissions must have a reverse lock out with a neutral safety switch, and run a ¼” 360 degree scatter shield if using stock bell housing. Flywheels and clutch assembly should be new, not rebuilt. Racing components preferred.
#6 – FLOORBOARDS:
NHRA requires all cars to have a floorboard or belly pan to protect the driver from debris. Floorboards over the transmission area are to be of the following material and go to the rear of the seat;
Steel - .024 min. Aluminum - .032min.
An SFI certified blanket may be used in place of a floorboard over the transmission.
#7 – TIRES / WHEELS:
A 6 inch max. rear tire tread width, automotive DOT street tire only. Radial or Bias ply OK. Rear wheels can be any diameter. Steel wheels recommended. Pie Crust slicks up to 10 inches wide with recommended width wheels allowed. You may run either wheel/tire combination.
#8 – STARTERS / BATTERIES / TAILLIGHT / BRAKES:
Cars must be equipped with an engine mounted starter and be self-starting. Batteries must be securely mounted in a box. Cars must have a MASTER Cut Off switch mounted on the REAR of the car. A solid RED light must be attached to the REAR of the car for night racing. Brakes can be foot and/or hand operated and must be in good working order. No line locks.
#9 – DRIVER SAFETY:
Driver must wear a full face helmet. Snell 2005 or later, or approved by NHRA, and at least a single layer fire retardant jacket and pants or suit and leather shoes, Neck, arm restraints, gloves and a 5 point safety restraint harness that is SFI approved and up to date is required. Ref. NHRA.
#10 – CHASSIS:
Mild steel tubing of .125” wall, (a wall thickness greater than .118 will meet NHRA spec.. Stock or modified frame rails, 3” OD x .125” wall round, 1-1/2” x 3” rectangular tube, 3” x 2” x.125” C channel, are acceptable. NO Chrome moly.
Stock width rear axle preferred. (52” min track width). Rear end to be solid mounted with a min of 3ea. Grade 8, 3/8” bolts per side. An anti-rotation device should be used. 52" min track width measured center of tire to center of tire.
Front axle width 40” min (king pin to king pin). A sprung front axle is recommended, solid mounting is optional. Positive caster recommended.
Wheel base; 92” min., 130” max
Driver’s seat bottom must be between the axles. NO sling shot style cars.
Grade 5 or better bolts and capture washers required on all heims.
ALL cars must have a fire wall, side panels, cowl and Floorboard or belly pan, to protect the driver.
#11 – ROLLBARS:
A 5 point cages can use 1-5/8” x .125 wall tubing; main hoop must be 2” over driver’s helmet, with the front hoop 3” min. in front of the driver’s helmet.
A 6 point cages can use 1-1/2” x .125” tubing; main hoop must be 2” over driver’s helmet, with the front hoop 3” in front of the driver’s helmet.
See NHRA rule book for cage construction details.
#12 – DRIVELINE:
If an open drive line is used: a safety loop (2” x ¼” strap) must be installed within 6” of the center line of each U joint. Floor boards or steel drive-shaft cover must separate the driver from the drive shaft.
#13 – STEERING:
Any box converted to center steer; Vega, Corvair, etc., SPE or the like. No excessive play. Grade 8 bolts or better required and capture washers.
#14 – PIT SAFETY:
Any time a car is running (warming up, tuning etc.) . A jack and jacks stands must be used. A liscensed DRIVER MUST BE IN THE VEHICLE ANY TIME THE ENGINE IS RUNNING. Observe PIT speed limits. If your car is overheating SHUT IT OFF , DON’T SPEED UP. Someone will come get you as soon as possible. SAFETY IS THE RE-SPONSIBILITY OF EVERY RACER.
ANY QUESTIONS, PLEASE CONTACT: