Rules – Extreme ProMod

GENERAL

.400 Pro Tree Heads up racing

1. FRAME \ CHASSIS \ SUSPENSION

1.1 Must be based on a production car and can be made of fibreglass, carbonfibre, metal such as Doorslammer, Prostock or Promod bodies permitted
1.2 No one piece bodies, no funnycar bodies, no open cockpit, no open wheelers or roadsters allowed
1.3 Cars must have atleast two functioning doors being able to be opened both by inside and outside

2. ENGINE – (SINGLE POWER ADDER ONLY)

A. Naturally Aspirated
Small Block No minimum weight
Big Block No Minimum Weight

B. Nitrous Oxide:
Small Block 2250 lbs
Big Block 4.840 & 4.900 Bore Center 2450 lbs (deduct 100lbs for less than 550ci)
Big Block 5.00 Bore Center 2550 lbs
Big Block 5.20 & 5.30 Bore Center 2650 lbs

C. Turbo Charged and Super Charged
Single SB 2500 lbs Big Block 2700
Twin Turbo 94mm SB 2700lbs BB 3050lbs
Twin Turbo 91mm SB 2650lbs BB 3000lbs
Twin Turbo 88mm and smaller SB 2550lbs BB 2900lbs.
Conventional heads deduct 100lbs
Turbocharged stock bore space BB less then 550ci deduct 100lbs
Centrifugal Superchargers SB 2500 lbs, BB 2700 lbs(deduct 100lbs for stock bore space BB less than 550ci)
Twin Centrifugal Superchargers SB 2700 lbs, BB 3000 lbs(deduct 100lbs for stock bore space BB less than 550ci)
Roots Supercharger SB 2500 lbs, BB 2700 lbs
Screw superchargers max overdrive 121% “C” rotor 3000 lbs, 125% “D”rotor 2900lbs(MAXIMUM ENGINE SIZE 540ci)
4 & 6 cylinder alcohol & intercooler permitted No minimum weight
Maximum engine size on all turbo charged engines 670ci
Any turbo or supercharged combination utilizing a block larger than 5” bore spacing add 100lbs.
Maximum turbo size of 94mm on all twin turbo combinations

3. ELECTRICAL

3.1 Computers allowed
3.2 Data acquisition allowed

4. WHEELS

4.1 15″ or 16″ inch rims only

5. TYRES

5.1 Maximum Tyre size 33×10.5W

6. FUELS

6.1 Any ANDRA approved fuel permitted except nitro “see fuel list here”

7. SAFETY

7.1 All vehicles must comply to SFI & ANDRA safety regulations reletive to performance of vehicle.

QUESTIONS

IF YOU’RE NOT SURE PLEASE POST YOUR QUESTION IN THE TECHNICAL SECTION HERE

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