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3800 lbs Pro Street Two
Wheel Drive Truck Rules
General
Purpose
This proposed class is intended to be an introductory
class to the sport of Two Wheel Drive Truck Pulling. Several limitations
are included in the following rules in an attempt to lower the amount of
initial input which is needed for a new pulling team and their truck to
reach the track.
Weight
Engine
- Engine designs are limited to "small block"
configurations only. OEM production blocks only. Must have OEM casting
numbers. No Bowtie, FRPP/Ford Motorsports, Direct Connection, or other
aftermarket blocks allowed.
- 366 cubic inch maximum displacement. No tolerance.
- MSD 6AL with Rev Limiter required. NO Options. Unit
must be mounted in the engine bay on passenger side firewall with rev
limit chip facing up. Engines will be limited to 7000rpm.
- Camshafts must be solid or hydraulic flat tappet. No
roller camshafts allowed. NO roller lifters.
- Cast Iron Cylinder heads only.
- Cast Iron or Cast Aluminum Intake manifolds only.
- One (1) four barrel natural aspirated carburetor,
4150 style. 850 CFM maximum with factory part number on choke housing.
Choke housing must remain stock. Only carburetor allowed is squared
flanged. Numbers must not be altered. All air must enter through the
ventura. Carburetor "Go/No Go" tool must not exceed below factory
casting ring in non modified ventura. Tool must not enter bottom base
plate. All other alterations acceptable.
- Engine exhaust must exit vertically or downward and
straight back.
Driveline
- One ton OEM manual transmission maximum, no
aftermarket, not cut gears allowed.
- Manual Clutch must be contained in factory depth
bell housing. Dual disc clutches are permitted. No certrifugal or crower
glide style clutches allowed.
- Steel flywheel, bell housing, block saver plates are
required. NO cast iron flywheels or bell housings are allowed.
- One ton automatic transmission maximum. No cut
gears. OEM 4x4 transfer case allowed.
- Automatics may run stall converter.
- Automatics must have SFI approved shielding or SFI
blanket covering converter and planetaries.
- One ton rear differential maximum.
Frame
- All trucks must be compact style mini truck, S10,
Ranger, D50, Comanche, etc. No midsize. Any brand of engine allowed in
any body.
- Factory frame only. May be reinforced front to back.
NO adding to the lenght of the frame.
- Maximum wheelbase 109-1/4".
- Maximum length 153 inches measured from the center
of the rear axle to front of the weights.
- Rear weights must stay inside of bed.
Hitch
- Hitch distance 39-1/4 inches minimum measured from
the center of the rear axle to the hook point.
- Hitch must be stationary in all directions.
- Maximum hitch height is 24 inches.
- Drawbar must be straight from the anchor point to
hook point.
- Hitch anchor point can be no higher than 36 inches
off the ground.
- Anchor pinhole will be 7/8" minimum.
- Hook point hole will be no less than 3.5 inches from
front to back and no less than 3 inches side to side. 1" minimum from
edge to the hook point.
Tires
- D.O.T. tires
only. Unaltered tread pattern.
- Maximum tire size 31x10.50.
- Maximum rim width 10 inches.
Body
- Factory OEM body, any OEM or aftermarket hood. Above
hood air cleaner must be covered by non-functional scoop or hood
enclosure.
- Firewall must remain and in original position.
- Driver's seat must remain in original stock
location.
- NO fuel lines or tanks allowed in driver's
compartment.
- Battery must be in engine compartment or bed area.
- Top of bed must be covered if bed is cut out.
- All factory OEM glass. NO Lexan or Plexiglass.
Fuel
- Gasoline is the only acceptable fuel.
- NO oxygen carriers or combustion accelerators
permitted.
Safety
- All 2 wheel drive trucks will use wheelie bars. The
bars will extend behind the rear tire and be a maximum of 10 inches off
the ground with a 5 inch square pad. NO rolling wheels or moving devices
of any kind on stabilizer bars.
- Must have kill switch for electric fuel pump and
ignition mounted to the right side of hitch. Reverse lights in factory
location or above the hitch.
- Must have a fire extinguisher in cab within arms
reach.
- Safety belts are required. OEM or 4 point harness
minimum. Seatbelts msut be worn while hooked to the sled.
- SFI approved engine balancer. OEM balancer must have
360 degree shielding.
- Steel Flywheel and safety bell housing and block
saver plates required.
- Automatics SFI Approved transmission shield and SFI
Blanket covering converter and planetary.
- Engine driven cooling fans shielded 360 degrees
around fan.
- Shields are required for side of block from base of
head to the top of the frame.
- Firewall and cab floor must have all unused holes
patched or plugged.
- Shields around u-joints and driveline everv three
feet; 6" long: 2" maximum spacing around u-joint, shield thickness 3/8"
aluminum, 5/16" steel. Vehicles must have driveshaft loops every three
(feet). Driveshaft must be round and 1/8" thick. All vehicles must have
universal joint covers (360 degrees). 6" long centered on joint.
- All drivers must wear an approved fire suit and a
DOT approved helmet.
- Sled bumpers may extend past the hitch or
body. These are recommended but not required.
- Truck must have working brakes.
- Truck must be equipped with a tow hook on the front
of the vehicle for pull off purposes.
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