Quote:
Originally Posted by Micheal Tomac
what are the rules for the 2.5 and 2.6 pulling classes?
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NHRDA and PPL Rules are the same and will apply to 2.6 , 3.0 and Super Stock
Note- This pull is a double points pull where competitors can earn points for both the PPL and for the NHRDA.
NHRDA points will go towards the National points championship and also will earn pullers an invite to the
NHRDA World Finals in September at the Texas Motorplex in Ennis Texas.
Note - Pullers must have current 2013 NHRDA membership ($50.00 annual fee) to be awarded points and invited to World Finals.
Fleece is the sponsor of 2.5 class and they will be in charge of Tech for this class
2.5 Class rules are as follows
1. Weight: 8,000lbs maximum with driver.
2. No front hanging weights. There may be hidden weight, but must not be seen from side view of the
truck. It must be safely mounted. Snow plow brackets are permitted, but no part of the bracket may be
in front of the bumper. Factory front bumpers are required, must be mounted in stock location. If
additional weight is added it must be placed in the bed.
3. The batteries must be securely mounted. They may not be located in the driver compartment or
forward of the radiator core support.
4. The body must be the OEM truck body including the full bed. The body must retain full sheet metal.
Metal aftermarket hoods are permitted. Fiberglass hoods and roll pans only are permitted. All fiberglass
hoods must be shielded on the underneath side with sheet metal or aluminum skin a minimum of .060
thick. The hood must be closed and securely fastened while the truck is hooked to the sled. The
complete OEM firewall and complete OEM floor pan is mandatory. A factory installed pickup bed or
commercial style aftermarket bed must be installed.
5. Four wheel hydraulic functional brakes are mandatory.
6. The OEM chassis is mandatory. The engine must be in the OEM location for the body used. The
vehicle must retain the OEM chassis. Wheel tubs, back half conversions, tube chassis, ETC., are
prohibited.
7. Radiators must be in stock location and be of at least stock size.
8. An OEM transmission and transfer case are mandatory. They must have been an option on a one ton
or smaller pickup.
9. The engine must have been available as a factory option on a one-ton or smaller pickup. Cubic Inch
limit of 444 CI. Block must circulate coolant freely. No hard filled blocks. Water pumps may be factory or
electric powered. All factory belt driven accessories, excluding the air conditioning compressor, must be
retained and powered via the crankshaft by a standard serpentine “V” belt. Electric cooling fans are
permitted. No individual intake manifolds. (Example ZZ –Customs.)
10. All trucks must be equipped to direct exhaust upward and must exit rearward of driver’s
compartment. 2 3/8 diameter bolts must be installed through exhaust pipe in a cross pattern within 1
inch of each other, as close to the turbo as possible.
11. The fuel must be Pump#1 or #2 Diesel or Soy/ Biodiesel. Fuel must be commercially available.
12. Fuel Injection pump is limited to cylinder number specific (I.E. 6 cylinder pump on a 6 cylinder
motor). Duel high pressure common rail fuel pumps or HPOPS are permitted. Ag Governors are not
allowed. No Sigma or 12 cylinder pumps allowed.
13. All engines turning more than 4500 rpm must be equipped with a harmonic balancer or dampener
meeting SFI spec 18.1.
14. The hitch must be a receiver- style hitch. Reinforcements are permitted. Reinforcements must not
extend forward of the center line of the rear axle and must remain inside the frame rails. The hooking
point must be rearward of the stock location of the tailgate. The hitch must be horizontal to the ground
and stationary in all directions. Bumper may be notched or removed. The hitch’s height from the ground
may not exceed 26 inches. The hooking point must have a minimum of 3 inch by 3 ¾ inside opening for
the sled hook. The hooking point must be a minimum of 44 inches from the center of the rear axle, to
the end of the hole where the hook touches metal to be pulled from, this is the hooking point.
15. A complete interior, including dashboard, door panels, headliners, etc. is mandatory. 2 matching
front seats are mandatory. Aftermarket seats are permitted, they must be fully upholstered. All factory
controls lights, windows, signals, wipers, etc. must be retained and in working order. The use of a hand -
throttles is prohibited. Aftermarket Gauges are allowed. Right front headlight may be removed for air
inlet to engine.
16. All trucks are required to have a kill switch located on the back of the truck, located near the hooking
point. On trucks with an electric injected fuel pumps it must have an electric shut off or disconnect for
the injection pump on the back of the truck. It is recommended to have an air shut off on all trucks. Kill
switch failure will result in disqualification.
17. Nitrous Oxide is prohibited. No other extenders are allowed. All systems components must be
removed from the truck.
18. Propane is prohibited. All system components must be removed from the truck.
19. Non OEM rear-end housings are prohibited. The rear end must have been for a 1 ton or smaller
pickup. Rear axle bolts must be covered with cap or shield.
20. All drivers must wear helmet, and a SFI 3.2a approved fire jacket and long pants, Not necessarily fire
suit pants. All visible U-Joints must be shielded, along with axle bolts.
21. The vehicle must retain the full, original OEM steering gear. The vehicle must retain the original OEM
power assistance, if it was so equipped. Additional stabilizers are permitted. Non OEM power assist
methods are prohibited. The factory suspension configuration must be retained. Modifications to the
front suspension that would alter the original location (I.E. moving it forward or backwards) are not
permitted. Strut tower braces, lower tie bars, sway bars, and limited straps are permitted. Traction bars
and devices are permitted they must be bolt on only, and welds are permitted for the attachment to the
frame or axle housing. Traction bars if installed must have a chain or cable or some type of safety device
mounted 1 foot from the front support to catch the bar in case of failure. Control arms may be
strengthened or replaced, providing all original mounting points are retained and used. The rear
suspension may be solid with a removable block. Air bag spring assist and air shocks are prohibited. An
OEM style suspension is mandatory.
22. The tired must be DOT street tires. NO cut tires.
23. Non-OEM transfer cases are prohibited. It must have been an option on a 1 ton or smaller pickup
truck.
24. Automatic Transmission: Non OEM transmissions are prohibited. Aftermarket torque converters,
valve bodies and internal components are permitted. Transmission brakes are prohibited. Any non- OEM
floor mounted automatic shifter must be equipped with a spring- loaded positive reverse lockout device
to prevent the shifter from accidently being put into reverse. A functional neutral safety switch is
mandatory. Vehicle must not start in gear. All transmissions lines must be metallic or high pressure type
hose. All vehicles using an automatic transmission must be equipped with flex plate meeting SFI Spec
29.1. A blow proof transmission blanket is recommended.
25. Transmission Manual: non-OEM transmissions are Prohibited. Aftermarket internal components are
permitted. A clutch meeting minimum SFI Spec 1.1 or 2.1 is mandatory on al engines. All manual
transmissions must be clutch assisted. Sequential shifters are prohibited. All transmissions or clutch
pedals will have a safety interlock switch so that vehicle will not go into gear. A blow proof transmission
blanket is recommended.
26. S-4 Turbo is the largest turbo allowed. Turbo must be a true 2.5 charger. No clipped wheels or step
down covers. ¼ inch MWE groove maximum. Inducer bore must be non- removable. All air must go
through 2.5 inducer bore or MWE groove. The wheel must protrude into the 2.5 bore 1/8”. Turbo will be
checked with a 2.550” plug. The driver will be responsible for making compressor wheel and bore
accessible for tech officials to measure bore and inspect compressor wheel.
27. Water injection is prohibited. All systems components must be removed from the truck.
28. The vehicle must retain the original factory wheelbase and truck width. Cab and chassis trucks may
not exceed 172 inch center to center of axles. Front duel-wheel spacers may only be used with
accompanying positive offset dually style wheels.
All General Rules Apply!
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