Draft Rules:
UPM 2.6 Pro Stock Diesel FWD
Weight 8,000
All normal NTPA FWD / Diesel SSFWD / Diesel Pro Stock FWD rules, including shielding, safety, and SFI requirements, apply to this class plus the following rules.
1. Ballast is permitted. Front hanging weights are allowed,
not to exceed 60 inches forward of the center of the front
axle. This will be measured from center of front wheels to
end of weight assembly. Ballast may be added in the bed of
the truck.
2. The body must be the OEM truck body, including the full
bed floor. The body must retain full sheet metal, aftermarket
hoods are permitted. The hood must be closed and
securely latched while the vehicle is hooked to the sled.
No flatbeds permitted. The complete OEM floor pan is mandatory.
A complete OEM firewall is mandatory.
3. The OEM chassis is mandatory. The engine must
be in the OEM location for the body used. The vehicle
must retain the full OEM chassis. Wheel tubs, back-half
conversions, tube chassis, etc., are prohibited. Maximum of
1 ton truck chassis only allowed.
4.An OEM transmission and transfer case are mandatory.
They must have been an option on a one-ton or smaller
pickup.
5. The engine is limited to a stock-appearing, Engine and
transmissions can be interchanged between Dodge, Ford
and GM as long as they came in a 1 ton truck or less from
the factory. Complete engine must have stock appearance
except where otherwise noted in these rules.
aftermarket intake manifolds are allowed . Front of engine
block can be no farther forward than 17” of centerline of front axle.
6. Maximum of one p pump limited to one plunger per
cylinder. The use of multiple high-pressure common-rail
fuel pumps are legal. Powerstroke engines with a single
factory turbo may utilize a second HPOP.
7. Non-OEM rear-end housings are prohibited. It must
have been an option on a one-ton or smaller pick up. Rear
axle bolts must be covered by a cap or shield.
8. Hydraulic steering permitted.
9. Suspension The upper mounting point for strut assemblies must be
in the factory location. Adjustable caster/camber pillow
ball mounts are permitted. The lower control arm may
be strengthened provided factory-mounting points to
chassis are maintained. The lower mounting point for the
strut assembly may be modified for improved caster or
camber. Strut tower braces, lower tie bars, sway bars, and
limit straps are permitted. Traction bars permitted.
Lowering or raising the vehicle height with suspension
modifications is permitted; welds permitted for attachment to
frame or axle housing Blocked suspension is permitted. No air bags.
10. Must be DOT approved tire. Maximum tire height 35 inches.
No studded tires or chains. No alteration to tires allowed. No
bar or terra tires. Dual rear tires only permitted. Dual front wheels are prohibited.
11. Non-OEM transfer cases are prohibited. The transfer
case must have been an option on a one-ton or smaller truck.
12. Non-OEM transmissions are prohibited. Aftermarket
torque converters, valve bodies and internal components
are permitted. Transmission brakes are prohibited.
A clutch meeting minimum SFI Spec 1.1 or 1.2 is
mandatory on all manual transmission vehicles. All manual
transmissions must be clutch assisted.
Sequential shifters are prohibited.
13. The vehicle is limited to a 2.6 inducer bore single
turbocharger. The compressor wheel must protrude into a
2.6” bore for 1/8”. The inlet will be measured using a 2.605
inch plug the plug must not be able to enter the inducer
bore. A stock map width enhancement (MWE) groove
must be inside neck area where intake cover is measured.
No MWE groove will be allowed that has a width greater
than .200”. All provisions allowing air into the wheel other
than via the bore and the MWE groove are prohibited. The
vehicle driver will be responsible for making compressor
wheel accessible for tech personal to measure bore and be
able to inspect compressor wheel.
All primary blades must protrude into the bore
14. Water injection is prohibited. All system components
must be removed from the truck.
15. Intercoolers are allowed. Dumping/draining of
intercooler within 100 feet of track is prohibited.
