For those going to run the Hybrid "Street" class (10.00) please review the revised rules and give me your input -
Hybrid Street Class – HSC
General
• Heads-up 4-tenths pro tree start and pro ladder. (1 vs 16, 2 vs 15, 3 vs 14, 4 vs 13, 5 vs 12, etc....)
• No peer technical inspections relating to safety equipment rules by class participants or peers, Beech Bend Raceway track safety technician personnel will make all rulings on track safety related items.
• Winner and runner-up are subject to re-tech immediately after final round or at any other time.
• Any entrant caught trying to deliberately break the rules will be disqualified from the HSC class.
Definition of "Factory Stock Appearing"
This class is for “Hybrid Street Cars” that are tagged and registered to be driven legally on the street. This means that all lights will work, the car will have a full exhaust, a current tag and registration, D.O.T legal drag radial tire that is not to exceed 325/50/15 in height or width. The use of electronic two steps (or any electronic launching devices) is prohibited.
Body
• Any mass production model from any manufacture is allowed.
• Any Regal entering this class cannot have been originally equipped with a turbo Buick motor.
Chassis
• Seat belts, lights, horn, and windshield wipers must be operational.
• All factory headlights must be in place during competition.
• Helmet required. Cars must pass track safety inspection.
• Car should possess all applicable safety equipment for potential ET/speeds attained.
• Stock operating glass windows and windshield required.
• No tube chassis cars allowed.
• No wheelie bars or parachutes.
• Brake system line locks allowed.
• Drive shaft safety loop required.
• Driver's name and club decal on side/quarter windows allowed. Sponsor/vendor decal is acceptable on the rear window.
• A maximum of 2 hood mounted gauges are allowed.
Engine
• Buick V6 block 240-c.i. for 3.8 blocks and 260-c.i. for 4.1 blocks. (Those suspected of cheating may be P&G’ed to check displacement. Those caught cheating will be banned.)
• Block casting numbers 25526109, 25520329, 25506484 and 25506818 only. (If 4.1 block is used the vehicle must weigh a minimum of 3400-lbs.)
• Must use DIS type I or II ignition, NO distributor.
• 8-bolt Iron or aluminum cylinder head castings required.
• Any valve covers and oil pan allowed.
• No dry sump-oiling system.
• Factory stock intake manifold required. No external welding allowed except for EGR block-off plate and/or repairs. * No modifications such as welding, cold weld epoxy, puttying, etc. may be done on any portion of the intake manifold runners to increase manifold air flow are allowed.
• Factory stock appearing or aftermarket cast aluminum intake plenum allowed.
• Factory stock appearing type throttle body required. (Aftermarket replacement stock style TB allowed up to 70-mm.)
• Any crossover pipe allowed.
• Any single or dual exhaust system allowed.
• Down-pipe size in limited to 3.5-inches maximum.
• Exhaust is limited to 3.5 inches single and 3.0 inches dual. No homemade “mufflers”.
• Cut outs are allowed so long as they are placed under the flat area of the bottom of the car and do not exceed 3.5 inches in diameter.
Turbo
• Any 3 bolt turbo but must be limited to 70-mm or smaller.
• No welding is allowed on any exterior surface of the turbo compressor housing to allow for a larger compressor wheel.
• No CO² or electronic waste-gate or actuator controls allowed.
• Turbo heat shield/cover optional.
Intercooler
• Air-to-Air intercooler required.
• No liquid intercoolers, intercooler external spray cooling, or add-on cold boxes allowed.
Engine Management & Fuel System
• Stock ECM or aftermarket DFI system allowed.
• Factory Stock Appearing (Type I) or (Type II) DIS cam position sensor required.
• No individual coil per spark plug ignitions allowed.
• No distributor ignitions allowed.
• No delay boxes, throttle stops, or crossover boxes allowed.
• Any intake air induction system allowed.
• Any MAF sensor is acceptable as well as translators.
• Any internal or external fuel pump(s) are allowed.
• Voltage increasing and fuel pump hot wiring devices are allowed.
• Any type fuel pressure regulator allowed.
• Any fuel injectors allowed - 6 maximum.
• Gasoline (Race and pump fuel.) as well as alcohol injection allowed.
Engine Compartment
• Stock water pump operational w/belt in stock location.
• Any engine compartment dress up allowed.
• Battery, one (1) only and it may be in any location.
• Any type electric engine cooling fan required.
• Any radiator allowed.
Transmission
• A GM transmission required. (No Jeffco, Lenco or Liberty type transmissions allowed. No shift assistance such as air, gas or electronic solenoid operated shifters allowed.)
• Any size torque converter acceptable, with or without lock-up.
• Any transmission oil cooler and pan allowed.
Tires & Wheels
• Tires must be a D.O.T approved drag radial and be stamped as such. No Slicks or ET Streets allowed. (M/T ET Street Radial is allowed.) Tire must have a minimum tread depth of 1/32 of an inch and are subject to re-check at any time.
• Tire footprint when installed on a rim and mounted on the car can not exceed height or width of a 325/50-15 drag radial at 10 psig checking pressure.
• Tires may not be shaved at the tread edge to meet the above mentioned dimensions maximum tread width rule.
Interior
• Full factory style interior required. (Seats from other models or aftermarket seats are OK).
• Transmission shifter required. This means no air, electronic type solenoids or “helper” devices are allowed.
• Any additional aftermarket gauges allowed.
Thank you.
Jim C.