firebird_1995
01-16-2017, 07:30 PM
Extreme Street Power Adder
Qualifying, Ladder, and Tree Information
Limited to quickest 16 qualifiers. Sportsman Ladder. .400 Pro Tree
Vehicle/Body Rules
Open to all year, make, and model vehicles. All vehicles must be stock bodied and stock appearing. Aftermarket panels limited to hood.
OEM dash required. Carpet and interior panels forward of package shelf required
Windows must be factory style safety glass and operational. Lexan windows prohibited. All mirrors for body style claimed required.
Minimum race weight including driver 3350lbs.
Engine & Drivetrain Rules
Must have LT1 based engine (Factory LT1 Block). Cylinder heads must retain the factory 23 degree valve angle and spacing, Trick Flow 21 degree heads permitted (TFS-30400008-M54). Aftermarket heads and converted small block Chevrolet heads will be permitted if they follow the above guidelines.
Stock or stock ported intake manifold required. LT1/4 specific Edlebrock intake manifold permitted. No cutting or welding of intake manifold allowed.
Carburetors allowed only with the use of GM Performance Parts dual plane intake manifold (24502592)
Hydraulic roller camshafts only. Solid lifters prohibited.
Exhaust must exit behind front seats.
Factory PCM required. Engine must have fully functional opti-spark distributor. Stock style aftermarket opti is allowed. LS1 PCM/24X conversions allowed with a 200lbs weight penalty (opti-spark not required with 24x conversion). Aftermarket EFI PCMs are not allowed.
Two-steps only allowed for manual transmission vehicles.
Gasoline or E85 only.
Rear mounted batteries must be mounted and vented per NHRA specifications and have a functional disconnect switch.
The following transmissions are allowed without weight penalty: 700R4, 4L60, 4L60e, 4L80e and original equipment manual transmissions.
GM TH350 & TH400 are allowed with a 200lbs weight penalty.
Torque converters not permitted with manual transmissions and clutch activated automatic transmissions are prohibited. No trans-brakes allowed.
Any automotive rear axle permitted.
Power Adders
Only one power adder from the following allowed:
Nitrous: Single nitrous nozzle or plate systems only. Nitrous and fuel solenoids must be visible. Purge must exit engine compartment. Nitrous oxide systems may only use gasoline or E85 only for fuel enrichment circuit. Progressive nitrous controllers prohibited. NHRA permitted bottle heating only.
Supercharger: Maximum D1SC or T-trim. Supercharger compressor wheel must be constructed of cast or billet aluminum. Exotic materials prohibited. Electronic boost controllers prohibited. Meth Injection Permitted
Turbo Single: Maximum 76mm inducer and maximum T6 flange. Turbocharger must be of conventional impeller and housing design and type. Turbocharger compressor wheel must be constructed of cast or billet aluminum. Exotic materials prohibited. The tips of the impeller wheel may not be stepped, cut down, or notched to meet impeller tip to tip dimensions. Reducers prohibited. Electronic boost controllers prohibited. Anti Lag systems prohibited. Meth Injection Permitted
Turbo Dual: Maximum 45mm inducer and maximum T4 flange. Turbocharger must be of conventional impeller and housing design and type. Turbocharger compressor wheel must be constructed of cast or billet aluminum. Exotic materials prohibited. The tips of the impeller wheel may not be stepped, cut down, or notched to meet impeller tip to tip dimensions. Reducers prohibited. Electronic boost controllers prohibited. Anti Lag systems prohibited. Meth Injection Permitted
Chassis & Suspension
Vehicles must have stock style suspension for year, make, model claimed.
Solid engine mounts allowed. Motor plates are prohibited.
Factory style tubular replacement components allowed. Factory style rear sway bar must mount to differential with rubber/poly bushings and solid end links are allowed.
All brakes must be functional.
Wheels & Tires
Any automotive wheel permitted. Tires must have a maximum height of 28” and a maximum tread width of 10.5” for DOT bias-ply and DOT radial tires. Non DOT tires are not permitted.
During competition passes, all vehicles will be required to weigh after each pass. Vehicles under minimum weight will be disqualified.
Qualifying, Ladder, and Tree Information
Limited to quickest 16 qualifiers. Sportsman Ladder. .400 Pro Tree
Vehicle/Body Rules
Open to all year, make, and model vehicles. All vehicles must be stock bodied and stock appearing. Aftermarket panels limited to hood.
OEM dash required. Carpet and interior panels forward of package shelf required
Windows must be factory style safety glass and operational. Lexan windows prohibited. All mirrors for body style claimed required.
Minimum race weight including driver 3350lbs.
Engine & Drivetrain Rules
Must have LT1 based engine (Factory LT1 Block). Cylinder heads must retain the factory 23 degree valve angle and spacing, Trick Flow 21 degree heads permitted (TFS-30400008-M54). Aftermarket heads and converted small block Chevrolet heads will be permitted if they follow the above guidelines.
Stock or stock ported intake manifold required. LT1/4 specific Edlebrock intake manifold permitted. No cutting or welding of intake manifold allowed.
Carburetors allowed only with the use of GM Performance Parts dual plane intake manifold (24502592)
Hydraulic roller camshafts only. Solid lifters prohibited.
Exhaust must exit behind front seats.
Factory PCM required. Engine must have fully functional opti-spark distributor. Stock style aftermarket opti is allowed. LS1 PCM/24X conversions allowed with a 200lbs weight penalty (opti-spark not required with 24x conversion). Aftermarket EFI PCMs are not allowed.
Two-steps only allowed for manual transmission vehicles.
Gasoline or E85 only.
Rear mounted batteries must be mounted and vented per NHRA specifications and have a functional disconnect switch.
The following transmissions are allowed without weight penalty: 700R4, 4L60, 4L60e, 4L80e and original equipment manual transmissions.
GM TH350 & TH400 are allowed with a 200lbs weight penalty.
Torque converters not permitted with manual transmissions and clutch activated automatic transmissions are prohibited. No trans-brakes allowed.
Any automotive rear axle permitted.
Power Adders
Only one power adder from the following allowed:
Nitrous: Single nitrous nozzle or plate systems only. Nitrous and fuel solenoids must be visible. Purge must exit engine compartment. Nitrous oxide systems may only use gasoline or E85 only for fuel enrichment circuit. Progressive nitrous controllers prohibited. NHRA permitted bottle heating only.
Supercharger: Maximum D1SC or T-trim. Supercharger compressor wheel must be constructed of cast or billet aluminum. Exotic materials prohibited. Electronic boost controllers prohibited. Meth Injection Permitted
Turbo Single: Maximum 76mm inducer and maximum T6 flange. Turbocharger must be of conventional impeller and housing design and type. Turbocharger compressor wheel must be constructed of cast or billet aluminum. Exotic materials prohibited. The tips of the impeller wheel may not be stepped, cut down, or notched to meet impeller tip to tip dimensions. Reducers prohibited. Electronic boost controllers prohibited. Anti Lag systems prohibited. Meth Injection Permitted
Turbo Dual: Maximum 45mm inducer and maximum T4 flange. Turbocharger must be of conventional impeller and housing design and type. Turbocharger compressor wheel must be constructed of cast or billet aluminum. Exotic materials prohibited. The tips of the impeller wheel may not be stepped, cut down, or notched to meet impeller tip to tip dimensions. Reducers prohibited. Electronic boost controllers prohibited. Anti Lag systems prohibited. Meth Injection Permitted
Chassis & Suspension
Vehicles must have stock style suspension for year, make, model claimed.
Solid engine mounts allowed. Motor plates are prohibited.
Factory style tubular replacement components allowed. Factory style rear sway bar must mount to differential with rubber/poly bushings and solid end links are allowed.
All brakes must be functional.
Wheels & Tires
Any automotive wheel permitted. Tires must have a maximum height of 28” and a maximum tread width of 10.5” for DOT bias-ply and DOT radial tires. Non DOT tires are not permitted.
During competition passes, all vehicles will be required to weigh after each pass. Vehicles under minimum weight will be disqualified.