These are off the GSCA site
2005 TSO - Turbo Street Outlaw Race Rules
Official 10/01/2004
GENERAL
Qualifying ET is 9.99 or quicker.
Heads-up .400 pro tree start and pro ladder.
Winner and runner-up are subject to re-weigh and re-tech immediately after final round or at any other time.
Entrants caught breaking the rules will be disqualified from the TSO class.
CHASSIS
Current NHRA certified seat restraints, helmet and fire suit required
Car must be NHRA certified
Car should possess all applicable safety equipment for potential ET/speeds attained
Minimum car weight w/driver must be 3,400 pounds
Removable ballast is limited to 100 pounds maximum
Stock wheelbase required (108.0" measured)
Engine/firewall must be in stock location
Factory stock body lines/contours must be maintained (i.e. hood, doors, fenders, wheel openings, bumpers, trunk lid, etc)
Any fiberglass or carbon fiber body panels, bumpers, etc. allowed, no hood scoops
Complete, painted Buick Turbo Regal/Grand National body only required
Stock operating glass windows and windshield are required, no lexan
***Lights and horn must be operational
Stock front inner wheel wells required
Full stock GM frame is required, no tube chassis cars are allowed
Modifications to stock rear wheel wells allowed, mini-tubs are allowed
Outer frame rails notching allowed, inner rails remain in the stock location
Reinforcements at inner rear frame rails are allowed
Stock style rear suspension only, no ladder bars or aftermarket 4 links allowed
***Coil-over rear shocks mounted in the stock location(s) only are allowed
Drive shaft safety loop required
No restrictions on braking system, power or manual brakes are allowed
Brake system line locks allowed
Wheelie bars are allowed
Parachutes are required for trap speeds in excess of 150 mph
ENGINE
Any Buick V6 cylinder block allowed, no cubic inch displacement limits.
Any oil pan allowed, no dry sump oiling system allowed.
Any cylinder heads, allowed.
Any intake manifold and plenum allowed.
Any size single stock or aftermarket throttle body allowed w/single throttle plate only.
Any type of stock location headers & crossover allowed.
No restrictions on engine driven accessories; i.e. alternator, water pump, p/s, etc.
A/C and heating equipment may be removed.
TURBO, DOWNPIPE & INTERCOOLER
Any single 3-bolt or 4-bolt stock location turbo allowed. Turbo compressor size limited up to and including 88mm. No “Thumper” style turbo is allowed
A 4”maximum size, stock location downpipe is allowed w/ a 5" inlet/transition at the turbo reduced down to 4” immediately after the 90* elbow at the turbo exit. It must be routed down through the stock location. No flex pipe allowed
A 4”maximum size single or dual exhaust system is allowed. It must muffle and exit at/behind the rear axle tube(s), away from the car, equal to the lower body line
***Any wastegate configuration allowed
Any stock location or front mount air to air intercooler is allowed
No liquid intercoolers, intercooler external spray cooling or add-on cold boxes allowed
ENGINE MANAGEMENT & FUEL SYSTEM
Battery may be in any location.
Any ECM/fuel management system is allowed w/ any onboard electronics are allowed
Any air induction system allowed
Stock fuel tank w/sump addition or fuel cell allowed
Any fuel pump(s) configuration/location w/ any fuel lines allowed
Any fuel rail(s) allowed
Any type fuel pressure regulator allowed
Any size fuel injectors allowed, no limit on number used
Gasoline fuel only, no additives, alcohol, or nitrous oxide injection allowed
TRANSMISSION
Any GM automatic transmission, 200-4R, TH400 w/ any torque converter allowed
No Lenco, Liberty or manual transmissions with or without clutch allowed
DIFFERENTIAL
Any type stock width differential housing allowed, +/- 1" allowance w/ limited-slip differentials or spool allowed and any gear ratio allowed
WHEELS & TIRES
Any matched set of four 15" diameter wheels allowed
Slicks w/ sidewall designation up to a 29.5” x 11.50” -15” size tire w/ a maximum measured footprint of 11.25” is allowed
W tires are allowed
***Phoenix Brand 11.5”standard and W sidewall designation tires are not allowed do to tread width restrictions
DOT street tires w/sidewall designations up to a 30.0” x 13.50”-15” size tire are allowed
INTERIOR
Stock dash must be retained with any gauges and any transmission shifter allowed
A maximum of 2 hood mounted gauges allowed
Car must have a fully carpeted floor board w/2 front seats, door panels, headliner, applicable interior trim, etc. Rear seat may be removed; area must be carpeted
2005 TSO - Turbo Street Outlaw Race Rules
Official 10/01/2004
GENERAL
Qualifying ET is 9.99 or quicker.
Heads-up .400 pro tree start and pro ladder.
Winner and runner-up are subject to re-weigh and re-tech immediately after final round or at any other time.
Entrants caught breaking the rules will be disqualified from the TSO class.
CHASSIS
Current NHRA certified seat restraints, helmet and fire suit required
Car must be NHRA certified
Car should possess all applicable safety equipment for potential ET/speeds attained
Minimum car weight w/driver must be 3,400 pounds
Removable ballast is limited to 100 pounds maximum
Stock wheelbase required (108.0" measured)
Engine/firewall must be in stock location
Factory stock body lines/contours must be maintained (i.e. hood, doors, fenders, wheel openings, bumpers, trunk lid, etc)
Any fiberglass or carbon fiber body panels, bumpers, etc. allowed, no hood scoops
Complete, painted Buick Turbo Regal/Grand National body only required
Stock operating glass windows and windshield are required, no lexan
***Lights and horn must be operational
Stock front inner wheel wells required
Full stock GM frame is required, no tube chassis cars are allowed
Modifications to stock rear wheel wells allowed, mini-tubs are allowed
Outer frame rails notching allowed, inner rails remain in the stock location
Reinforcements at inner rear frame rails are allowed
Stock style rear suspension only, no ladder bars or aftermarket 4 links allowed
***Coil-over rear shocks mounted in the stock location(s) only are allowed
Drive shaft safety loop required
No restrictions on braking system, power or manual brakes are allowed
Brake system line locks allowed
Wheelie bars are allowed
Parachutes are required for trap speeds in excess of 150 mph
ENGINE
Any Buick V6 cylinder block allowed, no cubic inch displacement limits.
Any oil pan allowed, no dry sump oiling system allowed.
Any cylinder heads, allowed.
Any intake manifold and plenum allowed.
Any size single stock or aftermarket throttle body allowed w/single throttle plate only.
Any type of stock location headers & crossover allowed.
No restrictions on engine driven accessories; i.e. alternator, water pump, p/s, etc.
A/C and heating equipment may be removed.
TURBO, DOWNPIPE & INTERCOOLER
Any single 3-bolt or 4-bolt stock location turbo allowed. Turbo compressor size limited up to and including 88mm. No “Thumper” style turbo is allowed
A 4”maximum size, stock location downpipe is allowed w/ a 5" inlet/transition at the turbo reduced down to 4” immediately after the 90* elbow at the turbo exit. It must be routed down through the stock location. No flex pipe allowed
A 4”maximum size single or dual exhaust system is allowed. It must muffle and exit at/behind the rear axle tube(s), away from the car, equal to the lower body line
***Any wastegate configuration allowed
Any stock location or front mount air to air intercooler is allowed
No liquid intercoolers, intercooler external spray cooling or add-on cold boxes allowed
ENGINE MANAGEMENT & FUEL SYSTEM
Battery may be in any location.
Any ECM/fuel management system is allowed w/ any onboard electronics are allowed
Any air induction system allowed
Stock fuel tank w/sump addition or fuel cell allowed
Any fuel pump(s) configuration/location w/ any fuel lines allowed
Any fuel rail(s) allowed
Any type fuel pressure regulator allowed
Any size fuel injectors allowed, no limit on number used
Gasoline fuel only, no additives, alcohol, or nitrous oxide injection allowed
TRANSMISSION
Any GM automatic transmission, 200-4R, TH400 w/ any torque converter allowed
No Lenco, Liberty or manual transmissions with or without clutch allowed
DIFFERENTIAL
Any type stock width differential housing allowed, +/- 1" allowance w/ limited-slip differentials or spool allowed and any gear ratio allowed
WHEELS & TIRES
Any matched set of four 15" diameter wheels allowed
Slicks w/ sidewall designation up to a 29.5” x 11.50” -15” size tire w/ a maximum measured footprint of 11.25” is allowed
W tires are allowed
***Phoenix Brand 11.5”standard and W sidewall designation tires are not allowed do to tread width restrictions
DOT street tires w/sidewall designations up to a 30.0” x 13.50”-15” size tire are allowed
INTERIOR
Stock dash must be retained with any gauges and any transmission shifter allowed
A maximum of 2 hood mounted gauges allowed
Car must have a fully carpeted floor board w/2 front seats, door panels, headliner, applicable interior trim, etc. Rear seat may be removed; area must be carpeted