Specifications
Buick Regal Turbo, Grand National and GNX
Buick Regal Turbo, Grand National and GNX factory specifications: 104 sourced across 8 model years, 1978–1987.
104 specifications · 21 sources
1978
| Measure | Value | Applies to |
|---|---|---|
| Wheelbase | 108.1 in | Regal Sport Coupe (K47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Tread, front | 58.5 in | Regal Sport Coupe (K47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Tread, rear | 57.8 in | Regal Sport Coupe (K47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Length | 199.6 in | Regal Sport Coupe (K47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Width | 72.2 in | Regal Sport Coupe (K47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Height | 53.4 in | Regal Sport Coupe (K47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Head room, front | 37.9 in | Regal Sport Coupe (K47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Head room, rear | 38.1 in | Regal Sport Coupe (K47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Leg room, front | 42.6 in | Regal Sport Coupe (K47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Leg room, rear | 36.4 in | Regal Sport Coupe (K47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Shoulder room, front | 54.5 in | Regal Sport Coupe (K47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Shoulder room, rear | 56.1 in | Regal Sport Coupe (K47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Hip room, front | 51.6 in | Regal Sport Coupe (K47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Hip room, rear | 54.5 in | Regal Sport Coupe (K47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Trunk capacity | 16.5 cu ft | Regal Sport Coupe (K47); printed as 467 litres (16.5 cu ft) |
| Standard engine (powerteam chart) | 3.8 litre (231 CID) turbo 2-bbl. V-6 (LC5), Federal; the 4-bbl. LC8 is listed as available | Regal Sport Coupe (K47); the brochure prints no horsepower or torque |
| Transmission (powerteam chart) | automatic, with '2.73' printed alongside it in the powerteam chart; the brochure's turbocharged V-6 text says a specially calibrated automatic transmission and a special rear axle ratio are included | Regal Sport Coupe (K47); the number of forward gears is not printed |
| Standard tires | steel-belted radial-ply P205/70R-14 | Regal Sport Coupe (the Standard Equipment list gives the Regal and Regal Limited steel-belted radial-ply P195/75R-14) |
| Standard steering and brakes | fast-ratio power steering and power brakes | Regal Sport Coupe (the Standard Equipment list gives the Regal and Regal Limited manual steering and manual front disc, rear drum brakes) |
| Standard suspension | Rallye ride-and-handling suspension with front and rear stabilizer bars, firmer springs and shocks | Regal Sport Coupe |
| Standard instrumentation | boost light and temperature gage | Regal Sport Coupe |
| Hood | distinctive domed (raised) hood | Regal Sport Coupe |
1979
| Measure | Value | Applies to |
|---|---|---|
| Wheelbase | 108.1 in | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Tread, front | 58.5 in | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Tread, rear | 57.8 in | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Length | 200 in | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Width | 72.2 in | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Height | 53.4 in | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Head room, front | 37.9 in | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Head room, rear | 38.1 in | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Leg room, front | 42.6 in | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Leg room, rear | 36.3 in | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Shoulder room, front | 56 in | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Shoulder room, rear | 56.1 in | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Hip room, front | 51.6 in | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Hip room, rear | 54.9 in | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Trunk capacity | 16.3 cu ft | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed as 462 litres (16.3 cu ft) |
| Standard engine | 3.8 litre (231 CID) 4-bbl. turbocharged V-6 | Regal Sport Coupe; the brochure prints no horsepower or torque |
| Standard transmission | automatic | Regal Sport Coupe; the number of forward gears is not printed |
| Standard steering and brakes | fast-ratio power steering and power brakes | Regal Sport Coupe |
| Standard tires | steel-belted radial P205/70R-14 | Regal Sport Coupe |
| Standard suspension | Rallye ride-and-handling suspension with front and rear stabilizer bars, firmer springs and shocks; coil springs front and rear, computer-selected springs, full-perimeter frame | Regal Sport Coupe |
| Standard instrumentation (Buyer's Guide wording) | temperature gage and vacuum boost lights | Regal Sport Coupe |
| Standard instrumentation (Sport Coupe profile wording) | turbo-boost gage on the dash | Regal Sport Coupe |
| Standard spare tire | compact spare (stowaway spare with limited-slip differential) | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47) |
| Standard seating | choice of cloth or vinyl notchback seat; extra-cost buckets with shift console | Regal Sport Coupe |
1980
| Measure | Value | Applies to |
|---|---|---|
| Wheelbase | 108.1 in | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Tread, front | 58.5 in | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Tread, rear | 57.8 in | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Length | 200 in | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Width | 72.2 in | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Height | 54.1 in | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Head room, front | 37.9 in | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Head room, rear | 38.1 in | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Leg room, front | 42.6 in | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Leg room, rear | 36.3 in | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Shoulder room, front | 1,442 mm (56.1 in) as printed; the two figures disagree | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); see the conflict entry for this row |
| Shoulder room, rear | 56.1 in | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Hip room, front | 51.6 in | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Hip room, rear | 54.9 in | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed in millimetres with inches in parentheses, the inch figure is entered |
| Trunk capacity | 16.3 cu ft | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47); printed as 462 litres (16.3 cu ft) |
| Standard engine | 3.8 litre (231 CID) 4-bbl. turbocharged V-6 | Regal Sport Coupe; the brochure prints no horsepower or torque |
| Standard transmission | automatic | Regal Sport Coupe; the number of forward gears is not printed |
| Standard steering and brakes | fast-ratio power steering and power brakes | Regal Sport Coupe |
| Standard tires | steel-belted radial P205/70R-14 | Regal Sport Coupe |
| Standard suspension | Rallye ride-and-handling suspension; coil springs front and rear, computer-selected springs, full-perimeter frame | Regal Sport Coupe |
| Standard instrumentation | temperature gage and vacuum boost lights | Regal Sport Coupe |
| Standard headlamps | four-headlamp system with tungsten-halogen high-beam headlights | Regal Sport Coupe |
| Standard ignition | High-Energy Ignition | Regal Sport Coupe |
| Standard spare tire | compact spare (stowaway spare with limited-slip differential) | Regal line (the brochure prints a single dimensions column for models J47, K47 and M47) |
1983
| Measure | Value | Applies to |
|---|---|---|
| Axle ratio / final drive | 3.42 / 2.29 :1 | Regal T Type |
1984
| Measure | Value | Applies to |
|---|---|---|
| Curb weight (test car) | 3,342 lb | Motor Trend test car |
| Wheelbase | 108.1 in | Regal coupe |
| Axle ratio / final drive | 3.42 / 2.29 :1 | T-Type and Grand National |
| Tires | P215/65R15 Goodyear Eagle GT on 15x6 cast aluminum | Grand National test car |
| Spring rates (T/GN vs Regal), front/rear | 440/125 vs 330/115 lb/in | T-Type and Grand National |
| Overall length, coupe / sedan | 200.6 / 196.0 in | Regal |
| Height, coupe / sedan | 54.6 / 55.5 in | Regal |
| Width, coupe / sedan | 71.6 / 71.1 in | Regal |
| Tread, front / rear | 58.5 / 57.7-57.8 in | Regal |
| Standard tires | Regal P195/75R14 SBR whitewall; Regal T Type P205/70R14 SBR | Regal |
| LM9 turbo V-6 details | bore x stroke 3.8 x 3.4 in; 8.0:1; 200 hp at 4000 rpm, 300 lb-ft at 2400 rpm; sequential fuel injection; valve lift 0.400 in intake, 0.422 in exhaust | Regal T Type |
1985
| Measure | Value | Applies to |
|---|---|---|
| Axle ratio | 3.42 :1 | T Type and Grand National |
| Wheelbase | 108.1 in | Regal coupe |
| Shipping weight, T Type | 3,079 lb | Regal T Type row (same figure as the base coupe row; may be a table error) |
| Overall length / height / width, coupe | 200.6 / 54.6 / 71.6 in | Regal coupe |
| LM9 turbo V-6 details | 3.8 x 3.4 in; 8.0:1; 200 hp at 4000 rpm, 300 lb-ft at 2400 rpm; turbocharged, sequential fuel injection; VIN code 9 | Regal T Type |
1986
| Measure | Value | Applies to |
|---|---|---|
| Wheelbase | 108.1 in | Regal coupe |
| Length / width | 200.6 / 71.6 in | Regal coupe |
| Curb weight (test car) | 3,256 lb | Grand National tested by AutoWeek |
| Axle ratio | 3.42 :1 | T Type and Grand National |
| Tires | 215/65R15 | Grand National |
| Axle ratios (Regal T Type and Grand National) | 3.42:1 standard, none optional | Regal T Type / Grand National |
| Tread, front / rear | 58.5 / 57.7-57.8 in | Regal |
1987
| Measure | Value | Applies to |
|---|---|---|
| Final drive ratio (WE4) | 3.42 :1 | WE4 Turbo T |
| Tires (WE4) | P215/65R15 Goodyear Eagle GT on 15x7 aluminum wheels | WE4 Turbo T |
| Maximum lateral acceleration (WE4, Buick claim) | 0.84 g | WE4 Turbo T |
| EPA fuel economy estimate (WE4) | 17 city / 24 highway mpg | WE4 Turbo T |
| Shipping weight, Grand National | 3,385 lb | Regal Grand National |
| Shipping weight, Regal Turbo WE4 | 3,155 lb | Regal V-6 Turbo WE-4 row |
| GNX tires | Goodyear P245/50VR-16 front, P255/50VR-15 rear (as printed) | GNX |
| Overall length / height / width, coupe | 200.6 / 54.6 / 71.6 in | Regal coupe |
| GNX turbo V-6 (as listed) | 8.5:1; 276 hp at 5000 rpm; 400 lb-ft at 3000 rpm; ceramic-impeller turbocharger, larger intercooler | GNX |
| Axle ratios (Grand National) | 3.42:1 standard, none optional | Grand National |
Each year's heading links to that model year's full fact sheet. Specification labels are carried as recorded and not normalized across years, so the same measure may be worded differently from one year to the next.