Dimensions:
LxWxH: 188.0 x 72.8 x 50.3-in || Windshield slope angle: 62-degrees
Wheelbase: 101.0-in || Track, Front / Rear: 60.7-in / 61.6-in
Min. ground clearance: 4.8-in || Approximate Weight: 3370-lbs.
Approximate Weight Distribution, Front / Rear: 54% / 46%

Engine:
Description: 305-ci V8 [LG4] with QuadraJet 4-barrel carburetor
Bore x Stroke: 3.74 x 3.48-in || Compression Ratio: 9.3:1
Factory power ratings: 165-bhp @ 4400-rpm || 245-ft_lbs @ 2800-rpm
Dyno power results**: 178-bhp @ 4100-rpm || 262-ft_lbs @ 3000-rpm

Transmission:
Description: 4-speed automatic, THM 700R4 [MD8/MX0]
Gear Ratios: 1st = 3.06; 2nd = 1.63; 3rd = 1.00; 4th = 0.70; Reverse = 2.29
Final drive: 2.73:1 [GU2] open differential

Other:
Exhaust: Single catalytic converter and crossover muffler, dual tailpipes
Brakes, Front / Rear: 10.5-in vented disc / 9.5-in finned aluminum drum
Wheels: 15x7-in steel Rally Wheels, unique design for 1987
Tires: P215/65-R15 (Stock); P225/60ZR15 (Current)

* Factory documentation from GM (Owner's Manual, Factory Shop Manual, company sales and technical information) has slightly conflicting numbers for primary dimensions, compression ratio, and a number of other items.
** Calculated with dyno figures of 143 RWHP and 210 RWTQ and 20% drivetrain losses. Dyno numbers were obtained before dual snorkel intake and richer carb settings.
*** Performance figures are estimates based on published and/or calculated numbers.

Items indicated [XYZ] are factory option codes.