| FEATURE | 1984 | 1985 | 1985.5 | 1986 |
| ENGINE | 2.3L in-line 4-cylinder single overhead cam | 2.3L in-line 4-cylinder single overhead cam | same but revised camshaft longer intake/exhaust duration, higher flow rate intake manifold | same but revised camshaft longer intake/exhaust duration, higher flow rate intake manifold |
| TURBOCHARGER | AiResearch T-3, oil cooler, integral wastegate allows 14psi boost, air-to-air intercooler lowers intake charge temperature from 300 to 175 degrees Fahrenheit | AiResearch T-3, oilcooler, integral wastegate allows 14psi boost, air-to-air intercooler lowers intake charge temperature from 300 to 175 degrees Fahrenheit; water cooling added for turbo bearings | Same but boost increased to 15psi | Same but boost increased to 15psi, water cooling added for turbo bearings |
| FUEL INJECTION | Multi-point, multi-port of regular or premium fuel from EEC-IV calibrated with cockpit controls | Multi-point, multi-port of regular or premium fuel from EEC-IV calibrated with cockpit controls | Same but upgraded to 35lb | ECM module dialed back |
| COMPRESSION RATIO | 8:01:1 | 8:01:1 | 8:01:1 | 8:01:1 |
| HORSEPOWER | 175 at 5000 rpm | 175 at 5000 rpm | 205 at 5000 rpm | 200 at 5000 rpm |
| TORQUE | 210 lb/ft at 3000 rpm | 210 lb/ft at 3000 rpm | 248 at 3000 rpm | 240 at 3000 rpm |
| EXHAUST | Single, low restriction with single pipe from converter back | Same | Dual front to rear, back pressure reduced 50% | Dual front to rear, back pressure reduced 50% |
| TRANSMISSION | Five speed manual, Hurst modified Borg-Warner linkage for shorter throw. Clutch, brake and accelerator pedals repositioned for heel-toe downshifting. | Same with smoother throw. | Heavier duty | Heavier duty |
| REAR AXLE RATIO | 3:45:1 Traction-Lok | 3:73:1 Traction-Lok | 3:73:1 Traction-Lok | 3:73:1 Traction-Lok |
| STEERING | Independent modified MacPherson strut, adjustable Koni low-pressure gas charged shocks, 1.12-inch diameter stabilizer bar, Lincoln Continental forged lower controller arms, higher spring rates. | Independent modified MacPherson strut, adjustable Koni low-pressure gas charged shocks, 1.12-inch diameter stabilizer bar, Lincoln Continental forged lower controller arms, higher spring rates. Tighter valving on Koni shocks, anti-roll bar teflon lined, front bracketry reinforced | Same | Same |
| REAR SUSPENSION | Live axle, angle upper and lower control arms, Quadra shock, telescoping Koni gas shock with smaller "kicker" shocks, higher spring rates, .067 in. diameter stabilizer bar. Quadra shocks not on early 84 SVOs, these had longitudinally mounted axle dampers. | Live axle, angle upper and lower control arms, Quadra shock, telescoping Koni gas shock with smaller "kicker" shocks, .067 in. diameter stabilizer bar. | Same | Same |
| BRAKES | Power ventilated discs front and rear. Front 11.08x1-in. rotor, rear 11.6x.9-in. rotor | Power ventilated discs front and rear. Front 11.08x1-in. rotor, rear 11.6x.9-in. rotor | Power ventilated discs front and rear. Front 11.08x1-in. rotor, rear 11.6x.9-in. rotor | Power ventilated discs front and rear. Front 11.08x1-in. rotor, rear 11.6x.9-in. rotor |
| WHEELS AND TIRES | 16x7 five-lug aluminum alloy with 225/50VR Goodyear NCT tires | 16x7 five-lug aluminum alloy with 225/50VR Goodyear Gatorback tires | 16x7 five-lug aluminum alloy with 225/50VR tires | 16x7 five-lug aluminum alloy with 225/50VR tires |
| PERFORMANCE | 0-60 in 7.5 sec. Standing quarter mile 15.5/90 mph. Top speed 134 mph. | 0-60 in 7.5 sec. Standing quarter mile 15.5/90 mph. Top speed 134 mph. | 0-60 in 6.6 sec. Standing quarter mile 15.10 at 91.55 mph. Top speed 140 mph. | 0-60 in 6.9 sec. Standing quarter mile 15.3 sec. Top speed 140 mph. |
The Texas Chapter SVOOA wishes to thank the leadership of the Pacific Southwest Region of SVOOA for its assistance in providing accuracy to this chart.