The Chevrolet Malibu IV Sport Coupe, produced for the 1977 and 1978 model years, represented a downsized intermediate offering from Chevrolet. Positioned as a more sporty variant within the fourth-generation Malibu lineup (1973-1977), the Sport Coupe featured a distinctive 2-door configuration and was available with a range of engines. The 3.8-liter V6, producing 105 horsepower and paired with a three-speed automatic transmission, was a mid-range option, offering a balance between performance and fuel economy for the era. This configuration aimed to appeal to buyers seeking a comfortable and stylish coupe without the expense of the larger V8 engines.
Technical Specifications
| Brand | Chevrolet |
| Model | Malibu |
| Generation | Malibu IV Sport Coupe |
| Type (Engine) | 3.8 V6 (105 Hp) CAT Automatic |
| Start of production | 1977 |
| End of production | 1978 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 6 |
| Doors | 2 |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 13.5 kg/Hp, 74.1 Hp/tonne |
| Weight-to-torque ratio | 5.6 kg/Nm, 177.1 Nm/tonne |
| Power | 105 Hp @ 3400 rpm |
| Power per litre | 27.7 Hp/l |
| Torque | 251 Nm @ 2000 rpm, 185.13 lb.-ft. @ 2000 rpm |
| Engine layout | Front, Longitudinal |
| Engine displacement | 3791 cm3, 231.34 cu. in. |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 96.5 mm, 3.8 in. |
| Piston Stroke | 86.4 mm, 3.4 in. |
| Compression ratio | 8:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Carburettor |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | OHV |
| Engine oil capacity | 4 l, 4.23 US qt | 3.52 UK qt |
| Kerb Weight | 1417 kg, 3123.95 lbs |
| Trunk (boot) space – maximum | 470 l, 16.6 cu. ft |
| Fuel tank capacity | 68 l, 17.96 US gal | 14.96 UK gal |
| Length | 4895 mm, 192.72 in |
| Width | 1816 mm, 71.5 in |
| Height | 1354 mm, 53.31 in |
| Wheelbase | 2745 mm, 108.07 in |
| Front track | 1486 mm, 58.5 in |
| Rear (Back) track | 1467 mm, 57.76 in |
| Front overhang | 915 mm, 36.02 in |
| Rear overhang | 1235 mm, 48.62 in |
| Ride height (ground clearance) | 137 mm, 5.39 in |
| Drag coefficient (Cd) | 0.45 |
| Minimum turning circle (turning diameter) | 12.2 m, 40.03 ft |
| Approach angle | 20° |
| Departure angle | 15° |
| Ramp-over (brakeover) angle | 14° |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 3 gears, automatic transmission |
| Front suspension | Independent, type McPherson with coil spring and anti-roll bar |
| Rear suspension | dependent spring suspension, Transverse stabilizer, Trailing arm |
| Front brakes | Ventilated discs |
| Rear brakes | Drum |
| Steering type | Steering rack and pinion |
| Tires size | 195/75 R14; 205/75 R14 |
| Wheel rims size | 6.0J x 14 |
Powertrain & Engine Architecture
The heart of this Malibu variant was the Chevrolet 3.8-liter (231 cubic inch) V6 engine. This engine, internally designated with various codes depending on specific emissions controls, was a member of Chevrolet’s long-running small-block V6 family. The 105 horsepower output was achieved through a two-barrel carburetor, a relatively simple fuel delivery system for the time. The engine utilized an overhead valve (OHV) valvetrain, with two valves per cylinder. The 8:1 compression ratio was a compromise to allow the engine to run on the lower-octane gasoline prevalent in the 1970s. The three-speed automatic transmission, a General Motors TH350 unit, was a common and reliable design, but its relatively wide gear ratios were geared more towards comfortable cruising than spirited acceleration. The engine was mounted longitudinally in the front of the vehicle, driving the rear wheels.
Driving Characteristics
The 3.8L V6 with the automatic transmission delivered a comfortable, but not particularly exciting, driving experience. Acceleration was adequate for highway merging and passing, but the 105 horsepower and the automatic’s gear spacing meant it wasn’t a performance-oriented car. The automatic transmission’s shift points were optimized for fuel economy and smoothness, resulting in a somewhat leisurely pace. Compared to the available V8 engines, the 3.8L automatic Malibu was noticeably slower. However, it offered a smoother and quieter ride than the V8s, and the automatic transmission made it easier to drive in city traffic. The rear-wheel-drive configuration provided a balanced feel, but the suspension tuning prioritized ride comfort over handling precision.
Equipment & Trim Levels
The Sport Coupe trim generally included features like color-keyed carpeting, a deluxe steering wheel, and upgraded interior trim compared to the base Malibu models. Standard features for the 1977-1978 Malibu Sport Coupe with the 3.8L V6 typically included a bench seat, basic instrumentation, and an AM radio. Optional extras included air conditioning, power steering, power brakes, a tilt steering wheel, and upgraded audio systems. Upholstery options generally consisted of cloth and vinyl combinations in various colors. The Sport Coupe also featured a more aggressive exterior styling package, including brightwork and unique badging.
Chassis & Braking
The Malibu IV Sport Coupe utilized a body-on-frame construction, typical for American cars of the era. The front suspension was an independent McPherson strut design with coil springs and an anti-roll bar, providing a reasonable level of ride comfort. The rear suspension was a more traditional dependent spring suspension with a transverse stabilizer and trailing arms. Braking duties were handled by ventilated discs at the front and drum brakes at the rear. Steering was via a rack-and-pinion system, offering reasonably precise control. Tire sizes typically ranged from 195/75 R14 to 205/75 R14, mounted on 6.0J x 14 inch steel wheels.
Market Reception & Comparison
The 3.8L V6 automatic Malibu Sport Coupe was generally well-received as a practical and comfortable family car. Critics noted its smooth ride and adequate performance for everyday driving. However, it was often criticized for its lack of outright power compared to the V8-powered models. Fuel economy was considered reasonable for the time, but not exceptional. Compared to the larger V8 engines, the 3.8L offered better fuel efficiency and lower maintenance costs. Compared to imported compact cars, the Malibu offered more interior space and a more comfortable ride, but at the expense of fuel economy and handling agility.
Legacy
The Chevrolet Malibu IV Sport Coupe 3.8L V6 automatic, while not a particularly rare or collectible car today, represents a significant example of 1970s American automotive engineering. The 3.8L V6 engine proved to be a durable and reliable powerplant, and many examples are still on the road today. However, due to its age, finding well-maintained examples can be challenging. Parts availability is generally good, but restoration projects can be time-consuming and expensive. In the used car market, these Malibus typically command modest prices, making them an affordable entry point into the world of classic American cars. The combination of a V6 engine and automatic transmission made it a popular choice for buyers seeking a comfortable and reliable coupe during its production run.
