The Chevrolet Malibu IV Sport Coupe, produced for the 1979 and 1980 model years, represented a downsized iteration of Chevrolet’s popular mid-size offering. Positioned as a sporty variant within the fourth generation Malibu lineup (1978-1983), the 3.8 V6 Automatic model aimed to provide a balance of performance and comfort. This coupe, sharing its platform with other GM “A-body” vehicles, was a response to increasing fuel efficiency demands while still offering the spaciousness expected of American cars. The Sport Coupe trim, with the 3.8L V6 and automatic transmission, occupied a mid-range position in the Malibu lineup, offering more power than the base four-cylinder models but falling short of the performance potential of larger displacement engines available in other Chevrolet vehicles.
Technical Specifications
| Brand | Chevrolet |
| Model | Malibu |
| Generation | Malibu IV Sport Coupe |
| Type (Engine) | 3.8 V6 (110 Hp) Automatic |
| Start of production | 1979 |
| End of production | 1980 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 6 |
| Doors | 2 |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 12.8 kg/Hp, 77.9 Hp/tonne |
| Weight-to-torque ratio | 5.5 kg/Nm, 182.7 Nm/tonne |
| Power | 110 Hp @ 3800 rpm |
| Power per litre | 29 Hp/l |
| Torque | 258 Nm @ 1600 rpm (190.29 lb.-ft. @ 1600 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 |
| Kerb Weight | 1412 kg (3112.93 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) | 136 mm (5.35 in.) |
| Minimum turning circle (turning diameter) | 12.2 m (40.03 ft.) |
| Approach angle | 23° |
| Departure angle | 16° |
| 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 | 185/75 R14 |
| Wheel rims size | 6.0J x 14 |
Powertrain & Engine Architecture
The heart of this Malibu variant was Chevrolet’s 3.8-liter (231 cubic inch) V6 engine. Designated with various codes depending on specific calibration, this engine was a staple of GM’s A-body lineup. The 110 horsepower output was achieved through a two-barrel carburetor fuel system, a relatively simple setup for the era. The engine utilized an overhead valve (OHV) valvetrain with two valves per cylinder. The 3.8L V6 was known for its relatively smooth operation and decent low-end torque, making it well-suited for everyday driving. The automatic transmission was a three-speed TH350 unit, a robust and widely used transmission in American vehicles of the time. This transmission was selected for its durability and ease of maintenance, rather than outright performance. The longitudinal engine placement and rear-wheel drive configuration were typical for American coupes of this period.
Driving Characteristics
The 3.8L V6 with the three-speed automatic provided adequate, but not exhilarating, performance. Acceleration was reasonable for the late 1970s, but significantly slower than the more powerful V8 options available in other Malibu models or competing vehicles. The automatic transmission’s gear ratios were geared towards fuel economy and smooth cruising, rather than aggressive acceleration. The car felt comfortable on the highway, but lacked the responsiveness desired by drivers seeking a more sporty experience. Compared to a manual transmission equipped Malibu, the automatic version felt noticeably less engaging and slower to respond to throttle inputs. The rear-wheel drive layout provided a balanced feel, but the relatively soft suspension tuning prioritized ride comfort over handling precision.
Equipment & Trim Levels
The Sport Coupe trim generally included features like color-keyed carpeting, a sport steering wheel, and upgraded interior trim compared to the base Malibu models. Standard features on the 1979-1980 Malibu Sport Coupe with the 3.8L V6 and automatic transmission typically included a bench seat (often upholstered in cloth or vinyl), an AM radio, and basic instrumentation. Optional extras included air conditioning, power steering, power brakes, cruise control, and upgraded sound systems. The availability of these options varied depending on the specific package selected by the original buyer.
Chassis & Braking
The Malibu IV Sport Coupe utilized a body-on-frame construction, common 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. While adequate for normal driving conditions, the braking system lacked the stopping power and modulation of more modern systems. The 185/75 R14 tires provided a reasonable balance of ride comfort and grip.
Market Reception & Comparison
The 3.8L V6 automatic Malibu Sport Coupe was generally viewed as a sensible and practical choice for buyers seeking a comfortable and reliable coupe. Critics noted its adequate performance and fuel economy, but also pointed out its lack of sporting character compared to some competitors. Compared to the four-cylinder Malibu models, the 3.8L V6 offered a significant power boost, but at the cost of slightly reduced fuel economy. Compared to the V8-powered Malibus, the 3.8L V6 offered a more affordable price point and better fuel efficiency, but lacked the V8’s raw power and acceleration. Reliability was generally good, although carburetor maintenance could be required over time.
Legacy
The Chevrolet Malibu IV Sport Coupe 3.8L V6 Automatic, while not a particularly groundbreaking vehicle, represents a significant chapter in American automotive history. It exemplifies the downsizing trend of the late 1970s and early 1980s, as manufacturers responded to changing consumer preferences and fuel efficiency regulations. The 3.8L V6 engine proved to be a durable and reliable powerplant, and continued to be used in various GM vehicles for many years. Today, these Malibus are sought after by collectors and enthusiasts who appreciate their classic American styling and relatively simple mechanical design. Parts availability is generally good, making them relatively easy to maintain and restore. The combination of the V6 engine and automatic transmission makes these cars accessible and enjoyable for a wide range of drivers.
