The Chevy Sportvan, precursor to the minivan and the SUV, rests on a light truck frame with the ability to accommodate eight passengers or a comparable payload. It's this type of vehicle that later spurred the trend of large SUVs as family cars. Originally designed for commercial use with no rear windows, the 1988 Chevrolet Sportvan 305 later evolved into an all purpose family/travel vehicle with rear windows, top luggage rack and additional trim packages.
Engine
The 1988 Sportvan 305, also known as the "G30," has two engine options to choose from. The first being a 5.7-liter V8 gas engine, which produces 195 horsepower and 290 foot-pounds of torque. The second engine option is a 6.2-liter V8 diesel engine, producing 145 horsepower and 248 foot-pounds of torque.
The 5.7-liter gas engine has a bore and stroke 4.00 X 3.48 and a compression ratio of 9.3:1. The 6.2-liter diesel has a slightly smaller bore and stroke of 3.98 X 3.80 but a characteristically higher 21.3:1 compression ratio. This is characteristically higher since diesels employ a less combustive fuel, which requires more compression to ignite.
Transmission
Both the diesel and gas versions of the 1988 Sportvan come standard with a four-speed automatic transmission, including overdrive.
Fuel Economy
While both models of the 305 have a 22-gallon fuel tank and electronic fuel injection, efi, the gas V8 gets only 13 miles to the gallon in the city and 18 miles to the gallon during highway operation. However, the diesel version offers 16 and 23 miles to the gallon during city and highway driving respectively.
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