The Chevrolet 350 engine has been built since 1967, when it was made specifically for the Camaro. Since then, the 350 has undergone many changes and has been placed in many different types of vehicles. In 1989, three vehicles had a 350 -- the Corvette, Suburban and G-30 van.
There were two 350 options in the 1989 Suburban. One produced 190 horsepower (hp), while the other produced 210 hp. In the G-30 HD van, the 350 produced 185 hp and in the Corvette, it produced 240 hp.
Both of the Suburban's 350s produced 300 foot-pounds of torque. The G-20 van produced 285 foot-pounds of torque. The highest of the bunch was the Corvette's 350, producing 335 foot-pounds of torque.
Compression fluctuation was the main cause for the changes in output. The G-20 van and the less productive Suburban 350s had 8.6:1 compression ratings. The high-output Suburban 350 had a 9.3:1 compression rating and the Corvette's 350 had the highest at 9.5:1.
All versions of the 350 had identical internal specifications. The bore -- or cylinder width -- was 4 inches and the stroke -- or piston travel inside the cylinder -- was 3.48 inches. They all calculated out to 5,737 cubic centimeters (cc) of displacement, or 350.093 cubic inches.
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