Was a 454 engine available in 1985 Suburban?
No, the 454 cubic inch (7.4L) engine was not available in the Chevrolet Suburban in 1985. GM phased out the 454 in most of its vehicles by the early to mid-1980s, focusing on smaller, more fuel-efficient engines. The 1985 Suburban offered either a 5.7L (350 cubic inch) small-block V8 or a 6.2L diesel V8.