Any small block or 454 starter will work. Just go to your local parts house an pick one up, they should have one in stock but get one with a lifetime warranty so you can exchange it if it ever goes bad. http://www.oreillyauto.com/site/c/detail/ULT0/033367.oap?year=1985&make=Chevrolet&model=K20&vi=1052109&ck=Search_starter_01920_1052109_2456&keyword=starter&pt=01920&ppt=C0330
