General Information Year 1999 Make chevy Model silverado Packages z71 History 5.3l vortec, LS6 cam, ported and built 5.3 heads, 76mm on3 turbo, 9 inch lift on 37's 1999 chevy silverado Gallery 4642.jpg 100 KB Views: 46 Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Link