Yes, If you have a 73-87 c p chassie, it is a direct bolt in in place of any gm engine. That is if you use the P chassie motor mounts. If you do a K chassie, You will need to make you own mounts. I did a 86 6.2 K20 to 4BTA a few years back. Used the stock th400 in the stock location. I modified the p 2wd mounts to work in the 4x4 frame. Other then that, it was easy.