My father and I planned on rebuilding my 305 but he just had his 8th back surgery and I dont think we will get it done, so I am just going to get a new 350 and put it in. I have a few questions though... After 86 they started putting in fuel injection engines didnt they? And they wont go into the earlier ones without haveing to switch everything right? And the 350 will go in place of my 305 without any problems right. I dont need a 350 but I want one I figure since my 305 needs rebuilt why not just do the 350 instead of rebuilding the 305 and then dpwn the road putting in a 350. So thats the deal replies greatly appreciated. 1985 k-5 gmc jimmy 4x4 sierra classic. 1970 cuda 440 6 pack executive edition steering column shift.