OK, this weekend I decided to see what my 1990 350 with 150K miles had left in it. It runs great and doesn't leak oil, plenty of power. It lets out a puff of smoke when it starts after sitting for a couple days but I'm sure it's the valve seals. My compression test showed all cylinders (without oil) were around 180. The worst being 175 the best being at 185. I think that's pretty good. /forums/images/graemlins/thumb.gif So now the question. Should I go ahead and put Vortec heads, a cam, and intake on this old block. I'm debating over whether or not to go all out and put in the crate motor but seeing as how my bottom end is in great shape I may be able to get a couple more years out of it. What do you guys think? ANy recommendations on a cam for a TBI 350?