Pulled heads off.Somebody(on this board) told me they probably had some bent valves. I kind of figured it but did not want to believe it. I am going to fix the heads with some new valves. Where can I get some valves? Also, I have a wore out cam and timing chain. I can`t get over the power it had, running like it was!!! What kind of cam should I go with? A friend has a brand new cam and the lifters out of a rebuilt long block ( they put a bigger cam in it), for $75. Would you go with a factory cam for that price or bump it up? My grand mother used to say,( haste makes waste) it was true this time. Also found out I have a 4-bolt block, not that that makes a difference though. Thanks for all your help, on my last post about the intake backfire.