My car has been hibernating in my garage for the last 8 years having only 10k miles on the last rebuild before the oil pressure went down to 5 lbs. So After a healthy tax refund I decided to rebuild it for the third time, but this time i'm doing it myself. After removing the intake I discovered the Champion iron heads that cost me $1700 from the first rebuild had magicly turned to bone stock. The heads were cc'd, polished,ported, oversized ss. valves , springs and yada yada. I had the same mechanic do the second rebuild and thought he seemed a very trustworthy compitant person. After the second rebuild I noticed the engine vibrated at mid rpm's and the oil pressure was droping. I went back several times he said as he had from the beginning that he gave a 10,000 mile guarantee. And that is was exactly how long it lasted and later on I heard many stories of all the engines that he rebuilt for other people that took there cars to the track only to have them towed home with a blown motor. a couple of mechanics in the bay down the way said they witnessed this guy using a pnumatic ratchet to install the main caps with, also used stock cranks in all his GN rebuids.Now I have to spend big mony on another set of ported and polished iron heads which I thought I had coverd. Can't trust anyone anymore I guess that why I'm doing it myself this time. Damit.BTW the block I'm using to build is out of a junkyard GN with the original crank.