brad horton

i sold my old 86 ford mustang to a buddy its a 2.3 carbed 4 speed car. it needed a timing belt so we took it apart and put the new belt on it. the timing was a little off so we got the timing light and as i started retarding it after it had been running off and on for about 5 min i got it to about 35 degrees advanced some where in there it started making a sound like rod knock. We had turned the motor over several times to be sure we had oil flow before we cranked it. after that we took the oil sender off and turned it over with the coil off and u can watch it pump oil.
what is this sound?
what should the timing be advanced to?
any help would be great!

sleeper_inc

Take the vacuum line off, plug it and turn till you get 10*, then plug the line back in, and your hearing destination, to much timing