help!

[slim]

I have a 96' firebird formula. It has every option possible (except for t- tops) including the LT1 corvette engine, the 4- speed automatic and the optional rear-end (3.83?) and suspension. Recently I had to get get a new timing belt so that it would pass emissions. When I did this it gave the car ten times the power it ever had ( i bought the car used) then the next day there was a squealing noise coming from the engine I guess it was the fan belt? any way i took it back to the guy and he said hed drive it a round and i could pick it up the next day. when i picked it he told me that it was knocking (which it wasnt doing before i brought it back). Any way I was wondering what would cause it to knock and how to fix it. Any thing would be helpful Thanks!

[Chryco Psycho]

the sqeal Could be a idler pulley going bad & now the brg has failed causing a knocking sound Or the guy drove the crap out of iut & hurt the engine

[slim]

alright , well  with the help of a little wd-40 the squealing went away. So now i have to figure out what is causing the knocking... any ideas

[700HPCharger]

Find where the knocking is coming from. Was the place you took it to an actual shop? sometimes these places have more liability than a regular shad tree mechanic, and you might be able to make it a legal matter, if in deed it started knocking because of something they did, while the car was in thier possesion. I am not big on taking people to court but when it comes to some shop abusing you car, I start to look at things differently