hey yall im new to the sight , i been obsessed with the camaro since i was 10 , but i jus got my first on a few weeks ago , its a 97 wit the 3.8 series 2 , well i paid $800 for it , the int and all is immaculate , jus hadda bit of a knock in the engine , which i knew rite away way the rod bearings , ok so i jus spent this past weekend replacing rod and main bearings , come to find out it was #5 that was spun , so i replaced it , and smoothed down the crank where it had spun , put it back togetehr and fired it up , before i hooked up the exaust , it sounded great , but once i did hook the exhaust up , its still knocking , and im having oil preasure issues , i need help lol any suggestions??

 

When a bearing spins inside of a rod, it stretches the end of the rod out, so that when you put a new bearing it fits too loose. This can allow the bearing to spin again or just allow it to knock due to excessive clearance. You need to either have a machine shop resize the rod, or put in a new one. Also check the crank journal for scoring, and for size using a mike. If the journal is scored the crank needs regrinding, if the journal shows excessive wear you may get away by using undersize bearings.

 

+1 He hit it right on the head. When a issue like this comes ups its normally better to play it safe and take the extra time and money to get every thing right the first time. It will save you a lot of money and time in the long run 9 out of 10 times.

 

ok i noticed something else, when it first sarts , it tapps till the engine idles down then it sounds perfect up intil it warms up then the oild preasure dropps and the tapping begins

 

What is your oil pressure like. Both cold and hot.

 

well cold its good , once it warms up , it drops , the when its warm and @ idle its al;most bottoms out , but increases as revs

 

Following up on what z28pete told you...
Stretched out rod end=excessive bearing play=low oil pressure.