Motor knock with good oil pressure?

[twfs]

Hi all I just recently rebuilt a 87 5.0 motor for my 67 cougar. The block is bored .030 and the crank is turned .010/.010. I got about 75 miles and now I can hear a knock coming from the motor. It sounds kind of like a rod knock to me but the question I have is could a rod be knocking with a little over 60 pounds of oil pressure and when it warms up to operating tempature 50 to 55pounds this is with a aftermarket gauge. Car does have a c4 checked tourque converter nuts and they were all tight noise seems to get louder when you let off the gas. I can't ever remember having a motor knock with good oil pressure before. I put a new 50 oz balancer and flywheel on it and changed the distrbuter gear for the factory roller cam and just changed the oil and didn't see anything coming out when i drained it. motor also has the manual fuel pump now I had researched and read that somes time they can make a noise like a rod knocking. Please help thanks in advance

 

[mwood]

Do you have easy access to pull the valve covers and oil pan? Seams like you could eliminate alot right there. Pulling the heads would be the next thing I can think of.

 

[twfs]

Thanks for the reply Yeah I can get the pan off with the motor still in the car I just hope the crank is still ok

 

[Wildstringer]

If it is a rod knock, you can tell which cylinder it is by pulling the wires while the car is running. When you pull the wire to the cylinder that is knocking the noise will get quieter or go away depending on how loud it is from the start. Of coarse make sure you use some insulated pliers or the car won't be the only thing knocking.

 

[BYRDPE]

^ lmao

 

[wv109323]

You said you changed the oil. I would cut the old oil filter apart and look for metal in the filter. I would run a small magnet in the bottom of the oil pan also.