Ok, long time ago my engine a 1965 289cid small ford
started making a noise, its kinda likea toc toc toc toc toc (you get the idea).
So when its idling you can hear it very strong, not so fast, but when yuo start reving the engine the noise goes up on speed and then disappears..
First i thougnt it was a bad lifter so i did the following.
I changed the stock rockers and replaced them with roller rockers, changed the pushrods as well, and the lifters, and because i opened the top of the engine to change the lifters i replaced the intake maniforld.
I set the correct valve lash for the lifters/pushrods/rockers correct geometry.
so i put everything back together and the noise continued...
I started taking one spark plug cable a time with the engine running to take preassure of each cylinder and to see if a piston is broken or something.
But no luck. The engine makes the same noise even when took the pressure of the cylinders....
Any Ideas or ways of checking???