Weird noise after 4 speed install
I didn't think the valve train was loud, but I guess I have nothing to compare it to. I'll pull the plugs tonight and remove the valve covers and inspect.
Hang on a day or two, to see if others agree with me. It may just be my laptop.
Furthermore, I think Voodoo cams have a reputation of being loud.
Where did you install the O2's?
Are they on-line at idle?
Are the headers sealed both at the head and at the merges and the collectors?
Headers are like suction pumps. If they are not sealed, they will vacuum in air, which is guaranteed to upset the signal coming out of the O2.
Furthermore, that cam has a good deal of overlap, 52* by the math. At idle, the pipes could be suctioning plenum A/F charge right across the top of the piston. Of course that would upset the O2s as well.
IMO
the best idea is to shut the O2s off at idle and build an open-loop idle-tune without them.
