finally got the 4.6 running

[rammit11]

I broke my 4.6 in yesterday. I did the cam break in for about 25 min. 2000-2500. The engine never climbed over 210 on the temp gauge and holds around 40-45 psi oil when hot. I would however like to know if the stock factory s rocker arms are any quieter than the aftermarket ones(I am using aftermarket and they are not clacking but just have that sewing machine sound to them).

[SilverXJ]

Roller rockers can be a bit noisy.

[vashxj]

sounds like the same as mine it gets a little quieter after a little break in but mine is still there I have about 1200 mi. on it already

[SilverXJ]

It also matters what cam you are running. Cams with a faster rate will be noisy. Comp Cams 231 and 232 tend to be noisy.

[beiwulf]

Did this get any quieter after break in? How many miles now?

[rammit11]

just about 3000 miles now , seems to be getting a lot quieter , still has some noise but nowhere near what it was.