Hey all. So long story short. I did another cam change in my 496. I went back to the Voodoo 60204.

I took the heads to the machine shop to have the proper springs and spring pressures installed. I also had new viton valve stem seals installed. Spring cups were installed as well

If you watch the video you can hear a strange noise coming from the engine. I'm not sure what kind of noise it is? It sounds like its coming from the Rocker arms area.

http://i253.photobucket.com/albums/hh42/Ratbones2002/th_60204breakinweirdnoise.jpg (http://s253.photobucket.com/albums/hh42/Ratbones2002/?action=view&current=60204breakinweirdnoise.flv)


I did use this 60204 in the engine a year ago with the wrong valve springs but it never made this strange noise. The cam was taken out and I installed a Comp XE294. After 2,000 miles I decided I wanted a more street freindly cam so the 60204 went back in.

The cam was broken in with new lifters, EOS, and Rotella T. Valves were adjust 1/4 to 1/2 turn.

Any ideas??????????

Turn off the ac and listen.

boy it sure sounds real quiet except for that noise you're talking about. Did you muffle the mic on your camcorder?

I suspect you are going to want to pull the valve covers and have a look around. Dont mean to state the obvious but that definitely sounds like your valve train. Can't tell exactly where it's coming from in the vid but it almost sounds like your rockers are hitting the valve covers (I hope it is that simple).

BTW: real nice impala you have there. what compression are you running in the 496?

To me it also sounds like the rockers might be hitting the valve covers. Are you running stock arms or rollers?

To me it also sounds like the rockers might be hitting the valve covers. Are you running stock arms or rollers?

Thats what it sounds like to me as well

I'm with everyone else on rockers hittin the covers! Good luck!
Oh! by the way otherwise engine sounds great!

Bob

Thanks guys! I went out and got on her hard!!!!!! She screams up to 6,000rpm's. I'm so glad I finally did it right and took the heads in to a professional machine shop to have the springs installed at the right pressures, etc.

I fixed everything that I wanted to fix. Oil leak at oil pan, too big of cam, install valve seals, the oil consumption problem, smoking at start up and at idle in gear.

I fixed it all! I am STOKED!!!!!!!!

I'll post a vid of the 496 with the 60204 in a new thread.

Thanks guys! I went out and got on her hard!!!!!! She screams up to 6,000rpm's. I'm so glad I finally did it right and took the heads in to a professional machine shop to have the springs installed at the right pressures, etc.

I fixed everything that I wanted to fix. Oil leak at oil pan, too big of cam, install valve seals, the oil consumption problem, smoking at start up and at idle in gear.

I fixed it all! I am STOKED!!!!!!!!

I'll post a vid of the 496 with the 60204 in a new thread.

So was it rocker/valve cover interference? Inquiring minds want to know. Nice ride and a smooth idle as well.
Frank

Thanks guys! I went out and got on her hard!!!!!! She screams up to 6,000rpm's. I'm so glad I finally did it right and took the heads in to a professional machine shop to have the springs installed at the right pressures, etc.

I fixed everything that I wanted to fix. Oil leak at oil pan, too big of cam, install valve seals, the oil consumption problem, smoking at start up and at idle in gear.

I fixed it all! I am STOKED!!!!!!!!

I'll post a vid of the 496 with the 60204 in a new thread.

NO KIDDIN'.....what Frank said...where'd the noise go?

...and what CR you runnnin' ? (refer to my previous post)

Rockers will hit the metal baffle for the breathers if not REAL careful on a high lift cam.