03-14-2004, 02:03 PM
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CC Member
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Join Date: Jan 2002
Location: So. Cal.,
Posts: 18
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Wiped a Cam Lobe...What Next?
I noticed a valvetrain tapping noise in my professionally rebuilt stroked 427 CO. The engine was broken in and dyno'd by the builder (490HP at 5,400), and I have run it for less than 2 hours total.
I pulled the valve covers and noticed that the #7 Intake valve had over 1/8" of lash. Used a dial indicator on that cylinder and found only .200" of gross valve lift on this valve. Cannot pull this lifter out. Noticed a very small amount of fine metal particles in the oil filter medium and oil pan. I presume the lobe has gone flat.
What do I need to do next (other than the replacement of the cam/lifters) to properly fix this? Has the filter trapped the metal particles or could they have worked their way to the bearings and oil passages? Should I completely tear down the engine, have the block hot-tanked, replace bearings, etc? I do want to do this right, but not incur unnecessary costs. Thanks.
Last edited by Redd Snake; 03-14-2004 at 02:06 PM..
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