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Generally just normal wear and tear. Also if a rocker arm is too loose it may cause abnormal wear, loose hydraulics usually have a loud clicking sound to them. Another cause could be a plugged oil galley from the cam shaft bearing, if this happens, normally you will not have oil at the valve rocker arm.
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Does a 1991 Chevy 350 have a roller or flat tappet cam?
That would be the flat tappet cam in that engine.
How can I tell if a Chevy 350 is a roller cam or flat tappet?
If it has center hold-downs on the rocker covers, it's probably a roller cam.
You are building a 1990 350 Chevy you are running 9.35 to 1 flat top pistons the bore is .030 with a RV cam what plug gap do you recommend?
you can use stock 350 plugs
What causes low oil pressure in rebuilt 350 Chevy?
Not sure, i would say oil pump or cam bearings
Chevy 350 cam specs?
More information is required to answer this question properly. The best way is to pull the casting # off of the block. Is it a truck 350? car? year? roller? flat tappet?
What is the cam type of the 2009 Lexus IS-350?
The 2009 Lexus IS-350 has double overhead cam (DOHC).
What is the cam type of the 2012 Lexus IS-350?
The 2012 Lexus IS-350 has double overhead cam (DOHC).
What is the cam type of the 2013 Lexus IS-350?
The 2013 Lexus IS-350 has double overhead cam (DOHC).
What is the cam type of the 2006 Lexus IS-350?
The 2006 Lexus IS-350 has double overhead cam (DOHC).
What is the cam type of the 2007 Lexus IS-350?
The 2007 Lexus IS-350 has double overhead cam (DOHC).
What is the cam type of the 2010 Lexus IS-350?
The 2010 Lexus IS-350 has double overhead cam (DOHC).
What is the cam type of the 2011 Lexus IS-350?
The 2011 Lexus IS-350 has double overhead cam (DOHC).
