Black Cam Lobes?
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Senior User
Joined: Mar 2006
Posts: 167
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Black Cam Lobes?
I picked up my new cam today. I opened the box when I got home and all the cam lobes ARE BLACK, not polished WTF?
I guess I'll call the shop in the A.M. to find out what's up with that
Anybody else have that happen?
I guess I'll call the shop in the A.M. to find out what's up with that
Anybody else have that happen?
Junior User
Joined: Dec 2005
Posts: 59
Likes: 0
Don't bother. It's a surface treatment (Parkerizing I think) that holds the oil and helps to break in the lobe to lifter mating surfaces. All new cams have it. It will wear down to a nice polished appearance as you do your initial run in. Make sure you use a high zinc content oil or use a zinc additive.
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Senior User
Joined: Mar 2006
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Originally Posted by know_fear
Don't bother. It's a surface treatment (Parkerizing I think) that holds the oil and helps to break in the lobe to lifter mating surfaces. All new cams have it. It will wear down to a nice polished appearance as you do your initial run in. Make sure you use a high zinc content oil or use a zinc additive.
What oil would you recommend?
Posting Legend
Joined: Sep 2001
Posts: 30,255
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Check the oil and lube forum but I believe it is recommended to use Diesel engine oil. The cam manufacturers instructions should mention it also.
BTW, It IS called Parkerizing.
http://www.wordwebonline.com/search....&w=Parkerizing
BTW, It IS called Parkerizing.
http://www.wordwebonline.com/search....&w=Parkerizing
Last edited by Torque1st; Feb 28, 2007 at 11:51 PM.
Hotshot
Joined: Dec 2003
Posts: 18,423
Likes: 9
From: iowa
Eric is correct I use rottella 15w-40 oil for initial break in and also be sure to put some cam break in lube on each lobe before installing. also you can run other oils but put in a can of GM EOS that will add the zinc too.
Hotshot
Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
The Black is a parkerized finish meant to let the cam lobe spin the lifter in it's bore. No spin = sure death in a few minutes run time for both cam and lifter. So too much lube is as bad as not enough.
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