The Ford Barn

40cpe · 03-07-2015, 11:59 AM

From what I can read, the specified lift on an 8CM cam is .338". I have one that measures .328" pretty consistently with a digital caliper. My question is: Is that considered significant wear? Would a regrind to 8CM specs produce noticeable improvement in power or efficiency?

JSeery · 03-07-2015, 12:05 PM

Not sure that would be easy to check with calipers, are you sure you know what the base circle is? If you are measuring the cam to get it you may still be on part of the ramp. I would think you would need to measure it with a dial indicator to be positive of what you have.

Binx · 03-07-2015, 12:14 PM

If the base circles are less than 1.165" it has been reground already. The good news is .328" lift is consistent with EAB/EAA cam but no way to tell for sure without degreeing. If you find someone who can grind a true 8CM I would certainly be interested.

Lonnie

40cpe · 03-07-2015, 01:57 PM

Quote:

Originally Posted by Binx

If you find someone who can grind a true 8CM I would certainly be interested.

Lonnie

KIWI Tony (KIWinUS) said in another thread that he has a stock Mercury grind, maybe it is the 8CM, he would have to fill us in on that .

Ol' Ron · 03-07-2015, 02:20 PM

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Wouldn't the EAC be a better cam?? I often wondered if the difference of the stock cams cann be measured in the output of the engines? what can a few degrees and a few thousands of lift do?

03-07-2015, 11:59 AM	#1
40cpe Senior Member Join Date: May 2010 Location: Star, MS Posts: 4,024	Cam wear From what I can read, the specified lift on an 8CM cam is .338". I have one that measures .328" pretty consistently with a digital caliper. My question is: Is that considered significant wear? Would a regrind to 8CM specs produce noticeable improvement in power or efficiency?

03-07-2015, 12:05 PM	#2
JSeery Member Emeritus Join Date: Nov 2012 Location: Wichita KS Posts: 16,132	Re: Cam wear Not sure that would be easy to check with calipers, are you sure you know what the base circle is? If you are measuring the cam to get it you may still be on part of the ramp. I would think you would need to measure it with a dial indicator to be positive of what you have.

03-07-2015, 12:14 PM	#3
Binx Senior Member Join Date: Oct 2011 Location: Gloucester VA Posts: 1,042	Re: Cam wear If the base circles are less than 1.165" it has been reground already. The good news is .328" lift is consistent with EAB/EAA cam but no way to tell for sure without degreeing. If you find someone who can grind a true 8CM I would certainly be interested. Lonnie

03-07-2015, 02:20 PM	#5
Ol' Ron Senior Member Join Date: May 2010 Location: Chester Vt Posts: 8,861	Re: Cam wear Sponsored Links (Register now to hide all advertisements) Wouldn't the EAC be a better cam?? I often wondered if the difference of the stock cams cann be measured in the output of the engines? what can a few degrees and a few thousands of lift do?