degree'n a cam

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degree'n a cam

Post  Larry Williams on June 16th 2014, 1:27 pm

when setting up the installed cl   of a solid roller cam, is it better to lash the valve to specs .018 or zero lash it?
      cam specs call for an install cl @ 110    this seems like a lot compared to my small blocks.  ( 102 )   is this too much for a race only engine?
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Re: degree'n a cam

Post  rmcomprandy on June 16th 2014, 4:33 pm

Larry Williams wrote:when setting up the installed cl   of a solid roller cam, is it better to lash the valve to specs .018  or zero lash it?
      cam specs call for an install cl @ 110    this seems like a lot compared to my small blocks.  ( 102 )   is this too much for a race only engine?

For that measurement, it is best to get the lash after the lash ramp. Lash ramps can vary from .012" to around. 024" so knowing that last ramp number for that LOBE profile is is best.
Personally, I simply multiply .050" by the rocker arm ratio and lash it there for checking.

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Re: degree'n a cam

Post  c.evans on June 16th 2014, 8:55 pm

Is there anyway you can mount the dial indicator directly over the pushrod ( or pushrod side of the rocker arm) and read it from there. In essence what you would be dealing with then, is lobe lift and most cam cards give lobe lift specs.

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Re: degree'n a cam

Post  Larry Williams on June 16th 2014, 9:21 pm

c.evans wrote:Is there anyway you can mount the dial indicator directly over the pushrod ( or pushrod side of the rocker arm) and read it from there.  In essence what you would be dealing with then, is lobe lift and most cam cards give lobe lift specs.

Uncle Charlie

I finally did put it where you suggested. I couldn't get it to the specs recommended ( 110 ) I have a great appreciation for the danny bees like on my other motor now. the multi grooved lower gear are a pain to set up with a chain.


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