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cam specs?
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Author:  Avery [ Sat Aug 25, 2012 8:54 pm ]
Post subject:  cam specs?

i traded for a 415 sbc that has a solid roller cam in it... a buddy of mine tore it down and i dont know the cam specs to adjust the valves...ive looked everywhere i know to look to see if i can find any specs on it with no luck...can anybody help me please? thanks in advance for any help...thats 316BR4

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Author:  rick360 [ Sun Aug 26, 2012 12:24 am ]
Post subject:  Re: cam specs?

Looks like Comp Cams by the CC. The numbers don't show up in the lobes in my catalog.

I'd put it in a block and MEASURE it, then you'll know.

Rick

Author:  Avery [ Sun Aug 26, 2012 6:02 am ]
Post subject:  Re: cam specs?

how will that tell me to set the valves?

Author:  Ken0069 [ Sun Aug 26, 2012 8:39 am ]
Post subject:  Re: cam specs?

Avery wrote:
how will that tell me to set the valves?


Rick thinks it's a Comp Cams number so why not give them a call and see. Lots of cams are "special grinds" so that may not be an off the shelf cam. That would explain the number not showing up anywhere.

FYI, I've got two roller cams for my SBC and BOTH are custom grinds.

Author:  rick360 [ Sun Aug 26, 2012 2:43 pm ]
Post subject:  Re: cam specs?

You can tell the lash ramp by using a degree wheel and a dial indicator on a lifter. Rotate the engine around until just before the lifter is starting to move and take lifter rise readings every 2 degrees. You will see a consistent velocity (same lift change each 2 degrees) for a while before it takes off lifting much quicker. That slower constant velocity is the lash ramp and the amount of that x rocker ratio is the max lash you should ever use. Other than that it is a try it and see what the engine wants thing.

More than likely the recommended lash was in the .020 - .026" range.

Rick

Author:  Avery [ Tue Aug 28, 2012 6:24 pm ]
Post subject:  Re: cam specs?

thanks for the info guys...it is a custom ground cam from comp cams...its a 704 lift....

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