Is New Cam Suppose To Be Hollow?
04-07-2006, 09:07 PM
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Is New F14 Cam Suppose To Be Hollow? I know that the stock LS1 cam is hollow but is my new F14 suppose to be? Because its not. Sorry if this sounds like a dumb question. I just want to be sure before I install it. Thanks 
Last edited by JoeMack; 04-08-2006 at 05:42 AM.
04-08-2006, 09:02 AM
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It might not be totally hollow but damn near close. My comp cam was that way. It had holes drilled in it both ends, but could not look through it. Hope this helps.
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04-08-2006, 01:05 PM
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There are holes drilled into either end approximately 5/8" deep. It's hard enough to get a hold of Futral during the week. It ain't happening on the weekend. Trying to get it installed over the weekend. I just don't know what to do
04-08-2006, 04:19 PM
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Originally Posted by JoeMack
I know that the stock LS1 cam is hollow but is my new F14 suppose to be? Because its not. Sorry if this sounds like a dumb question. I just want to be sure before I install it. Thanks
There are LS1 cam cores available in the aftermarket that aren't gun drilled. The main reason for this is that it costs quite a bit less for a non gun drilled cam. We won't sell them that way because I feel the extra rotational mass of a non gun drilled cam could be detrimental to the longevity of the valvetrain. GM didn't just drill them to be pretty. If there wasn't an advantage in drilling them you can be sure GM would have saved that money to give to their share holders.
04-08-2006, 04:48 PM
#16
Originally Posted by Geoff
There are LS1 cam cores available in the aftermarket that aren't gun drilled. The main reason for this is that it costs quite a bit less for a non gun drilled cam. We won't sell them that way because I feel the extra rotational mass of a non gun drilled cam could be detrimental to the longevity of the valvetrain. GM didn't just drill them to be pretty. If there wasn't an advantage in drilling them you can be sure GM would have saved that money to give to their share holders.
04-08-2006, 05:04 PM
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My old F13 cam was gun drilled whereas the new core I received on thursday is not. I spoke to allan about this a few weeks back and he said they are getting away from gun drilling because it costs more, as Geoff said above.
BTW, since I installed the new core, I dont have the "whistle" or "blower whine" anymore.
BTW, since I installed the new core, I dont have the "whistle" or "blower whine" anymore.
04-10-2006, 12:17 PM
#19
Originally Posted by Geoff
There are LS1 cam cores available in the aftermarket that aren't gun drilled. The main reason for this is that it costs quite a bit less for a non gun drilled cam. We won't sell them that way because I feel the extra rotational mass of a non gun drilled cam could be detrimental to the longevity of the valvetrain. GM didn't just drill them to be pretty. If there wasn't an advantage in drilling them you can be sure GM would have saved that money to give to their share holders.
04-10-2006, 12:19 PM
#20
Originally Posted by GuitsBoy
This is a valid point, but at the same time, taking weight out of the center of a cam does the least good. Rotational weight closes to the outside is the hardest to accelerate. Comparitively, weight onthe inside is much more easily accelerated. If you had a core produced that took the material out of the outer diameter of the cam, while retaining the same torsional rigidity, youd actually come out ahead. Aftermarket cams already remove a bunch of outer rotating weight just by having a smaller base circle. Removing a little more material from in between lobes and journals, and you could easily get a cam thats as easily accelerated as a stock cam. Aftermarket gun drilled cams may have enev less rotational weight, but if you can get to stock cam levels without gundrilling, its good enough for me. I dont see any tangible advantage at that point.