Need Help with My Heads!
07-31-2007, 10:45 PM
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Need Help with My Heads! Well, I bought a set of Livernois Stage 1 LS6 heads, and had them deck .030 to bring them to 62cc???, but some how they where decked another .025 before I received them. So I had them cc'd to check and see what they are because I was having PTV problems, and they came to 59cc. The cam Im running is the Torquer 2.
So what will that do with my compression?
Will I be able to run that on the street with 93 pump gas?
One more question what head gasket should I be running? I already bought new GM gaskets for it but I thought I would ask?
So what will that do with my compression?
Will I be able to run that on the street with 93 pump gas?
One more question what head gasket should I be running? I already bought new GM gaskets for it but I thought I would ask?
08-01-2007, 07:41 AM
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Stock thickness GM gaskets?
I have a feeling you're SOL. Just a quick calculation with the TR224 (a much smaller cam) and a 59 CC head put me at 11.80 SCR and 9.23 DCR which is much too high for pump gas. (8.4-8.5 on 91 octane gas, and 8.7-8.8 on 93.) If I get the specs for your cam I'll run them but its not looking good.
I have a feeling you're SOL. Just a quick calculation with the TR224 (a much smaller cam) and a 59 CC head put me at 11.80 SCR and 9.23 DCR which is much too high for pump gas. (8.4-8.5 on 91 octane gas, and 8.7-8.8 on 93.) If I get the specs for your cam I'll run them but its not looking good.
Last edited by radkon; 08-01-2007 at 07:46 AM.
08-01-2007, 08:10 AM
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I think that you made a mistake LS6 heads are 64cc stock, a .030" mill would take them down to about 60cc.
I ran a check on your set up with piano prodigy's DCR calculator and with a .052 gasket, I got 11.49 SCR and 8.70 DCR, that is for a 112+2 cam and no flycuts, If you flycut (which you pretty much have to do at this point), your can run a little thinner head gasket. It seems about like a perfect set up to me.
I ran a check on your set up with piano prodigy's DCR calculator and with a .052 gasket, I got 11.49 SCR and 8.70 DCR, that is for a 112+2 cam and no flycuts, If you flycut (which you pretty much have to do at this point), your can run a little thinner head gasket. It seems about like a perfect set up to me.
08-01-2007, 08:25 AM
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Originally Posted by Summit2345
Well, I bought a set of Livernois Stage 1 LS6 heads, and had them deck .030 to bring them to 62cc???, but some how they where decked another .025 before I received them. So I had them cc'd to check and see what they are because I was having PTV problems, and they came to 59cc. The cam Im running is the Torquer 2.
So what will that do with my compression?
Will I be able to run that on the street with 93 pump gas?
One more question what head gasket should I be running? I already bought new GM gaskets for it but I thought I would ask?
So what will that do with my compression?
Will I be able to run that on the street with 93 pump gas?
One more question what head gasket should I be running? I already bought new GM gaskets for it but I thought I would ask?
LS6 heads should be milled .005/.006 " /cc. Your .030" mill gives you a 59cc chamber.
.030/.006 = 5 ccs, 64-5 = 59 cc
08-01-2007, 11:24 AM
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Originally Posted by mudflap1989
I think that you made a mistake LS6 heads are 64cc stock, a .030" mill would take them down to about 60cc.
I ran a check on your set up with piano prodigy's DCR calculator and with a .052 gasket, I got 11.49 SCR and 8.70 DCR, that is for a 112+2 cam and no flycuts, If you flycut (which you pretty much have to do at this point), your can run a little thinner head gasket. It seems about like a perfect set up to me.
I ran a check on your set up with piano prodigy's DCR calculator and with a .052 gasket, I got 11.49 SCR and 8.70 DCR, that is for a 112+2 cam and no flycuts, If you flycut (which you pretty much have to do at this point), your can run a little thinner head gasket. It seems about like a perfect set up to me.
