01-02 6.0L Truck heads?
05-10-2002, 09:13 AM
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Re: 01-02 6.0L Truck heads? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by mrgto:
<strong>Those are patterned after the LS6 heads, correct? These would make a good choice to port and install on a LS1? Yes?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Yes these are a much lower cost alternative to LS6 heads. The biggest drawback to doing this is that they have 72cc chambers. You will have to mill these extensively to get an increase in compression on a stock cu. in. motor.
Shane
<strong>Those are patterned after the LS6 heads, correct? These would make a good choice to port and install on a LS1? Yes?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Yes these are a much lower cost alternative to LS6 heads. The biggest drawback to doing this is that they have 72cc chambers. You will have to mill these extensively to get an increase in compression on a stock cu. in. motor.
Shane
05-10-2002, 09:56 AM
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Re: 01-02 6.0L Truck heads? Thanks Jason. That is not a huge difference. Go from what, 10:1 to around 9.5:1? I could bump it up with a thinner head gasket or leave as is for future SC/Turbo/Nitrous mods.
05-10-2002, 11:24 AM
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Re: 01-02 6.0L Truck heads? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by mrgto:
<strong>Thanks Jason. That is not a huge difference. Go from what, 10:1 to around 9.5:1? I could bump it up with a thinner head gasket or leave as is for future SC/Turbo/Nitrous mods.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">mrgto,
If you're going to port them anyway, have them milled by the head porter. You'd only have to mill them about .025" to keep 10.1:1 compression. You can safely go .050" and bump up the compression a bit. I really think you would notice .6 point drop in compression in a N/A application.
Shane
<strong>Thanks Jason. That is not a huge difference. Go from what, 10:1 to around 9.5:1? I could bump it up with a thinner head gasket or leave as is for future SC/Turbo/Nitrous mods.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">mrgto,
If you're going to port them anyway, have them milled by the head porter. You'd only have to mill them about .025" to keep 10.1:1 compression. You can safely go .050" and bump up the compression a bit. I really think you would notice .6 point drop in compression in a N/A application.
Shane
05-10-2002, 11:50 AM
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Re: 01-02 6.0L Truck heads? I have a set of 6.0L heads ported by me that will be going on next week.
I am going to have the the machine shop take off 0.030 and then cc the chambers to see where I am at. I am using Ferrea valves and hopefully they will help to bump C/R some since they are flat faced and not dimpled like the stockers.
I have heard that if you mill off too much your cam choices will be limited unless you cut reliefs into the pistons. I am using the T1 cam currently.
Also thinner head gaskets are $72 EACH <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> . I wasn't able to find any cheaper thin head gaskets.
You have to use 6.0 size gaskets and even the stock GM gaskets are more expensive than the 5.7's.
Anybody else have any info on these heads?
I am going to have the the machine shop take off 0.030 and then cc the chambers to see where I am at. I am using Ferrea valves and hopefully they will help to bump C/R some since they are flat faced and not dimpled like the stockers.
I have heard that if you mill off too much your cam choices will be limited unless you cut reliefs into the pistons. I am using the T1 cam currently.
Also thinner head gaskets are $72 EACH <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> . I wasn't able to find any cheaper thin head gaskets.
You have to use 6.0 size gaskets and even the stock GM gaskets are more expensive than the 5.7's.
Anybody else have any info on these heads?
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05-11-2002, 12:22 AM
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Re: 01-02 6.0L Truck heads? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Speed Demon:
<strong>I have a set of 6.0L heads ported by me that will be going on next week.
I am going to have the the machine shop take off 0.030 and then cc the chambers to see where I am at. I am using Ferrea valves and hopefully they will help to bump C/R some since they are flat faced and not dimpled like the stockers.
I have heard that if you mill off too much your cam choices will be limited unless you cut reliefs into the pistons. I am using the T1 cam currently.
Also thinner head gaskets are $72 EACH <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> . I wasn't able to find any cheaper thin head gaskets.
You have to use 6.0 size gaskets and even the stock GM gaskets are more expensive than the 5.7's.
Anybody else have any info on these heads?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I had to use the Fel-Pro 1041's on my engine as well. According to Lingenfelter, for every .005" you mill off of LS1/LS6 family heads, you take out 1CC of chamber volume. Also, you can safely mill .050". You're right about the valve relief part. It's not really difficult to do with the Isky tool, especially on stock pistons but with forged, you'd better buy 2. By the time we got to the 4th piston on my buildup, the cutter was TOAST... <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />
Shane
<strong>I have a set of 6.0L heads ported by me that will be going on next week.
I am going to have the the machine shop take off 0.030 and then cc the chambers to see where I am at. I am using Ferrea valves and hopefully they will help to bump C/R some since they are flat faced and not dimpled like the stockers.
I have heard that if you mill off too much your cam choices will be limited unless you cut reliefs into the pistons. I am using the T1 cam currently.
Also thinner head gaskets are $72 EACH <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> . I wasn't able to find any cheaper thin head gaskets.
You have to use 6.0 size gaskets and even the stock GM gaskets are more expensive than the 5.7's.
Anybody else have any info on these heads?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I had to use the Fel-Pro 1041's on my engine as well. According to Lingenfelter, for every .005" you mill off of LS1/LS6 family heads, you take out 1CC of chamber volume. Also, you can safely mill .050". You're right about the valve relief part. It's not really difficult to do with the Isky tool, especially on stock pistons but with forged, you'd better buy 2. By the time we got to the 4th piston on my buildup, the cutter was TOAST... <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />
Shane
05-12-2002, 10:52 AM
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Re: 01-02 6.0L Truck heads? I was told you use LS1 Head Gaskets if you get the heads milled down. Does anyone know for sure. Im getting ready to put my 6.0L heads on and need to know for sure.
05-12-2002, 11:13 AM
#10
Re: 01-02 6.0L Truck heads? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by mrgto:
<strong>Those are patterned after the LS6 heads, correct? These would make a good choice to port and install on a LS1? Yes?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The only consideration is that if you mill the larger chambered head to achieve a tighter combustion chamber, you will loose some of the dynamics of the chamber. Its better that the chamber is designed/cast for the compression ratio, and not simply by milling. The LQ9 type heads in my mind are the best for forced induction applications.
<strong>Those are patterned after the LS6 heads, correct? These would make a good choice to port and install on a LS1? Yes?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The only consideration is that if you mill the larger chambered head to achieve a tighter combustion chamber, you will loose some of the dynamics of the chamber. Its better that the chamber is designed/cast for the compression ratio, and not simply by milling. The LQ9 type heads in my mind are the best for forced induction applications.
05-12-2002, 10:08 PM
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Re: 01-02 6.0L Truck heads? Milling of this magnitude will not appreciably alter the combustion chamber shape. There is also the benefit of added quench... <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Shane
Shane
05-13-2002, 05:03 PM
#13
Re: 01-02 6.0L Truck heads? You guys might want to be careful about milling the heads too much. If you mill the heads too much then the intake won't fit in there. I think the most you can mill the heads is .090" to where this becomes a problem, but I'm not sure.
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