For ls1(5.7) heads milled .030 - what compression?
04-24-2003, 08:37 AM
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For ls1(5.7) heads milled .030 - what compression? I have the 5.7 ls1 stage II GTP heads milled to .030. I was wondering what compression that would be and I currently am running the B1 cam specs of 221/221 .558 on a 114lsa.
If I want to go more aggressive on the cam, how high can I go considering the p/v clearance. I'm thinking I will have to clay it now matter what.
One of the cams I'm looking at is the TR224 on a .563 with a 112 lsa. Any other ideas??
thanks,
steve <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
If I want to go more aggressive on the cam, how high can I go considering the p/v clearance. I'm thinking I will have to clay it now matter what.
One of the cams I'm looking at is the TR224 on a .563 with a 112 lsa. Any other ideas??
thanks,
steve <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
04-24-2003, 08:51 AM
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Re: For ls1(5.7) heads milled .030 - what compression? You should be at 10.8:1 with a .030" mill. Also I will have a Tr224 cam available in the next week or so if you are interested.
04-24-2003, 09:21 AM
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Re: For ls1(5.7) heads milled .030 - what compression? 5.7L heads:
0" mill (stock) = 10.1:1
.010" = 10.333:1
.015" = 10.450:1
.020" = 10.567:1
.025" = 10.683:1
.030" = 10.800:1
.035" = 10.917:1
.040" = 11.033:1
.050" = 11.267:1
.060" = 11.500:1
0" mill (stock) = 10.1:1
.010" = 10.333:1
.015" = 10.450:1
.020" = 10.567:1
.025" = 10.683:1
.030" = 10.800:1
.035" = 10.917:1
.040" = 11.033:1
.050" = 11.267:1
.060" = 11.500:1
