----F/S Freshly Ported and Polished 5.3 Heads----
07-03-2010, 11:13 AM
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----F/S Freshly Ported and Polished 5.3 Heads----
As the title says I have a set of freshly ported and polished 5.3 (862 castings) for sale. A customer traded them in on a set of my ported/milled LS6 heads. I choose not to rework any cylinder heads that have been previously ported so just trying to get my money back from the partial trade. I put them on my superflow flow bench and they were 35+CFM at .600 lift compaired to a stock 5.3 head so would make for a great budget head on a 5.3 or 4.8 truck. The heads come with the stock GM 5.3 valves. -Sorry no valve springs- willing to take $425 and if you have a set of STOCK LS1 or 5.3 heads and exchange them I will let them go for $350
-Matt-
-Matt-
07-04-2010, 10:30 PM
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As the title says I have a set of freshly ported and polished 5.3 (862 castings) for sale. A customer traded them in on a set of my ported/milled LS6 heads. I choose not to rework any cylinder heads that have been previously ported so just trying to get my money back from the partial trade. I put them on my superflow flow bench and they were 35+CFM at .600 lift compaired to a stock 5.3 head so would make for a great budget head on a 5.3 or 4.8 truck. The heads come with the stock GM 5.3 valves. -Sorry no valve springs- willing to take $425 and if you have a set of STOCK LS1 or 5.3 heads and exchange them I will let them go for $350
-Matt-
-Matt-
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07-06-2010, 02:57 PM
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Just put the heads on the bench and on Intake port 1 flow numbers are
.100 64cfm
.200 136cfm
.300 192cfm
.400 231cfm
.500 242cfm
.600 256cfm
Those numbers are right on what a stock LS6 head flows. These would be great for a budget build with a 5.3 truck because you wouldnt have to sacrifice compression to have a better flowing head.
-Matt-
.100 64cfm
.200 136cfm
.300 192cfm
.400 231cfm
.500 242cfm
.600 256cfm
Those numbers are right on what a stock LS6 head flows. These would be great for a budget build with a 5.3 truck because you wouldnt have to sacrifice compression to have a better flowing head.
-Matt-
Last edited by matt510; 07-06-2010 at 03:22 PM.
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