Stock 6.0l head flow data
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Stock 6.0l head flow data
Here’s some results of a recent flow test of a #317 casting. The head looked to be pretty average as far as core shift goes. I tested the two center cylinders. Interesting to note how the second intake port tested flowed extremely well to .450” lift, then settled back down to it’s peak average. The test was performed on a SF600 flow bench.
Lift___Cyl1Int.____Cyl2Int.____Cyl1Exh.____Cyl2Exh .___Cyl2Exh w/out pipe
.100___64.8_______65.9_______56.6_______57.1______ ___53.3
.150___101.7______103.9______92.1_______92.1______ ___87.8
.200___142.1______141.8______113.1______116.1_____ ___111.6
.250___177.7______177.1______133.8______139.4_____ ___131.8
.300___204.3______203.4______152.1______157.8_____ ___146.8
.350___224.3______224.9______159.8______165.8_____ ___157.1
.400___233.5______242.9______171.6______175.8_____ ___164.9
.450___241.4______252.5______181.2______184.8_____ ___166.8
.500___250.0______247.0______190.6______200.4_____ ___174.2
.550___251.2______250.9______197.9______200.1_____ ___181.2
.575___253.0______251.1______199.3______202.1_____ ___183.0
.600___253.0______251.9______200.4______203.0_____ ___184.4
.625___252.2______252.2______200.9______204.1_____ ___184.8
.650___253.1______252.2______201.7______205.2_____ ___185.3
Intake runner volume = 208.5cc
Exhaust runner volume = 77.0cc
Combustion chamber volume = 72.4cc
Test bore dia. = 4.030”
The intake ports were tested with a radius flow plate and cyl. #1&2 exhaust ports were tested with a 2.0” stub pipe.
As soon as I get an intake manifold, I'll edit the post with the results.
Richard
Lift___Cyl1Int.____Cyl2Int.____Cyl1Exh.____Cyl2Exh .___Cyl2Exh w/out pipe
.100___64.8_______65.9_______56.6_______57.1______ ___53.3
.150___101.7______103.9______92.1_______92.1______ ___87.8
.200___142.1______141.8______113.1______116.1_____ ___111.6
.250___177.7______177.1______133.8______139.4_____ ___131.8
.300___204.3______203.4______152.1______157.8_____ ___146.8
.350___224.3______224.9______159.8______165.8_____ ___157.1
.400___233.5______242.9______171.6______175.8_____ ___164.9
.450___241.4______252.5______181.2______184.8_____ ___166.8
.500___250.0______247.0______190.6______200.4_____ ___174.2
.550___251.2______250.9______197.9______200.1_____ ___181.2
.575___253.0______251.1______199.3______202.1_____ ___183.0
.600___253.0______251.9______200.4______203.0_____ ___184.4
.625___252.2______252.2______200.9______204.1_____ ___184.8
.650___253.1______252.2______201.7______205.2_____ ___185.3
Intake runner volume = 208.5cc
Exhaust runner volume = 77.0cc
Combustion chamber volume = 72.4cc
Test bore dia. = 4.030”
The intake ports were tested with a radius flow plate and cyl. #1&2 exhaust ports were tested with a 2.0” stub pipe.
As soon as I get an intake manifold, I'll edit the post with the results.
Richard
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Originally Posted by mjhoward
Yes, but it will drop the compression about a point.
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It would take a milling of .060" to remove the 10cc necessary to get to the 5.3l chamber volume. That would cause some issues with pushrod length and possible intake manifold fit.
Richard
Richard