Superflow 600 Numbers
07-20-2011, 07:36 PM
#1
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Superflow 600 Numbers These heads came out of a 95 Buick Roadmaster.
STOCK:
valve lift cfm
.100------------58.2
.200------------105.4
.300------------151.6
.400------------178.8
.500------------187.5
After some mild port work:
valve lift cfm
.100-----------58.4
.200-----------100.2
.300-----------154.2
.400-----------187.4
.500-----------205.2
Numbers are from a Superflow 600. All flow data is at 28 inches of H20. All numbers are intake i have not had a chance to test the exhaust side yet. These numbers just seem a little low to me. Does anyone have any flow numbers for stock cast iron heads?
STOCK:
valve lift cfm
.100------------58.2
.200------------105.4
.300------------151.6
.400------------178.8
.500------------187.5
After some mild port work:
valve lift cfm
.100-----------58.4
.200-----------100.2
.300-----------154.2
.400-----------187.4
.500-----------205.2
Numbers are from a Superflow 600. All flow data is at 28 inches of H20. All numbers are intake i have not had a chance to test the exhaust side yet. These numbers just seem a little low to me. Does anyone have any flow numbers for stock cast iron heads?
07-20-2011, 07:43 PM
#2
These heads came out of a 95 Buick Roadmaster.
STOCK:
valve lift cfm
.100------------58.2
.200------------105.4
.300------------151.6
.400------------178.8
.500------------187.5
After some mild port work:
valve lift cfm
.100-----------58.4
.200-----------100.2
.300-----------154.2
.400-----------187.4
.500-----------205.2
Numbers are from a Superflow 600. All flow data is at 28 inches of H20. All numbers are intake i have not had a chance to test the exhaust side yet. These numbers just seem a little low to me. Does anyone have any flow numbers for stock cast iron heads?
STOCK:
valve lift cfm
.100------------58.2
.200------------105.4
.300------------151.6
.400------------178.8
.500------------187.5
After some mild port work:
valve lift cfm
.100-----------58.4
.200-----------100.2
.300-----------154.2
.400-----------187.4
.500-----------205.2
Numbers are from a Superflow 600. All flow data is at 28 inches of H20. All numbers are intake i have not had a chance to test the exhaust side yet. These numbers just seem a little low to me. Does anyone have any flow numbers for stock cast iron heads?
The numbers by themselves seem low, but flow benches are so easily skewed its not even funny...what was the bore size and fixture type?
