WCCH/Edelbrock 215 LS1 Flow Data @ 28" Water:
Valve Lift
.100"
.200"
.300"
.400"
.500"
.550"
.575"
.600"
.625"
.650"

Intake Lift
67.6
138.0
207.2
256.6
291.1
302.3
305.1
307.5
310.7
310.7
Exhaust Lift
55.8
121.3
170.8
207.2
226.9
230.0
231.1
232.5
233.7
236.0
Valve sizes: Intake =  2.055"  Exhaust = 1.60"
Intake runner volume = 212cc
Exhaust runner volume = 82cc
Combustion chamber volume = 66cc
Test bore = 4.030"
Intake port tested with radius flow plate
Exhaust tested with stub pipe
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