Flow test of an AMC 3196291C casting cylinder head.
These came on 1970 AMC 360 and 390 and maybe early 71 401.
Intake Valve: 2.025"
Exhaust Valve: 1.68"
Stock Ports: No Port Work at All
The seats look like a standard valve job, not a competition valve job.
Tested at 28" Water
Intake had a clay radius inlet.
Exhaust had a 1 5/8" stub.