Low water pressure
 

Hi gang....
99' HP500s (with circ pumps) , gauges only showing 4 and 8 psi of water pressure at 3200rpm. I rerouted new hoses and plumbed them in the thermostat housing instead of the block to keep debris out of the lines. Does anyone know if the pressure going thru the housing would be less than the block?? The gauges ddnt work before so trying to figure the system out...
Thnx!!
N