Interesting topic. I'm installing Vintage Air (VA) in my 69 bird and asked VA if a restrictor is needed for the heater core, which is inside the under dash evaporator assembly. The tech said the heater cores are tested at very high pressure and no restrictor needed. Is it for PSI or overall flow?
__________________
Will Rivera
'69 Firebird, 400/461, 290 Eddy D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears
'69 LeMans Vert, XS 350, #47 heads, TH400, 10 Bolt 3.23 gears, work in progress
‘66 Lemans, 455, 310 KRE D-Ports, HR 236/245, TH400, GV OD, 12 bolt 3.73 gears - see it here:
https://youtu.be/RP_s1wJKm_Y?si=K0NZxoTyaGcj8Dcb
|