radiator cap

Posted by william george stocker On 2011/9/9 17:31:01

Can you Guys help me with a question i was asked, on a 1939, 8 cyl packard 120 four door.
what radiator cap should i buy? is the system on a 1939 packard pressurised or not? do i buy the cap with 7 lbs pressure or the flat cap type which fits on unpressurised system - any info on this, i need help, Bill