I'm running the stock radiator in my 49 AD with a SBC. Had the radiator gone through and cleaned up. Thermostat is working. Flex-a-lite fan with shroud.
If the truck is running at idle the water temp seems to stabilize at about 190 but if I bring the RPMs up to 1750-2000 or am driving, the temp keeps climbing to 250 or I shut it down.
Seems like it is getting some flow but not enough?
Should I go with one of the hi flow (30-40% more) pumps?
With the advice received here I went on ebay and bought a Champion 3 row aluminum radiator. Problem solved!
Last edited by Baba; 03/08/2013 4:31 PM.
