RE: Heater Core and overheat

[Doug Jacobsma <big_jake57@xxxxxxxxxxx>]

I've been running a 383 in my 63 Sport Fury for 25 years with the heater 
by-passed.  Only overheating problem I have ever had was radiator related.  
A very good pressure flushing cured that problem.  I run a 7 blade fan, no 
shroud.  Rule of thumb as I recall was if it overheats at low speed it's an 
airflow problem.  If it overheats at highway speed, then it's a fluid flow 
problem.  Old cars, old radiators, old engines sometimes need a good 
cleaning.  You might want to check for squishy, colapsing hoses.  (The 
spring inside can rust away, or some aftermarket ones dont have them)
Another thing that comes to mind, for the guys without A/C, running a water 
pump for an A/C car is a good idea too.
Just my .02 worth.

Jake
'63 Sport Fury 'vert

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