Posted by The Other Ross on Tuesday, February 05, 2002 at 9:11PM :
In Reply to: 4 core radiator posted by Jim Branson on Monday, February 04, 2002 at 9:03PM :
Went through this same problem with my 440 conversion,tried everything previously mentioned.The final thing that worked best was a complete accessory drive off a '78 440
w200 with air,100 alt. the works,this was a complete unmolested factory setup.I don't know if it was the A/C water pump or the pully ratios or what but barring a leak my truck runs cool.