Overheating Issues

Overheating Issues - SB Duster

craigibc said
Hey Everyone,

Well I have been having problems with my car running HOT since I put it together. Its a 360 in a '71 Duster with a 3-core 340 radiator and a stock 7-blade fan. I recently installed a new 180* t-stat hoping it would fix the problem, when I went to remove the old one I noticed the top of it was covered in slimy rust. The car has 50/50 coolant & water, so I just assumed the t-stat was bad. I put the new one in and I am having the same problems. I don't currently have a shroud, but with the temperatures we are having right now, its a non-issue. Btw, the t-stat is installed with the pointy thing at the top, aka: correct.

I have no problem getting this radiator rodded out, but I want to make sure that my money will be spent wisely. Please let me know your .02.

- Jon D.

You're right down the freeway from me, cool man.

Rod the radiator if you have any rusty/brown sludge.
flush the sht out of the block, you might try rad flush with the upper hose disconnected and a garden hose down the filler neck feeding it.[before rad rodding]
You can put an extension on the upper so it clears the core support and just runs down the driveway or whatever.
Do the block flush before rodding the radiator.
Just put in the flush and run it till hot or 30 min.