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NoNeck · 06-03-2014, 06:58 PM

I'm not sure about the GM tablets, but I have seen the inside of a small block Chevy after using Bars Leak. It is not a pretty sight. The coolant passages in the heads were almost completely blocked and the water pump impellers were transformed into a single block of gunk. Also, the inlet side of the thermostat was 90% blocked. No wonder the truck was overheating. Just my 2¢.

You might want to check the back of the intake manifold. I have had several V-8s that leaked on the rear driver side. Especially if it's the stock intake and maybe has been on there since 1967. I think some stock intake gaskets were mismatched to the block flange right at that rear corner where the head/block/intake make contact.

POP

06-03-2014, 06:58 PM	#5
NoNeck Registered User Join Date: Jan 2011 Location: Chattanooga, TN Posts: 1,108	Re: coolant leak I'm not sure about the GM tablets, but I have seen the inside of a small block Chevy after using Bars Leak. It is not a pretty sight. The coolant passages in the heads were almost completely blocked and the water pump impellers were transformed into a single block of gunk. Also, the inlet side of the thermostat was 90% blocked. No wonder the truck was overheating. Just my 2¢. You might want to check the back of the intake manifold. I have had several V-8s that leaked on the rear driver side. Especially if it's the stock intake and maybe has been on there since 1967. I think some stock intake gaskets were mismatched to the block flange right at that rear corner where the head/block/intake make contact. POP __________________ 2016 RAM Laramie HEMI 1966 Fairlane GT/A, 390/335 HP If it costs you a dollar to make a friend, KEEP THE DOLLAR. If it costs you a friend to make a dollar, KEEP THE FRIEND.