Re: Block Coolant Leak Repair???
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Mr.Nickey Nova</div><div class="ubbcode-body">GM sells a product called (Cooling System Seal Tabs) part# 12378254. Used it in my 05 pickup when i had a little coolant leak, couldn't tell where it was coming from,possible head gasket. Worked like a charm and that was five years ago.It's made out of some kind of vegetable formula that seals minor leaks. You can get it at your local Chevrolet dealer, give it a try...</div></div>

I had an 83' Hurst Olds with the 307 HP engine -- developed a coolant leak at the right front corner of engine between the intake and head ... used the seal tabs and they cured the problem. TAZ

Re: Block Coolant Leak Repair???
 

Did you tap the threads out at all? Pipe thread is tapered.

Jason

Re: Block Coolant Leak Repair???
 

I am thinking I will get some of the tablets and that will get through me through the summer. The car won't be driven much, but then next winter when I can take my time, I will carefully pull the head and have a machine shop weld and retap the hole. Thanks