Re: Clearing badly corroded water jackets???
Just use something like a file or screw driver and put in the hole and scrape off as much as you can. Then just run a radiator sock in your top hose for a while to catch anymore rust getting into your radiator. Also, after taking off the heads, there will be quite a bit of old head gasket stuck to block. I just buy a packet of stanley knife blades(6 inch long ones) and after a bit of practice, you can remove whatevers on there quite easily. Then just wip clean with some metho just before fitting new heads/gaskets ect.
10.70 @ 125.00 on the black fun top
408 Cube Cleveland.