Quote Originally Posted by fun4me View Post
What about the pellets GM used to put in the Cadilliac radiators?
that was for the the alum block with wet iron sleeves with rubber O rings that had a very poor design that would leak if you look at them wrong .engine were Junk ... the alum dust will work just fine or goodson and sliver seal sell pellets for re builds drop them in the block for the just in case deal . sealers are abit over kill i think for this if one head bolt is only leaking . he must of fixed it its been some time. the header bolts is a nother deal were world just drilled the ex bolts to deep and can seep if you read world tec sheet on there heads they tell you must use sealer on the ex bolts