hello...As Crockett stated, this epoxy works wonders-my daily driver work truck 292 has epoxy along with the PES lumps/plates-this head is almost 3 yrs old and no problems -what i have learned from many head specialists is this epoxy is a great invention....
On the heads I have worked on, I use both the PES lumps/plates and epoxy-this is part of trick to get a high flowing intake port-
There is an engine builder here in Nashville that uses a new high temp epoxy on exhaust ports- I have been monitoring this for a while-
