Tmiles 1 Report post Posted November 11, 2018 I have 347 with Dart heads and a set of Hooker Comp ceramic headers. Was talking to Dart and they said no matter what gaskets I use these headers will eventually leak. So I called Hooker, they said they never heard of this issue. Anyone have this setup and any issues? Quote Share this post Link to post Share on other sites
lanky 44 Report post Posted November 11, 2018 What thickness flange are they? 5/16" ? Are the headers ports too small for the dart heads? Quote Share this post Link to post Share on other sites
Tmiles 1 Report post Posted November 11, 2018 Yes I believe they are 5/16" and the ports seem to match up fine Quote Share this post Link to post Share on other sites
barnett468 418 Report post Posted November 11, 2018 why did they say they will leak? of course the header mfg might say they never heard of this problem but if the head mfg says there is one, i would tend to believe them since they don't sell headers so they have nothing to gain by telling you this. Quote Share this post Link to post Share on other sites
Tmiles 1 Report post Posted November 11, 2018 They really didn't say why they would leak whrn I asked just that they will. Quote Share this post Link to post Share on other sites
barnett468 418 Report post Posted November 11, 2018 4 minutes ago, Tmiles said: They really didn't say why they would leak whrn I asked just that they will. can you post photos of both? did you ask them which headers will not leak? Quote Share this post Link to post Share on other sites
Tmiles 1 Report post Posted November 11, 2018 Tomorrow. They are installed in the car. Haven't started it up yet. Quote Share this post Link to post Share on other sites
