Whoops totally forgot to put it in the post, sorry about that. They are J heads with a just a little bit of clean up work done. Also have Ferrera 2.02/1.60 Stainless valves and new Valve springs to support the cam. Will add that into post now
Going off your description..They could be peak flowing anywhere from 200-230 cfm. Not great, not horrible..just lacking and the no.1 in line for things to upgrade.
There is something wrong with the 60'
That's tune or chassis issue.