OE heads from my 96 Cobra. Stage 3 ported & flow tested by JDM Engineering. Stainless Steel valves. Comp Cams beehive springs #26123-32 & titanium retainers #798-32. Combustion chambers & exhaust ports have been high temp ceramic coated. Complete refresh just done by L&M engines with all new exhaust guides, seals & competition valve grind. Heads have not been run since refresh. The chambers & exhaust ports still have some carbon because blasting them may have damaged the coating.
These heads were used on my Vortech supercharged 96 Cobra. With stock cams they made 630rwhp. Exhaust cam journals on one head have been precision repaired by Heads Up Inc. in Aubrun WA and has been working perfectly. A few exhaust manifold and timing cover threads have been rethreaded with heli-coil inserts. Spark plug threads are perfect. Close to $4000 invested in these heads. No cams included. Still in the shipping boxes.