TT5.9mag, I'm considering a lot of different options. Compression, Cam, E85, Cubic inches.... Just trying to understand all this newer tech that is sooo different from the 80's & early 90's.
IMO, the new tech is old tech really but just pushed a little further on its limitations. Since the camshaft is the main topic spoken here, I’ll roll with that.
With the introduction of better equipment in the industry and it’s getting better all the time, the previous mentioned spintron helps a lot.
The ability to customize the lobe and push the lobe grind in directions and shapes like never before has helped a huge amount in getting aggressive with its design while also testing the valve train along with it.
It is my opinion that I honestly think that a custom cam can be ground for you without touching the heads for further power in order to drop your et.
The cam will be more focused on the task at hand.
Previously someone mentioned getting a Comp Cam. IF you can get to a actual cam designer there, your good.
But this is also why I mentioned Schneider cams. (Or other grinder of your choice.) It’s easier to speak with a grinder direct for a custom grind. While I like Comp Cams, never having a problem with there material, bigger companies can be a PIA.
Whatever route on a camshaft you take, my suggestion is to start with the cam.
Overall, it looks like your doing pretty good with what you have now and I think minor tweaks is all it will take without E85 or stroking the engine.
I’d refocus on what you have now and what could be easily replaced or massaged. Things like a better exhaust system, ported and matched intake manifold, even spark plugs. Heat range, gap, etc. The cars weight? Suspension & tire size.
Have fun!