Lots of info to digest there...probably stick to the 45° seat, simply because I have goodson multiangle cutters allready, although I do have a sioux stone setup as well, and I like to touch the seats with a stone after the cutters anyway.
Yeah, if you have the tooling already you might as well use it.
Not sure what cutters you’re have, but you might be able to use a 1.550 or 1.580 exhaust valve and your 45. You’ll only know if you verify that.
When TF developed their head, they cut the exhaust valve size down to 1.580 and they didn’t do it to save money on valves. I can’t emphasize how bad a big exhaust valve is for a good exhaust port. The port on OE heads sucks so bad a 2 inch exhaust valve probably wouldn’t kill it. Ok, I embellished that a bit, but that’s what it is.
The bummer is not having a test head. I’m betting even with a 45* seat the 2.055 valve won’t break over as fast or as much as a 2.08 valve will.
I’m not pathological about break over, but I like to eliminate as much or all of it if I can.
