Update:
Did more work on the head last night. Was able to cut the intake runners down a little and knife them. I figured that since the JMF is single I would go for it. I am not sure if it helps or hurts but it was free and I was there. I gasket matched it to the
AP SINGLE RUNNER SUPER TIG. I am hoping this helps with flow but I am not a pro and it was like 50$ for me to do this so I did it. It took me about 5 hours total to do the entire project. Could I spend more time chasing that 10%, yes, but I won't.
I also did a little bowl work on the small intake runner that had a pretty pronounced lip on it.
[doublepost=1550085358][/doublepost]Also side note. I used the
Harbor Freight 1/4 in. Air Die Grinder. Which worked great with the smaller AL bit but I bought a longer one to do the intake side and the HF tool is so out of balance it would just not work at all. The bit would flop all over the place and then loosen and fly out. It actually ended up being a good thing as I did not need to use such a long bit. Also a note on the
sanding stuff. BE GENTLE, I was pretty heavy with the AL bit but when I tried to add pressure the sanding bit I kept breaking the shanks. Let the sander do the work for you.