ET Report Card on the Speedmaster Heads

Time slip is pretty decent. ET/MPH are better than the 60' now, so there is time down low. You mentioned a pop. If you took .05-.08 out of the 60', you'd be right at 13.00 is my guess.

There's likely 2-3 tenths in the tune right now.
I'm sure I could pull a tenth or two out in just the tune. Stock converter and 2.94's makes the 60 ft a challenge, and I think mid 1.8's is pretty satisfactory. I have a big problem with only a 19 mph pick up the last 1/8 mile. There was a head wind of at least 10 mph or better, so maybe that effected it some.