Speedmaster heads are on and running.....

My seat-of-the-pants dyno says "Hands down, No doubt faster". I also have markings out of town and I gained MPH in that same stretch compared to before. I would guess 4 tenths, but that's just my guess. That would be a 12.9

Lookin forward to the track results!!

I like that you didn’t change anything else on the combo.

I think the 13.3’s out of it with the stock heads, tiny cam, and 2.94’s was fantastic.
Anything beyond that is just a bonus........ and if it actually dips into the 12’s...... that’ll really be something.