ET Report Card on the Speedmaster Heads

When I was in my 20’s I didn’t mind the 4.10’s I had in my heap at all.

35 years later......3.23’s sound much more appealing.
100% agree. I ran 4.30's, but that slowly worked on me, even in my 20's. I think now with all the cars going down the road at 1400 rpm's, it even makes it seem more intolerable.