If you have a good set of 315's, let me know. They are, at least on a 273 in NHRA legal configuration, the equal of, if not superior to any other legal number including the vaunted 302's (which we are currently working with)

All I submit is this - the dyno is the dyno and the ET slip is the ET slip. 315's are a great choice for the 273. The odd angle of the bolts does cause a bit of a problem, but it is only a matter of some end mill modification to fix a later intake to bolt down properly.

Not trying to start a war or be ugly, but we don't get behind the wheel of a flow bench, it is only one tool and doesn't tell the whole story.

Peace, Rev. Mopar (Class of 65, 32 time IHRA and NHRA national record holder)