Quote:

Interesting math, but how does this translate to heads, rocker arms, pushrods and valves?
Let's say that you have trial assembled your combo and done the math provided.

How do you measure scrub?
How do you correct it?
You can lengthen the valve end with lash caps (requiring shorter pushrods)
What else?
Machine to move the rocker shaft closer/further from the valve?
Try various rockers?
Machine the rocker arm pads?



I didnt do the math to find out the sweep/scrub but
with checking and some math I ended up cutting .160
off the pads on my W-5s to run the TD multi shafts
to get the minimum sweep which is about .020 now