I'm trying to get a better general understanding before digging around in there.

What is stock cam lobe lift? .258"

With a rocker lift ratio of 1.6.

When shopping for heads, I see ads w/, machined to .600" clearance. For stock L67, what is clearance?


Also, shopping for yt 1.9 alum rr, the only place I found is intense, and they recommend 90# springs. I've read in many other places 105# are better. Anyone want to chime in?