[tortuga]

So my new heads (same mfg, just ported with better valves and professional assembly) have a 0.070" different installed spring height than my previous setup. How much will the pushord lengths change? Will they necessarily? I have 1.65 ratio rockers.

70 thou is like a fuzz over 1/16"...

I do plan on inking the valve stems and checking.

Thoughts?