pushrod length?

Things we need.

What engine?
What machine work?
Heads milled?
Block decked?
Adjustable or non adjustable rockers?
What kind of rockers? Stock? Aftermarket?
Solid or hydraulic lifters?

You might as well have asked us what you look like because there is just as much chance of us knowing that as knowing the answer to your question.

It's along the lines of "I need help. My car is red."