oem valve-train limit
 

Referencing in terms of power/ torque numbers what can the stock valve springs handle. My bottom end will be forged. Will not be increasing the Revs. Reason asking because more than likely I'll be boosting the car.

Look into the FI Finished Builds to give you an idea.

Re-worded it. I'm retarded

Stock valve springs will be OK unless you are increasing rev-limit or valve lift.

If you are fitting JWT cams then be guided by Clark or Ben.

OEM cam lift = OEM valve springs