Fact Or Fiction
wondering b/c my headers/ory will be on next tuesday.
Thanx

you "heat treat" new valve springs by warming them up to normal operating temps(idle for ~ 20mins), then let them cool completely(6-12 hours, basically overnight), then you warm them back up to operating temps again, and you can romp on them.
with headers, all you gotta do is install them. and as you do with pretty much anything you install on your car, after a few miles of driving, re-check the torque on the bolts. other then that, you're good to go.


