Thoughts on the 670 holley

I figured by the title of this thread that it was you SSssssnake....


If it is a vacuum secondary, I would recommend buying the secondary spring kit and install the lighter yellow spring for the vacuum secondaries. This will let it open sooner and be fully open by 6000 RPM. The lighter yellow spring is the shorter one. There are two yellow springs in the kit, and the longer one is just one step behind the short yellow one.