Thank you all for trying to help. Here's the run down. The 350 is a crate engine. The 400 is custom built at home. They both have new harmonic balancers that have been vedrified for TDC, new flexplates, and identical distributors from summit. The distributors springs have been changed to the black (heavy) ones. The readings are total advance (initial, vacuum, machanical). The vacuun is ported and pulls in approximately 22 degrees.