In this, episode 64 part 1, DV and assistant Phil Stillwell show how to modify a set of original factory iron 289 heads to bring them up to vintage race spec. Though intended for vintage class racing they make pretty awsome street heads. How good are they? Well let's put it this way - they will outpower any 'off the shelf' aluminum heads by a healthy margin (CNC ported or not) and you could be doing these in your home shop. All the details needed will be presented in this and the subsequent part 2.