The earlier Chevelles are great cars, but have one major design flaw-an ugly firewall. Not only do they have a seam that runs right across the middle, there are so many tack welds the thing looks like it has a bad case of acne. Having this as a backdrop to a highly-detailed motor is just a distraction. If you just want to smooth out the spot welds and eliminate the seam, then a few skim coats of body filler and some block sanding will do the trick.
What if you want to eliminate the heater or A/C holes? Well, that used to consist of cutting a bunch of filler panels and welding them in before blocking it flat again. Luckily, there is a better way thanks to the Firewall Smoothie Panels from ABC Performance. Tony Grzelakowski from ABC is now offering a CNC laser-cut panel for '64-67 Chevelles and El Caminos that makes the task of "shaving" the firewall much easier. Tony said the Smoothie Panel allows you to create a glass-smooth firewall without custom fabrication skills. The panel is cut out of 18-gauge mild steel, which is thicker than factory metal, which minimizes the chance of warping. The panel is made to go over the top of the firewall and be welded in place. This story will cover how to install ABC's killer panel on a '66 Chevelle with some prep and welding tips as well.