[viking427]

Yes it will work. As such it will pull fresh air in from both valve covers, down and across the forward portion of the lifter valley - thereby capturing and evacuating blowby gasses from all three regions.

Anyone wanting to run old school "Chevrolet" or "Corvette" ..or aftermarket for that matter, aluminum valve covers without holes will need to rig it like TBone says - just make sure you have a vented cap on your oil fill tube at the front and use a PCV valve on the rear hose (watch the arrows). Your 63/64 PCV design has the engine burning "blowby (uncombusted fuel/oil vapors) that build up in the lifter valley by pulling fresh air in from the vented front oil fill cap, via vacuum, rearward across the lifter valley, and up through the rear vent/PCV valve into the carb base/intake, where it mixes with fresh fuel/air mixture entering cylinders for combustion. Chevy's next PCV design (65/66/67'ish) reversed this by pulling the fresh air in from the rear & forward toward the front, up and out the fill tube via a hose/PCV to the carb base. The 68+ design improved one step further by now pulling fresh air "sideways" across the engine to also evacuate (capture blowby gasses) both valve covers AND the valley - which is when we begin seeing vent caps and PCV's/carb hoses on the valve covers.