[chewychevy67]

So I did some playing around with the cowl intake system. Instead of using the speedometer switch at the cruise control unit for the overdrive I decided to use the switch at the transmission gear to operate that. I decided to use the switch under the hood to operate the door that let's in the air from the cowl.i was worried about having fuel smell in the cab when I run my ac so I made it so the door will let the cowl fresh air in at 30 mph and shut it at 25mph using a vacuum pod and a energized solenoid. The speed sensor grounds the solenoid at 30mph and opens it to let the vacuum to the pod to open the door. Door has a spring and stays closed all the time except over 30mph so fumes can't travel into the cowl area. Basically i turned the tcs system from 1972 into a way to operate the fresh air door. Cowl needs to be moving to operate properly anyway.