Joshua Keith
Full Access Member
- Joined
- Aug 28, 2019
- Posts
- 380
- Reaction score
- 552
- Location
- Memphis
- First Name
- Joshua
- Truck Year
- 1985
- Truck Model
- K10
- Engine Size
- 350
I don't have a picture, but the flapper is just a piece of plastic. Not really designed to fit flush with the inner firewall. the flapper is inside the cowl near the yellow arrow. To seal it off you would only be pulling air from inside the cab. You would have to find a way to permanently hold open the door on the right kick panel.
I only took a short 15-20 minute trip. Last week when I drove the truck for about 40 minutes straight, it did a much better job maintaining the cooler temps.
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I guess one could unhook the kick panel door, but idk if you want that open all the time with it being so close to the rain drain route. Sound like too much work for a 2 degree change if that. I’m happy with my 60 degrees at idle on a 100 degree day.