Thoughts on AC performance

[David]

I've heard reports that some (many?) 4000/CGT owners have A/C systems that get cold nearly instantly, whereas mine (and several others I know) take a while to get cold, even more so in bright, sunny hot humid weather. So, I'm trying to figure out the correlation. I've tried everyting I can think of. My system is in perfect working order. My system does get nice and cold, Vent temps of 38*F are attained, but it takes a while. I've even added a pusher fan in front of the condensor wired to the compressor clutch wire so it comes on every time the compressor kicks in. One thing that makes me curious is that if the car comes to a stop and idles, the vent temps climb. At a typical red light they can climb as much as 5*F. Anyway, more to the point... I'm missing  the lower and engine side radiator ducting (have upper & fender side). So, what i want to find out, is whether those who report fast cooling have their ducting. Or if the ducting really makes that much of a difference... Thoughts?

Dave
1987 CGT Special Build 2.3
SE Virginia