Cool video, I always enjoy learning how things work. Made a lot of progress today. We dropped the charge down to 26 oz, and things are WAAAY better. 90F, and even after extended idling, the high side was around 280-290 (still a bit higher than I'd like, but certainly better than 350-375). The HPCO n...

Thanks again for your input, as always. I haven't yet had a chance to take the truck to get evacuated to swap the o-tube, but today, we had a nice storm blow through, and the temp dropped to about 82F and 80% humidity. Not sure if this is relevant or helpful to determine charge, but I did a bit of a...

Looks like both of the fan/shroud assemblies are too wide for my radiator/core support. Bummer. I might look into a Mark VIII fan, I hear those move some massive air quantities. I think I'm also going to have the system recovered and swap to a white orifice tube. I'm hoping the larger orifice will h...

When you cool the condenser, the pressures drop. The parts you are missing: 1540107 Clutch 1580692 Fan 15164394 Lower Shroud 15088328 Upper Shroud The F body fan was marginal in the F body. There is a reason the Suburban uses that monster 9 blade fan. My engine actually came out of a 2005 Sierra De...

The condenser is an ACDelco non-GM part. Friday on my drive home from work (~15 minutes, 98F, full sun), it hit about 54F. Did a bit more testing saturday morning, 84F out. On initial startup, high side was 270, low side was 40. Hosed down the condenser and it dropped to 225 or so, and 35 low side. ...

I wasn't charged for any additional oil on the invoice, but there is always the possibility they did so. As far watering down the condenser, I set the spray nozzle to mist and just let the fan pull that in. It dropped it relatively quickly, but only to ~300. Should I full on hose it down and see wha...

Vehicle: 1988 Chevrolet 3/4 Crewcab (73-87 body style) Engine: 2005 GM 6.0L V8 Compressor: Denso 10S17F Orifice Tube: Ford Blue Condenser: ACDelco Parallel Flow (156960) Temperature: 93F w/ 60% humidity High side: 325-350 Low side: 45-50 Center vent temp, at idle, max air, doors open: 60F Center ven...