Ah ok gotcha. The 7.1 oz spec is for a 2006 Silverado which was the donor vehicle for the compressor. Thanks

The only part of the system that is original is the evaporator. Everything else is modern and new

I have a 1965 Chevy Nova and am putting together an AC system for it. I am using a factory under dash evaporator that I have cleaned up and changed the TXV to work with r134a. I also had it retrofitted with o-ring fittings. The engine is a 2006 5.3 Ls engine with a brand new Denso 10S20 compressor. ...