The original factory setup called for 3 3/4 lbs of R12 and 10 oz of oil... Because I changed the compressor and dropped the muffler assembly I'm guessing the numbers are going to change. I'm thinking about 48 oz of R134A max and 8 oz of pag150.. Thoughts ?

Hadnt heard of the V5... It certainly wasn't an option when I ordered my Holley accessory drive kit I don't think ... The engine is a LS327.. I needed as much room as I could get which is why I went with the R4.. My unit has a new expansion valve as well... Will have to try it out at this point seei...

Newbie here... I have a 65 Olds Cutlass with factory air that I am getting up and running again... I pulled this setup off another car 30 years ago and at the time, my bad, when I started taking it off there was the slightest bit of pressure in the system even though it sat for many years.. Anyway.....