I do automotive a/c full time up here in Canada and the pressures I typically see on production vehicles differ slightly from Vintage Air systems that I service a few dozen times a summer.5 psi is within VA specs for the low side and 225 on the high side makes me suspect your not getting rid of the heat in the condenser since the vent temp isn’t below 46 degrees. Try spraying some water on the condenser with the system on and if your vent temp drops like a rock in a few moments then you have verified your system can produce cold air. The fix could be as easy as a 2 speed fan that may pull more air then your current one or it might mean your condenser is under sized even though it was a kit made for your application.We have have lines run beside the exhaust manifolds and condensers mounted too far in front of the radiator with no seal so the fan just pulls air around the condenser instead of through it.Lots little things to look at ,but enough them and you have a problem. Just my two cents and I’m aware that there’s some really smart A/C guys on this site.Hopefully these few suggestions help
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