Stu,

Glad you had a good time at the run. Thats what this is all about!

As a follow up on this post, I wanted to stress again that my friend says forget conventional wisdom about stock A/C systems due to the fact these aftermarket systems work differently. This really hit home when he told me the low side should be between 6-12 psi. I immediately responded "that sounds too low to cool at the temp I want". He then reminded me to forget stock systems which have larger capacity systems.

Here is a link to the Trouble Shooting guide found on Vintage Air's website which describes the expected low and high pressures. I would suspect Southern Air and Vintage Air's systems to be similar in how they operate with respect to pressure, so it should work for you as well...

http://www.vintageair.com/DownloadsS...ng%20Guide.pdf

Again, I am no expert, but so far my research points to too much freon is not a good thing on these street rod systems.