mred

iTrader: (5)

Installing a vintage air system on a 58 apache with an 20004 5.3 and I am running the factory ac compressor in the stock location.
But yet Vintage Air says I need a constant pressure compressor my 2004 ac compressor will not work....
Anyone had this problem?

garys 68

iTrader: (1)

If you do a search here on compressors you'll find others have used the stock compressors with mixed results. The operating pressures differ between the VA sanden and stock compressors so efficiency is decreased.
I went with the Sanden, it gets hot here in MO.

Jim Maras

I used the stock compressor on mine with Vintage Air. Just make sure the compressor is one used for non climate control. The climate control one's are variable displacement while the non are fixed displacement.

mred

iTrader: (5)

Thanks

1936 LS1

iTrader: (10)

I realize this is an older thread but is this info correct? If so, how would you determine a variable displacement compressor from a "regular" one?

DirtyDirk

There is an old post on making your variable comprosser a fixed. They had good results. I was going to do the same with mine but I'm years away from that point.

1936 LS1

iTrader: (10)

It appears that I may have posted too soon. After doing some more reasearch, it appears that the pre-2003 Denso compressors that came stock on trucks are fixed displacement and work just fine with Vintage Air systems.