Hello all. I am looking to do a vintage air system in my 85 crew to avoid the unavoidable problem of the crappy and brittle hvac control lines. My donor is a 93 Cummins d250. From what I can tell, it should be a sanden 709.

My question is concerning the fitting sizes in the compressor itself. I have read another thread on here by Thrashing cows where he retrofitted an i/c compressor into a non ic setup. It was mentioned the hoses that were used were #8 o ring and #10 o ring.

Can someone verify this? If it is so, this will help me along greatly since all of the vintage air stuff uses the #8 and #10 o ring connectors, and they don't have any compressors with a cummins bolt pattern available, and their only rear output compressor is a 7 groove belt. Imagine that... Thanks everyone!

 

Yes, -8 and -10 fittings. And the compressor is the Sanden model SD709.

 

Awesome! I know you were the other poster on that thread. That saves me from buying a compressor and fabricating brackets as well as the worry of adapting something to work. Plus, the compressor on the donor is still operating. Just not blowing cold. I'll upgrade the other components to the vintage air stuff, but run my existing (and bolt on) compressor. Thanks!

 

What components for vintage sir have for or trucks? Not exactly a lot to retrofit. Especially if you're saying they don't even have the right compressor for it.

 

Nothing is bolt in, but then again, most of us are used to minor fab work.

Here is what I plan on running for the box (after I patch the honkin' hvac hole in the firewall): http://www.vintageair.com/2014catalo...08-15%2046.pdf
It is $490. They have a compact version that would work great for reg and ext cabs, I believe. It is $470.

The condenser I plan on using is the monster superflow. Pretty close to the original condensor size on the donor: http://www.vintageair.com/2014catalo...08-15%2084.pdf

They have base controls at the top of the page starting at $49. I plan on using the 4 **** aluminum at the bottom ($159) for maximum gauge space in the dash:http://www.vintageair.com/2014catalo...08-15%2048.pdf

Then you have to do the dryer and lines (probably will do the braided stainless on mine). The best part is, no vacuum lines to worry about. All of their stuff is servo motors. Much like new cars today. Yeah, it'll cost about $900-1000 for it, but if I figure the price of replacing everything and doing stock again, I'd spend about $600-700 and still have the brittle vacuum lines to worry about.