2 Compressors?

Does anyone know what I need and how to hook up two compressors? Reason I am asking is because I have (I think 25 gallon and 20 or 15 gallon) compressors in my garage and I wan't to paint my truck with them and hook them up to help a bit more. I know you should use at least a 60 or 80 but I talked to Spraytech about it and he said he has used a small compressor many times and all I need to do is just wait till it fills up, etc.
I have neither a 80 gallon compressor or a 220v hook up so this is the reason why I am wanting to hook both up.
Any info on this is greatly appreciated, thanks a lot!

Shawn-

I agree with Spraytech, you'll be fine with just the one compressor. Keep in mind your only doing one coat at a time. In between you'll be letting the compressor fill and refilling your gun.

If you want, you can hook them up in parallel. Put a tee on the inlet to your filter/dryer and feed both of them in on the upstream side. Necessary or not, it will give you more capacity (CFM).

Thanks guys. Henry that is what I would like to do... So just put a T on the inlet to the filter or dryer and that's it? I would like more CFM and it won't help much since the other one is tiny for things like nail guns on roofs but any little bit helps. Now the hard part is making my spray booth and all. I am thinking that it may not be worth doing this myself and painting my truck at home. I may wait until fall and when I am going to college taking auto body and just doing it there but then again I have rust comming under the old paint and it's bubbling bad and rust dripping and I don't like that. The paint on it now is like a few years old (maybe 5 or 6 I think) and it's really good shape but there are about 10 spots with bubbles, some scratches, etc.
Thanks again and anymore info or help is greatly appreciated!

Make sure that both tanks are rated for the same pressure. You don't want one compressor overpressurizing the other tank and blowing things up.

Good point. I am not sure how I will find that out... There is no sticker on the smaller one I don't think or nothing like that.... :?

GMC is right on.. Over pressuring tanks is mucho quick trip to the morge.

My impression is that fed law requires ALL pressure vessels be labelled with a durable label. That means a rivetted plate or stamped letters in the tank. SO. The rating may be stamped into the tanks somewhere and painted, so look closely.

If you can't figure out the little tank's pressure rating skip it.

You may also have a bit of a circuit problem running them both in the same area.

Alright well thanks for the info then. I am going to use just the bigger compressor then. It looks like that would be my best bet for now.