What is the smallest air tank I can get away with?
 

I don't plan on hopping or anything with my truck, but would like air it down when parked, then lift it to ride height when I want to go somewhere. I already bought Slam Specialties bags that have 1/2 ports, but I think I am only going to run 3/8 lines and valves to save a bit of cash. I was hoping to hide the tank under the truck somewhere, and I will be mounting the fuel tank under the bed.

What is recommended?

6 gallons of Air, to go from 3/8 to 1/2 inch is not much more. maybe a few bucks.

3 gallons works fine, but you'll cycle the compressor EVERY time you raise it. You've got room under your truck for plenty of air... I'd recommend 5-6 gallons as well, that way you don't tax the compressors (because you ARE gonna play with the bags every once in a while).

I would imagine it would be pretty easy to fit a couple of 5 gallon "slim" tank under there...

[IMG]http://www.*****************/products/slimtank.jpg[/IMG]

5 Gallon Slim Tank

Or I know the S-10 guys can fit an 8 gallon between the framerails where the spare tire used to be...

8 Gallon Tank

Keep in mind that I am putting a fuel tank under the rear of the bed, so will there still be lots of room?

Its hard for me to picture right now, as I have the entire truck ripped apart. Maybe once I get the frame together and the cab back on I may have a better idea, but until then I am relying on you guys. :)

More than likely, your fuel tank will be @ the very rear of the truck so a couple of small tanks on each side @ the front of the bed will work fine. 2 x 3gal tanks will work but there's room for larger if you want.

I use 1 x 3gal tank for the rear bags on my beater68. The only time I mess w/the system is when I'm getting ready to tow something.

For trucks with trailing arm rear, there is LOTS of room on either side of the driveshaft. I've got a 3 gallon tank, valves, and compressor on either side of the driveshaft, and at full drop they are well above the trailing arms. There's easily room for 5 gallon tanks per side.

.....unless your exhaust pipes run through this area. If you have a longbed, you should have plenty of room in front of the rear wheels, under the bed.

http://www.jayspot.com/images/truck/exh2.jpg

I too will be running my exhaust throught the crossmember. And the truck is a shortbed. Hmmmmm, this could be a tight fit.