Air Ride Technologies kits a few ??'s

[Bagd72Chevy]

How high from the ground does the truck's rockers sit when the bags are fully deflated on a 67-72 chevy truck with the A.R.T. kit, and no other mods to the suspension. Also how high does the front crossmember sit? and what size wheels do you have? I'm planning on running an A.R.T kit with 1/2 lines, Big Red valves, 20's up front, and 22's out back. I'm contemplating wether I should do a front crossmember drop, c-notch the rear, and possibly raise the bed floor.

Any help is appreciated
Thanx,
Ryan

[Slammed67]

I'm not sure about the ART kits but in my opinion 1/2" line would be overkill. I have 3/8" line/valves and with 140psi in the tanks, I can raise the truck to ride height in about a second. Actually, the rear raises too fast and is hard to get it set to the correct pressure. If you want to make it hop, then that’s a whole different story.

I'm contemplating weather I should do a front cross member drop, c-notch the rear, and possibly raise the bed floor.

How low do you want to go? I think a lot of guys only focus on getting the truck as low as possible without worrying about that minor issue of functionality. If you want it sitting in the weeds with 20's and 22's, I foresee a c-notch, raised bed floor (the right way to do it), and a notched front cross member in your future. Decide how low you want to go and what you want your ride height to be, then plan your strategy from there. The lower you go, the more mods that will be necessary. Feel free to check out my web site to see what was involved with mine. Also, there is a lot of info in this “suspension” forum.

[98L150]

Here is a pic of my 72 sub with ART kit. I have a set of drop spindles inthe front and a c-notch only in the rear. Rims and tires are 20x8.5 with 255/35 - 20. Not sure how close the rockers are to pavement, but itt gives a viual.

[milner]

98L150,that is one sweeeeet burb.

[Bagd72Chevy]

I'm not positive but I think the big red valves are 3/8 inch. I just want 1/2 line, because you generally want the vavl;es to be the most restricted piece in the system. I'm not quite sure why, but thats what the guys around here told me.

[FuelCellGuy]

crossmember height with 2 1/2" spindles, bags, 255/50ZR17 tires.

[Izzy]

Originally posted by 98L150
Here is a pic of my 72 sub with ART kit. I have a set of drop spindles inthe front and a c-notch only in the rear. Rims and tires are 20x8.5 with 255/35 - 20. Not sure how close the rockers are to pavement, but itt gives a viual.

Badass for sure.

[Slammed67]

I'm not positive but I think the big red valves are 3/8 inch. I just want 1/2 line, because you generally want the vavles to be the most restricted piece in the system. I'm not quite sure why, but thats what the guys around here told me.

I'd have to disagree with the person who told you that. Using 1/2" line downstream of the valves won't make it any faster that 3/8" line. You could use 2" line (for example) and it wouldn't be any faster because you still have a 3/8" valve. Are the bags 1/2" port or 3/8" port? Running 1/2" line between a 3/8" valve and a 3/8" port bag would make absolutely no sense.

[Izzy]

Originally posted by Slammed67


I'd have to disagree with the person who told you that. Using 1/2" line downstream of the valves won't make it any faster that 3/8" line. You could use 2" line (for example) and it wouldn't be any faster because you still have a 3/8" valve. Are the bags 1/2" port or 3/8" port? Running 1/2" line between a 3/8" valve and a 3/8" port bag would make absolutely no sense.

Actually it will because the I.D. of the 1/2" line is 3/8" and that would be a truly 3/8" system unless you're talking I.D. then you're correct.

[Slammed67]

True...... I stand corrected. I was thinking pipe (I.D.), not air line (O.D.) I work with HVAC engineers

But either way, the flow rate would depend on the size of the smallest orifice in the system. But I doubt there'd be a noticeable difference between the 3/8" and 1/2" line.

I just want 1/2 line, because you generally want the vavles to be the most restricted piece in the system.

That quote just didn't make much sense to me.

[Izzy]

Originally posted by Slammed67
True...... I stand corrected. I was thinking pipe (I.D.), not air line (O.D.) I work with HVAC engineers

But either way, the flow rate would depend on the size of the smallest orifice in the system. But I doubt there'd be a noticeable difference between the 3/8" and 1/2" line.



That quote just didn't make much sense to me.

LOL I can see the confusion.

It's not that big a difference but I like to keep all the I.D.'s the same just for personal preference.

I wouldn't run anything bigger than a 1/2" O.D. because it's very hard to bend the line into tighter areas.