Layumon22s
+1y
Edited: 2/9/2010 9:43:38 PM by Layumon22s
It depends a lot on your pressure switch and what pressure you drive your truck at. 3 gallons at 200 psi should be enough. I have 2 480s on 2 3 gallon tanks with a 145/115 switch and it does just fine. Maybe consider doing that, your comps will last longer and run a lot less plus its really easy to do