Will both approaches below work with the single stage 60gal tank, 3.7hp compressor motor, providing 13.4 cfm? Is a 2-stage compressor needed? Will work one piece at a time (strip, block, epoxy, body work) off the car (except rear qtrs, rear and trunk jams) then high build primer. Because of Houston humidity, don't want to strip and block sand the entire body before the epoxy Two approaches to spray the primer 1. Spray with the motor plugged in and let the motor cycle. Type_1976LT said the heated air would not be a problem with the proper set up. His recommendation was a 3/8" hose 50 feet long, a water filter and possibly a desiccant filter 2. Unplug the compressor motor after the tank is fully pressurized (155psi) and spray with only the cfm in the tank. Reason for this approach is to avoid heated air There is 7 minutes of spray time using the large tip gun from Type_1976LT which uses 7cfm at 40psi. To remain above min cfm available for the gun, use 49 of the 56cfm. The Binks website states one cubic foot of air is reduced in volume 1/11 when pressurized at 150psi. A 60gal tank holds 88cubic feet at 150psi and 32 cubic feet at 40psi giving 56cfm for use. The actual results will probably be different but the calculations should be close enough to show the spraying can be done this way.