I think the standard recommended by Moroso, SAE and the aircraft industry is to set the input pressure to 80 lbs and then do the math off of the pressure drop to each cylinder, IE 80/78=2.5% shruggy
Don't forget to make sure the gauge you buy and use has the metered orifice to keep it accurate scope

Last edited by Cab_Burge; 10/15/16 03:39 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)