I primed my 572 C.I. iron Hemi World block yesterday for the first time, it has 75+ lbs. on my old 1/2 Craftsman drill motor using Valvoline VR1 10x30 wt. oil boogie This block(World cast grey iron with the 4.490 rough bore size has the stock .039 restrictors in it to the Stage V non roller rocker arms to oil them full time and they are oiling okay also up Crane solid full body tall solid roller lifters on one of Tim Banning FHO custom ground Comp Cams solid roller lifter camshafts for EFI, I'm hoping for 800+ HP on this motor with dual 1150 CFM throttle bodies on Oregon 92 octane non ethanol pump swill luck
How hot was the oil and what RPM did you have 10 lbs. pressure at ?
My old 518 C.I. pump gas wedge motor would have under 20 lbs. at 170 F idling at 850 RPM shruggy That was with 5W20WT oil, never had any oiling issues racing that motor shifting at 7000 + RPM up
My oil temps. in the summer would get up to 200 F with coolant temps of 220 F shruggy
My message is if you have 10 lbs. pressure for each 1000 RPM your good, IE 10 Lbs. at 1000 RPM idling with hot oil and 20 Lbs. at 2000 RPM and so on twocents
I cut the bypass spring on my oil pump to lower the pressure and ended up having only 65 Lbs. at or above 4500 RPM with 150 +F oil temps. I could have shim the bypass spring or replaced it with one a half a coil longer but I didn't really see the need for it twocents work

Last edited by Cab_Burge; 03/23/18 03:55 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)