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BigdaddyDupree · 08-17-2012, 10:02 AM

12 PSI seems real low honestly. my junkyard 5.3 has never been lower then 35 at hot idle. Melling is a good pump but i can get you a GM pump probably pretty reasonable. maybe try a mechanical gauge

08-17-2012, 10:02 AM	#2
BigdaddyDupree Senior Member Join Date: Jul 2008 Location: MACEDONIA Posts: 4,967	12 PSI seems real low honestly. my junkyard 5.3 has never been lower then 35 at hot idle. Melling is a good pump but i can get you a GM pump probably pretty reasonable. maybe try a mechanical gauge __________________ . What you wanna do?