ok just got my brand new gm 4 bolt main shortblock running, i put the gm white spring in the melling 10554. this seemed to be the highly popular reccomendation. anyways sometimes my idle pressure stays right at 20 psi, sometimes its at 25 and other times it is at 30. now those numbers are on a warm engine, with a pf454 ac filter, and 5w 30 castrol conventional. i figured that this is about right because crusing at a 2000rpm its around 40-50. and at wot its 50-60. i have a cc503 and the idle is set at 750/800. thanks for any input. im sure its fine, but i want to make sure since i did spin a rod bearing after the first cam install . reassure me guys!

 

20-25-30 is great idle pressure. Other pressures are fine, too.

 

thanks shoe box. i was hoping to hear from you on this one. btw your site was AMAZINGLY helpful through my rebuilding process. i plan on donating when i have some cash free up after this build.