D'scamaro

i just put in my new 408 and when i drive it down the street at about 3500 rpm's i only have about 45 psi and after my motor warms up, it drops below 40 at 3500 rpm's... what can it be?? im ready to get it right, ive waited a long time to get this motor!!

Prerun4fun13

iTrader: (6)

Pull the front timing cover check the oil pump o ring. Also is your oil pump new and or a ported unit?

D'scamaro

it is a new ported ls6 oil pump... i was thinking about buying a used ported oil pump so i know that it works.. and what if i do check the o-ring and the oil press is still low? i already checked to see if the plug was in the back of the block and it was. where would i go next?

eamador11

yeah very common to pinch the oil ring when re-installing the pump. or its torn

D'scamaro

should i also go ahead and get a used oil pump that i know works or just get a new one?

sweet-94z28

iTrader: (30)

Get a new one!!!!

D'scamaro

what else can i check for while i have it torn down? anything else that could be cause that??

D'scamaro

any suggestions on where to get the oil pump from?

bjamick

iTrader: (31)

Texas speed is where I bought most of my stuff. They have quality parts and are usually cheaper also. But usually its the O ring that causes low oil pressure.