Oil Pressure ?'s

[WhiteDevil]

Well the 347 has 2,000 miles on it now and i just had a quick question about oil pressures. On cold start up i get about 52-53psi and it stays there at idle or driving. Once the car has been warmed up for a while it will be at 50psi steady while cruising. Once hot at idle it drops to around 27psi. Right when i hit the gas it goes back to 50psi. I just wanted to make sure this is normal

 

[WhiteDevil]

anyone?

 

[urban96]

seems normal IMO

 

[Killercanary]

Seems OK to me. Its just your oil thinning out when warm, and the pressure comes back with RPm as the pump spins faster.

My old stock 302 would drop to 10psi or lower at idle right before I hurt it. It was nice and loose!

 

[SeventyMach1]

My old stock 302 would drop to 10psi or lower at idle right before I hurt it. It was nice and loose!

I would crap myself if that happened to me.





JP, my pressure is about the same as yours. They're supposed to fluctuate like that. But mine only drops about 5 psi at idle. I'm not saying you have bad pressure, though .... I have no idea. What pump did you put in there?

 

[final5-0]

Sounds OK to me John

Grady

 

[4Jenna]

HV pump?
If so thats much lower than mine (HV Melling)

 

[blksn955.o]

Mine is EXACTLY like that with the std. volume pump on my DSS pro bullit 306. I have somewere around 3-5k miles on it (speedo/odo way off)

 

[WhiteDevil]

Mine is a blueprinted melling stock volume pump. About 2,000 miles on the stroker now. Dyno next saturday! Thanks guys

 

[BlownFiveLiter]

That doesn't sound bad to me personally. What weight of oil are you running through it?

 

[WhiteDevil]

10W40 Castrol right now for another 1,000 miles. Then it will be 15W50 Mobil 1 Full Synthetic.

 

[OrangeMustangGt]

yup, i just put a cheepo mechanical oil pressure gauge on my bronco. It does the same thing. 50 cold, 25 warm cruising, and 10 at idle warm

 

[Grn92LX]

10W40 Castrol right now for another 1,000 miles. Then it will be 15W50 Mobil 1 Full Synthetic.

Why are you waiting so long for synthetic?

Post up the dyno #'s after you go. Good luck.

 

[DDSTANG94]

THIS IS NOT NORMAL. IT SOUNDS LIKE YOUR BEARINGS ARE ALREADY WORN OUT.

 

[SQUEEZE&STROKE]

THIS IS NOT NORMAL. IT SOUNDS LIKE YOUR BEARINGS ARE ALREADY WORN OUT.

That is PLENTY of oil pressure...right around what my 331 runs at. Dont be scared, the std volume pumps have been recommended by everyone I have talked to...you dont need the HV pump it robs power.