383 Z

ive got about 1000 miles on my stroker motor, and i was running non synthetic 20w-50 for break in, and i think from the back pressure and the infamous intake manifold leak it kept blowing out the rear seal on the manifold so im using 5w-30 and not having any oil leak problems now.

anyway, now that i switched my oil, when hot my oil psi eventually drops to 0 psi ( where as on 20w-50 it would get down to around 10) and makes my check gauge light come on. when i start my car is have 70-75psi oil pressure and it slowly drops when it warms up at idle. still very high psi anything above idle when the engine is warm but i just wanted some opinions about if i should worry that my gauge is reading 0psi. it kills me looking at it, i hate getting stuck at a stoplight.. and it makes it difficult to hear if there is anything damaging going on because of my cam and exhaust setup, but personally i dont think its hurting anything

on a side note i have heard the factory setup isnt very accurate. and im not using the factory pigtail i have a brass female 90 that threads onto the stem sticking out of the back of the block on one side and the sensor threads onto the other side. thoughts?

RamAir95TA

iTrader: (2)

Are you using the OEM gauge on the dashboard? I would pick up a mechanical gauge and verify the readings you're getting on the dash using the auxiliary oil port above the oil filter.

383 Z

yea still going off the dashboard

JB_97ws6TA

iTrader: (6)

^^^what he said...verify your problem before hunting for a solution. I pulled my hair out for 2 days trying to figure out why my fans weren't coming on at 220+ degrees, come to find out it was my temp sending unit in the head that went bad and the cooling system was fine...oops

the_merv

iTrader: (88)

No wonder you are having problems with blowing the Seals out..did you build a Diesel..lol?

IMO that's some pretty damn thick Oil..expecially to use when the tolerances in the Engine are at their tightest.

ProMod80

i would think the oil sending unit is bad...+2 on the mech. gauge!

94LTZ

iTrader: (5)

Why did you use 20w-50????

I would pull the sending unit and use a mech. guage like stated...

DAVE00

iTrader: (10)

There is nothing wrong with using 20W-50 as this is exactly what I used on my motor for years (suggested by my builder) and I now use Synth 15Wx50. The only thing I can think would be a problem is the colder climate in NC as that 20W-50 during the winter would be think as hell. Not a problem for me down here in Houston.

383 Z

i was having electrical issues and my fans wern't coming on at all, and the 20w-50 seem to help everything run a little cooler. And i have 12.6:1 compression, it just seemed to like it better than the 5w-30. A local guy in my area that runs high 9s in his 383lt1 also reccommended it to me so i listened to him haha


thanks for info guys im gonna get a mechanical gauge soon

the_merv

iTrader: (88)

Whatever works I guess..I figured it would be too thick..

Fatbum

iTrader: (1)

It would be in a climate that gets too cold no?

kinglt-1

iTrader: (26)

I agree there is nothing wrong with 20w50. Ask Larry at speed inc. thats what he recomends for all stroker ltx builds... Op put a mechanical guage on it, pretty common for the dash guage to not read right.

bufmatmuslepants

iTrader: (3)

Sending unit probably bad, dont get a replacement from advance or vatozone, they are junk.