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Oil Pressure

80' 427

80' 427

1/2 ton status
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Nov 14, 2006
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Well my 454 is a little low oil pressure. I still need to verify with a mech gauge but with a new sender it reads 0. It has a L88 pump and used to have great pressure but I had a turbo and it had a high egt a few times so I went back to N/a. It really isn't anything great and I don't care if it dies but I want it to live through next weekend. I could pull the pan but what would I change besides look at the pump and the pickup tube? If the bearings are toast I will just put in the vortec 454 short block. I am far from a engine noob but really what am I going to fix without tear the whole apart? I am thinking about just adding 50wt and running it till it dies. Honestly it still runs great but was a 80k marshall engine rebuild that I swapped cam and intake onto and ran so it is far from anything special and will pry get sold as a core for an irrigation motor when done.
 
80' 427 said:
Well my 454 is a little low oil pressure. I still need to verify with a mech gauge but with a new sender it reads 0. It has a L88 pump and used to have great pressure but I had a turbo and it had a high egt a few times so I went back to N/a. It really isn't anything great and I don't care if it dies but I want it to live through next weekend. I could pull the pan but what would I change besides look at the pump and the pickup tube? If the bearings are toast I will just put in the vortec 454 short block. I am far from a engine noob but really what am I going to fix without tear the whole apart? I am thinking about just adding 50wt and running it till it dies. Honestly it still runs great but was a 80k marshall engine rebuild that I swapped cam and intake onto and ran so it is far from anything special and will pry get sold as a core for an irrigation motor when done.
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I would check with a different gauge like you said. Is it above 0 if you rev it up? Pull the valve covers and see if there is oil flowing out the pushrods? You could try pulling the dizzy and spinning it with a drill. I doubt one of the plugs behind the timing chain or anything would just suddenly fall out after all these years. Good luck. You could check the pressure spring in the pump I suppose but I would probably do that last, pulling the pan in the vehicle with a BB isn't fun.
 
So I went home and checked the pressure and it is about 5 psi higher. I changed the oil and it did have some metallic in it. Pulled a valve cover and didn't find much of anything metal wise. Changed the oil to 50wt and it did make a difference. I am going to get parts for the other 454 so I can just pull this one when it dies. I think I bought a few more trips to the trail. I always take a trailer so no big deal.
 
Guess you'll have to ride with me after you break (again.........).

Martin
 
I think it will be fine for at least the weekend. It has plenty of pressure now. Going to add a electric fan too help keep it cool so the pressure stays up.
 
Fill her up with Lucas oil treatment!! That stuffs thick as a mother, and actually kept the psi up in my 305 when the bottom end started nocking and the psi went to crap.
 
If it makes you feel any better, I would imagine the Blazer's engine is on borrowed time as well. Get me that TPI ECM and harness yet???

Martin
 
No ecm, you can ask him wtf next week when we are drinking.
 
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