DrHolliday
Junior Member
- Joined
- Dec 24, 2015
- Posts
- 10
- Reaction score
- 0
- Location
- Sandy, OR
- First Name
- Chris
- Truck Year
- 1983
- Truck Model
- K10 Short wide
- Engine Size
- 454
Last weekend I replaced my head gaskets on a 454 BBC. Got it all buttoned up and everything worked great. I took it for a test drive and come back to find I am leaking oil out of the front of my oil pan. I did drop the pan when I had the heads off because I dropped a bolt in the motor. I did get the bolt out when I dropped the pan.
So I know my pan gasket did not seal. I'm changing it Saturday and using a felpro one piece gasket. But I've noticed a strange issue. I have 0 oil pressure on a cold start for about 30 seconds to 1 minute. Then oil pressure builds to about 65 psi. I know it's oil pressure and not the mechanical gauge because I have lifter noise until the pressure starts to build. I've also noticed on the highway oil pressure drops with RPM's. at 2500 on the tach pressure drops to about 35-40 psi and engine rpms fall it climbs back up to 65 psi.
I'm thinking the pick up tube is to blame. It might have come loose when I had the pan dropped? Just looking for ideas on what it might be. I do have a new oil pump to put in when I have the pan dropped too.
I'm running rotella 15w40 with 1 qt of lucas stabilizer.
So I know my pan gasket did not seal. I'm changing it Saturday and using a felpro one piece gasket. But I've noticed a strange issue. I have 0 oil pressure on a cold start for about 30 seconds to 1 minute. Then oil pressure builds to about 65 psi. I know it's oil pressure and not the mechanical gauge because I have lifter noise until the pressure starts to build. I've also noticed on the highway oil pressure drops with RPM's. at 2500 on the tach pressure drops to about 35-40 psi and engine rpms fall it climbs back up to 65 psi.
I'm thinking the pick up tube is to blame. It might have come loose when I had the pan dropped? Just looking for ideas on what it might be. I do have a new oil pump to put in when I have the pan dropped too.
I'm running rotella 15w40 with 1 qt of lucas stabilizer.