Oil Pressure Problem....

Stock1528 · 06-27-2007, 08:53 PM

I have a 1972 Chevelle I/SA w. a 350. Around the pits, in the burnout, oil pressure is steady and fine. Going down the track, drops to about 20-25 lbs. Lift at the stripe and jumps back up to 60 lbs. Have had engine out, checked bearings, did a leak down, put on dyno, everythin checked out. Anyone have any idea what would cause this?

Justin Picillo
I/SA 1528

BillK · 06-27-2007, 09:20 PM

Justin,
I sounds like an oil pan / pickup problem. Maybe combination of both. How far off the bottom of the pan is the pickup ? Baffles in the pan ? Maybe some more details on the oiling system such as pump, pan etc.

Bub Whitaker · 06-27-2007, 09:27 PM

Justin... Call me... 301 490 3131

Alan Roehrich · 06-27-2007, 10:01 PM

Do you have screens in the oil drain backs?

Do you have a high volume oil pump?

How much oil do you have in the pan?

Have you tried running it with an extra quart in it?

Stick Racing · 06-27-2007, 10:36 PM

Possibility you have too much oil in the pan.

Call Bub, he has alot experience in this department. Trust me...

Andy Stone B/S 1102

Tyler Wolcott · 06-27-2007, 10:44 PM

I second that, if you have too much oil in the pan, the crankshaft will pick this oil up and wrap it around the crank like taffy.

How much oil do you have in the engine?

Pull the pan off and fill it up with the amount of oil you have been using, this will give you a pretty good perspective on where the oil level is.

06-27-2007, 08:53 PM	#1
Stock1528 Junior Member Join Date: Feb 2005 Location: Warwick, RI Posts: 48 Likes: 0 Liked 0 Times in 0 Posts	Oil Pressure Problem.... I have a 1972 Chevelle I/SA w. a 350. Around the pits, in the burnout, oil pressure is steady and fine. Going down the track, drops to about 20-25 lbs. Lift at the stripe and jumps back up to 60 lbs. Have had engine out, checked bearings, did a leak down, put on dyno, everythin checked out. Anyone have any idea what would cause this? Justin Picillo I/SA 1528

06-27-2007, 09:20 PM	#2
BillK Member Join Date: Nov 2005 Location: Waldorf Md Posts: 230 Likes: 12 Liked 30 Times in 17 Posts	Justin, I sounds like an oil pan / pickup problem. Maybe combination of both. How far off the bottom of the pan is the pickup ? Baffles in the pan ? Maybe some more details on the oiling system such as pump, pan etc. __________________ Bill Koustenis

06-27-2007, 10:01 PM	#4
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,090 Likes: 1,534 Liked 1,748 Times in 398 Posts	Do you have screens in the oil drain backs? Do you have a high volume oil pump? How much oil do you have in the pan? Have you tried running it with an extra quart in it? __________________ Alan Roehrich 212A G/S

06-27-2007, 10:44 PM	#6
Tyler Wolcott Junior Member Join Date: Jun 2007 Posts: 8 Likes: 0 Liked 0 Times in 0 Posts	Taffy I second that, if you have too much oil in the pan, the crankshaft will pick this oil up and wrap it around the crank like taffy. How much oil do you have in the engine? Pull the pan off and fill it up with the amount of oil you have been using, this will give you a pretty good perspective on where the oil level is.

06-27-2007, 09:27 PM	#3
Bub Whitaker Member Join Date: Feb 2005 Location: Dayton, MD Posts: 222 Likes: 0 Liked 1 Time in 1 Post	Justin... Call me... 301 490 3131

06-27-2007, 10:36 PM	#5
Stick Racing Member Join Date: Mar 2007 Posts: 169 Likes: 4 Liked 0 Times in 0 Posts	Possibility you have too much oil in the pan. Call Bub, he has alot experience in this department. Trust me... Andy Stone B/S 1102