Oil Pressure Under Acceleration
Thread Starter
Staging Lane
Joined: Feb 2023
Posts: 65
Likes: 15
Oil Pressure Under Acceleration My LT1 has the stock oil pump with a pink spring. On a chassis dyno it sits at a solid 65psi for the whole pull. On the drag strip (the next day, no other changes) it bobbles between 65 and around 45 throughout the pass. The oil level is full according to the dip stick. It has the stock pan with the stock windage tray intact.
Is this caused by oil sloshing away from the pickup? Or oil piling up in the rear of the pan and getting aerated by the crank?
Does it help to run the oil level a little higher or lower? Is there a better windage tray to swap in? Do I have to get a Canton pan?
Thanks
Is this caused by oil sloshing away from the pickup? Or oil piling up in the rear of the pan and getting aerated by the crank?
Does it help to run the oil level a little higher or lower? Is there a better windage tray to swap in? Do I have to get a Canton pan?
Thanks
TECH Resident
Joined: Oct 2006
Posts: 993
Likes: 173
From: Euless, TX
My LT1 has the stock oil pump with a pink spring. On a chassis dyno it sits at a solid 65psi for the whole pull. On the drag strip (the next day, no other changes) it bobbles between 65 and around 45 throughout the pass. The oil level is full according to the dip stick. It has the stock pan with the stock windage tray intact.
Is this caused by oil sloshing away from the pickup? Or oil piling up in the rear of the pan and getting aerated by the crank?
Does it help to run the oil level a little higher or lower? Is there a better windage tray to swap in? Do I have to get a Canton pan?
Thanks
Is this caused by oil sloshing away from the pickup? Or oil piling up in the rear of the pan and getting aerated by the crank?
Does it help to run the oil level a little higher or lower? Is there a better windage tray to swap in? Do I have to get a Canton pan?
Thanks
Thread Starter
Staging Lane
Joined: Feb 2023
Posts: 65
Likes: 15
The one that sandwiches between the rear main cap and the pump?
When the same thing happened to me it turned out to be windage due to the oil level being too high. The engine (383) did not like the Canton oil pan being completely full. I took about 3/4 of a quart out and the problem went away. Drain the pan 1/4 quart at a time and see what happens.
