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505 Stroker Oil Level

My 512 has a 4.25 stroke crank, and doesn't smoke or burn oil. And it goes to 6500 RPM or more quite often. Milodon hi volume external feed pump, with a windage tray. A longer stroke crank may need a special tray made for that, mine does. Find out your exact stroke. Is it 4.15? I think that's what a 505 has. 400 block? You could also try a higher viscosity, 20W50 oil. What are you running now?
My 505 uses the 4.25”
 
My 505 uses the 4.25”
What is your bore size? 440 block? Or 400. Just curious. The important thing here is keeping the crank from whipping up the oil in the pan. More clearance beteeen the oil and crank, reduces windage, and reduces the chance of oil whipping up from the crankshaft throws. That puts more oil on the cyl walls, and reduces horsepower. Chrysler claimed a 15 horsepower increase at 5000 RPM, just by adding the windage tray!
 
The reason I’m thinking it must not be rings or valve guides or anything mechanical like this is because wouldn’t the oil bypass happen whether there were 4 or 5 quarts in the engine or 7?

The fact that it only happens when the oil level is under 7 makes me think it must be pickup windage or some other pick up issue.
 
The reason I’m thinking it must not be rings or valve guides or anything mechanical like this is because wouldn’t the oil bypass happen whether there were 4 or 5 quarts in the engine or 7?

The fact that it only happens when the oil level is under 7 makes me think it must be pickup windage or some other pick up issue.
The fact that you put 7 quarts in and get 4 or 5 out says it’s going somewhere. It’s either on your garage floor, or it went out the exhaust pipe.
 
Check your intake gasket as well. I had one that wasn't sealing by the ports on the intake and was sucking oil past them like crazy!
:thumbsup:

This

First off , any oily residue in your tailpipes / tips ?

Second , have someone follow you - Get on the gas , full throttle high rpms (Engine is at low vacuum)

Now let off gas pedal , deacceleration , engine is at its highest vacuum.
Thats when it will suck all the oil thru the intake gasket/valley pan into the intake ports , and you will have blue smoke out the tailpipe or tailpipes
 
Here are pictures of the old pan flange. Hard to tell if there is a windage tray. It does not look like there is but I could be wrong.

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do a leak down test on all cylinders . if the builder did not hone the cylinders may let to much oil on the cylinder walls and then it gets burned a leak down test may or may not show this. you may need to remove the oil pan for 2 things . 1. check the windage tray is not cut up or there. 2. you can look at the cylinder walls and refer to the repair manual in engine repair chapter to see a good cross hatch on the cylinder walls.also when checking oil after running give it 2 min for the run off oil from valley/and inside block and other components.
 
do a leak down test on all cylinders . if the builder did not hone the cylinders may let to much oil on the cylinder walls and then it gets burned a leak down test may or may not show this. you may need to remove the oil pan for 2 things . 1. check the windage tray is not cut up or there. 2. you can look at the cylinder walls and refer to the repair manual in engine repair chapter to see a good cross hatch on the cylinder walls.also when checking oil after running give it 2 min for the run off oil from valley/and inside block and other components.

Leakdown and compression test results were fine (160’s-170’s). It dynos 550 at crank 400 at wheels.
 
Did you ever pull a plug or two and have a look?

Not having a windage tray might cost you some power but it isn’t gonna solve your oil loss problem.
 
my old eyes and small 'puter screen aside, I think there is a tray in there. you'll just have to peel some stuff back for a good look.
 
Hard to tell by the photos.But, Most have gasket to the block,tray flange,gasket,oil pan.That's what it kinda looks like.More modern trays have the gaskets bonded to the tray.(don't look like modern).
I went over all the posts and nothing is said about what you are using for breathers. PCV ? Vac-u-pan ? Maybe open breathers ?
Just spit ballin,sometimes you hit somethin'.
 
I think it has a windage tray
That's the shiny metal colored edge between the gaskets.
 
If it has a tray and there is no evidence the crank is hitting it, why go to all the hassle of changing it? It sure as hell isn't causing the oil loss !!
 
I agree. Seems to be some uncertainty if it even has one. Should unbolt the pan slightly, pry it down slightly, find out for sure. Most builders would have installed one.
 
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