Hello my problem is this. I have a 69 440 40degree over bore forged flat top pistons. Heads are Int 2.08" Exh 1.75 3 angle cut. Cam 509" 292 duration. Every time i do a burn out oil leaks from the front of my oil pan. I just installed a new windage tray and new gaskets and still i have this problem. I have run this motor since 1997 and have always used the same evacuation system. The problem showed up around 2005 and continues to this day. I used to run 11:90's @ 114mph now 12:90's @ 107mph. Head gaskets are new as well. Can you help me answer this problem? Does not burn oil or smoke or over heat.

you need to do a leak down test to see if you are getting excessive crankcase pressure

you might want to do a leakdown test, you may have worn rings or a burned piston causing whay to much blowby forcing oil out