Me And A Friend Of Mine Are Working On His 2000 Ss When We Noticed That It Had A Oil Pressure Problem Under W.o.t. It Would Drop To Around 20 Lbs. Then When You Would Let Off It Would Go Back To 60 Or So Which I Think Is Prob The Pick Up Tube O Ring Sucking Air... No For The Real Problem After The Oil Pressure Prob We Checked The Oil And Its 1 1/2 Quarts Low After 1000 Miles So We Topped Her Off With Some Mobile One And Checked The Coolant Its A Half A Gallon Low So I Fill It Up And Discover The Rad. Has A Large Amount Of Oil In It... Now This Is My 4th Or 5th Ls1 To Mod And I've Built Many Many Gen I Sbc My First Thought Was Blown Head Gasket But... There Is Oil In The Coolant But No Coolant In The Oil And The Motor Still Runs Strong So My Only Other Thought Is Cracked Head Or Block Any Good Input Or Thoughts Are Greatly Appreciated