1993 Corvette manual transmission with new GM Goodwrench 350 cu in LT4 engine, LT4 Hotcam, Canton roadrace oil pan, and headers. Approx 1200 miles on the engine. Oil pressures are 40psi at idle and 60-65 psi at WOT. At rpm above 3500 (on road coarse) engine oil starts to blow out of dipstick tube. As the engine warms up and the higher the rpm the more oil is blown out. New working PCV valve. Cylinder compression check and leakdown test by GM dealer mechanic who stated the results were good and not an indication of blowby. Leakdown of between 12 and 15 psi for all cylinders (done dry, no oil added to cylinders during the test and the engine was warm but not at operating temps). This is a track car only. What do you suggest I do to alleviate the problem? Aside from this, the engine runs strong. Thanks, in advance for any help! --Ralph
have the same problem?
Monday, November 26th, 2007 AT 1:51 PM