Boy from Oz Posted January 2, 2010 Share Posted January 2, 2010 My LS1 came with an oil pan not suitable for an S30 installation. The original pan contained the dipstick hole. I now have the correct pan and wish to fit the appropriate dipstick. Measurements of both dipstick outers tubes and the bore of the hole in the original oil pan are all 3/8". My first concern was whether I could just drill a 3/8" hole or should I go undersize and finish with a reamer. How critical is this fit - has anyone had trouble with leakage? Secondly. I took a couple of photos to illustrate this and now I'm not sure whether it is just a plug in the hole that can be punched out - any ideas? Quote Link to comment Share on other sites More sharing options...
ColtGT4g63 Posted January 2, 2010 Share Posted January 2, 2010 With the pan off the block, maybe try using a punch to see if you can knock out the "freeze plug" ? What pan did the motor come with, that had the dip stick in it? The dip stick tube seals with an o-ring of course, I've never had a leak issue on mine. Quote Link to comment Share on other sites More sharing options...
Boy from Oz Posted January 3, 2010 Author Share Posted January 3, 2010 I have now received advice from various sources that it is a plug that can be knocked out with a punch from the inside, i.e. no drilling required. The engine was fitted to an Aussie car and the pan had a deep sump at the front which would foul on the crossmember. Quote Link to comment Share on other sites More sharing options...
ColtGT4g63 Posted January 3, 2010 Share Posted January 3, 2010 Sounds good! Quote Link to comment Share on other sites More sharing options...
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