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So I just finished our GM L96 6.0L build for our 65 Cutlass. I used a Holley 302-3 oil pan and bought the LS3 dipstick (part # 12669528) and tube (part # 12625031), which are the exact parts Holley recommends in their instructions for use with this oil pan. When I insert the dipstick in the tube it goes all the way in but when we try to remove the dipstick it gets caught on something inside the pan and it also gets caught on the end of the tube and you have to remove the tube in order to feed the dipstick back up the tube. What's very odd is that Holley's dipstick and tube kit (part # 320-15) says their dipstick for this pan measures 26.25 inches from inside the handle to the end of the dipstick. When I measure the LS3 dipstick from inside the handle to the tip it measures just over 31.5 inches. At this length the dipstick is resting on the bottom of the oil pan. I did try to use the dipstick tube that came with the engine that measure about 1.25 inches longer then the LS3 dipstick tube, but I still run into the same problem with the dipstick getting caught on something inside the engine and also the end of the tube. I also made sure that I cut the windage tray just like the instruction said. So with all this said, am I missing something, am I doing something wrong and has anyone else ran into this issue? Does anyone have any recommendations for another dipstick I can use? Thanks for all of the help and Happy Easter.
I purchased the 302-3 oil pan and recommended tube and dipstick and didn't have any issues. I would verify, as I believe mentioned above, to ensure you were not sent the wrong part.
So it turns out that the dipstick I had was label with the wrong part #. Go figure. Stopped by the dealership on the way home to pick up the correct dipstick ( Part # 12669528) and it fit like a charm. After comparing the two dipsticks it appears like the truck dipsticks have a blue o-ring at the top by the handle and the cars have a red o-ring. Thanks for all of the help.
04-21-2019, 08:27 PM
Holley 302-3 Oil Pan 
