67 BB OIL DIPSTICK TUBE

[Rob A.]

How is the oil dipstick tube sealed where it enters the oil pan, or isn't it?

[Mike M.]

Re: 67 BB OIL DIPSTICK TUBE

I uise a small bead of The Right Stuff ( a Permatex product that is RTV-like). mike

[Joe L.]

Re: 67 BB OIL DIPSTICK TUBE

Rob------

Originally, it was strictly an interference fit in the oil pan recepticle. However, a use of a sealer like Mike suggests is a good idea. Properly applied and finished, no judge will be the wiser.

[Craig S.]

Re: 67 BB OIL DIPSTICK TUBE

Joe - I don't know if this trick will work on the vettes, but my 81 454 pickup has a thin neoprene O-ring on the OD of the dipstick tube, so there is a positive seal between the pan flange and the tube. There was even a flared out flange on the truck tube to prevent the O-ring from rolling up the tube. Probably isn't that way on the vettes, I haven't compared my vette pans to the trucks nor the tube itself......Craig

[kelly theaker]

Re: 67 BB OIL DIPSTICK TUBE

i am not certain but i thought the aim showede a 69 with a small o ring and was wondering myself if this was in fact correct. lets get a judge involved , they know all

[Joe L.]

Re: 67 BB OIL DIPSTICK TUBE

Craig-----

The o-ring would probably work for a Corvette application even though the system wasn't designed for such a seal. There is an annular collar swaged onto the dipstick tube and this collar seats into the recepticle in the oil pan. The recepticle has a flared end which would serve as a seat for the o ring. At least, the last available SERVICE pan, GM #14091356, has this flared end on the recepticle tube. I'm not sure about earlier PRODUCTION pans.

[John H.]

Re: 67 BB OIL DIPSTICK TUBE

The original dipstick tube used an O-ring type seal #3738405 between the bead on the tube and the receptacle on the pan.

[Joe L.]

Re: 67 BB OIL DIPSTICK TUBE

John-----

I was completely unaware of that, but you're absolutely correct. Good thing I found that out, too. I'll definitely want to do that when I assemble the tube into the oil pan of my "ZL-1" project. I knew that there was a good reason for my "procrastination" on that project.

[Rob A.]

Re: 67 BB OIL DIPSTICK TUBE

I now see they show a seal in the assembly manual...

[Craig S.]

Re: 67 BB OIL DIPSTICK TUBE

Yep - glad we cleared that up. I had ordered that seal from my friendly parts buddy, will use it on my crate LS6 project too......Craig