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Old 09-19-2022, 04:57 PM
i4abuygto's Avatar
i4abuygto i4abuygto is offline
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Join Date: Mar 2008
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Default 79 403 loose dip stick tube - how to seal.

Hello guys,
I was in replacing the starter on my 79 403 and noticed that the aftermarket dipstick is loose in the block. Has anyone installed one of these?
There are two "ribs" in the tube in addition to a "seat" ring above those. I can run the tube into the block until it hits the first rib and I cant seem to push it down in any further to seat it on the first rib. It reads correctly at this point so I dont think I am suppose to tap it passed that first rib.
It is an aftermarket dipstick tube and has no mounting tab.
There is crud getting inside the tube. The dipstick has no seal at the top either so the crud is probably getting in there.
Can I just seal with silicone or ATV if I clean up the block good and seat it with the ATV.
Or, What can I do to hold it tightly in place?
Do you think I have to press it further into the block so the ribs in the tube help to pressure fit it. If so, I believe I will be too deep into the block to get the correct reading.
Let me know your thoughts.
Thank you.
Mark