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Old 05-13-2020, 12:53 PM   #16
FirstOwner69
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Join Date: May 2010
Location: Wisconsin & Arizona
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Re: TH400 vacuum line

Quote:
Originally Posted by NGN View Post
The original vacuum line has a tab on it so that it can be bolted securely to trans.
Not that original, off by a tab.
NGN
Correct. The 4th picture I posted in post 3 shows the tab on the vacuum line, as well as the tab on the dipstick tube, attached by a transmission bolt. It doesn't look like the Right Stuff line they show has the tab.

Quote:
Originally Posted by KQQL IT View Post
Mine has an adjustable modulator, the nipple sticks out 90° to yours.
And has a elbow in the vacuum line
Sounds like your modulator was replaced. I don't believe GM used an adjustable version. Do you have a picture of the transmission attachment point?
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