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12-22-2025, 10:04 AM
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#1 |
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Registered User
Join Date: Feb 2013
Location: Cottonwood, Arizona
Posts: 1,397
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TH400 vacuum line connection
I just got my 84 Sierra back from getting another engine, and when driving it home it wouldn't shift. I looked and noticed the vacuum line wasn't on the modulator, but can't find or remember where I had it hooked. Can someone please show me where to connect it on the engine? I have a 350 with an Edelbrock carb. Thanks
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12-22-2025, 10:38 AM
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#2 |
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Senior Member
 
Join Date: Dec 2009
Location: TN.
Posts: 9,870
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Re: TH400 vacuum line connection
Mine is run to this tee behind the Carburetor.
__________________
________________________________________________________________________________________ ____________________________________________ The early bird gets the worm, But the second mouse gets the cheese 85 Chevy K-20 63 Impala (my high school car) http://67-72chevytrucks.com/vboard/s...Crew Cab Build |
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12-22-2025, 01:02 PM
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#3 |
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Registered User
Join Date: Aug 2012
Location: Oklahoma City, OK
Posts: 2,809
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Re: TH400 vacuum line connection
2nd what Getter-Done said for the normal spot. But any manifold vacuum source should work if the manifold isn't near standard.
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12-23-2025, 09:24 AM
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#4 |
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Registered User
Join Date: Feb 2013
Location: Cottonwood, Arizona
Posts: 1,397
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Re: TH400 vacuum line connection
Thanks guys. I appreciate the info and pic. Merry Christmas
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01-13-2026, 12:04 PM
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#5 |
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Registered User
Join Date: Feb 2013
Location: Cottonwood, Arizona
Posts: 1,397
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Re: TH400 vacuum line connection
I got it fixed. Accidentally left it at the shop where the engine was put in. The T was in the intake as well. I did a fluid and filter change and she shifts smooth as glass.
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