C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Vacuum line issue ‘85

Old Jul 13, 2020 | 08:21 PM
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Default Vacuum line issue ‘85

Found a broke vacuum hose and can’t figure out where it goes, here’s photos, please help
This is from the infamous “T” I’ve read about. Noticed it sliced in 2 spots so followed it back to the T.

Everyone photos looked different on this side from mine but said that Vaccum line should tie in over on this side.

I noticed this metal “clip”. Would it perhaps connect there? Hose is 5/32
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Old Jul 13, 2020 | 08:44 PM
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The one by booster looks like the cruise brake pedal switch hose. The other there should a 90% elbow probably hiding behind Distributor
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Old Jul 13, 2020 | 08:57 PM
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theres a T under the booster with a line ran to cruise set up and other to canister by left front headlight and the busted hose was wrapped around distributor but didnt see where it attaches to and everyones car seems to all look different on that side so im really confused as to where it attaches...

1985 C4 with doug nash 4+3 manual transmission
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Old Jul 14, 2020 | 05:15 AM
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Follow that rear vac line from the intake plenum; it should lead into a T with one branch going through the firewall to the HVac system...not sure there the other branch goes.
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Old Jul 15, 2020 | 07:58 PM
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There should be a check valve back by the distributor. One end goes to HVAC through the firewall and the other goes to cruise control/vacuum tank (with another T down the line).

More info on this thread

https://www.corvetteforum.com/forums...e-routing.html
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