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

1988 Vacuum line question

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Old 11-29-2015, 04:58 PM
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TQM3
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Default 1988 Vacuum line question

during the process of installing a Super Ram (painful) I have broke the vacuum line going to the inside of the car for the ac/heater. I can't seem to locate the stub, is it buried inside of the wiring harness? Don't want to drill a hole in the firewall If I can help it....Thanks in advance!
Old 11-29-2015, 09:57 PM
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jv9999
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Yes, it's wrapped in the harness behind the distributor and comes out above the passenger side foot well.
Old 11-29-2015, 10:44 PM
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Cliff Harris
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Originally Posted by TQM3
during the process of installing a Super Ram (painful) I have broke the vacuum line going to the inside of the car for the ac/heater. I can't seem to locate the stub, is it buried inside of the wiring harness? Don't want to drill a hole in the firewall If I can help it....Thanks in advance!
The end of the vacuum line is buried in the sealer in the bulkhead feedthrough where all the engine wires go through the firewall. You have to dig it out. I found that WD-40 will dissolve the yellow stuff.

See this thread for more info (mainly post #27):

https://www.corvetteforum.com/forums...th-fire-2.html
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