heater vacuum lines
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Joined: Dec 2004
Posts: 121
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From: murphy,n.c
Car: 88iroc
Engine: 355 blueprint engine
Transmission: raptor built 700r4
Axle/Gears: 373
heater vacuum lines
i looked in the search and found some good threads on vacuum lines to the heater.my question is when they put my new engine in they did'nt connect the two hard vacuum lines.for the heater to work right. i have a 88 iroc and went from tpi to carb i guess it had a heater control valve but it does'nt anymore.do i need one?one line is straight and the other has a elbow since i no longer have a plenum where can i hook these to.
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Joined: Mar 2002
Posts: 4,812
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From: 62656
Car: 1991 S10 pickup 2700lbs
Engine: 4.3L Z TBI
Transmission: 700R4
Axle/Gears: 3.08 7.625"
hum ive never seen two vac lines to the heater control
always only one through the firewall with the wiring harnessand it connects to the intake manifold
good luck
always only one through the firewall with the wiring harnessand it connects to the intake manifold
good luck
Thread Starter
Member
Joined: Dec 2004
Posts: 121
Likes: 0
From: murphy,n.c
Car: 88iroc
Engine: 355 blueprint engine
Transmission: raptor built 700r4
Axle/Gears: 373
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