part ID & smog pump removal

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bucket

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Iirc, the original routing has coolant plumbed from front of intake, to tbi adapter, then out of tbi adapter to heater core. It's basically just run inline with the heater core.

I don't remember why, but I bypassed the adapter when I swapped in a replacement engine into my '90. It's plumbed like so:

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squaredeal91

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Iirc, the original routing has coolant plumbed from front of intake, to tbi adapter, then out of tbi adapter to heater core. It's basically just run inline with the heater core.

I don't remember why, but I bypassed the adapter when I swapped in a replacement engine into my '90. It's plumbed like so:

You must be registered for see images attach
Nice strapon screwdriver! I've had a set of those since the 90s lol
 

496bb

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CL
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1987
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Suburban R20
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454
Iirc, the original routing has coolant plumbed from front of intake, to tbi adapter, then out of tbi adapter to heater core. It's basically just run inline with the heater core.

I don't remember why, but I bypassed the adapter when I swapped in a replacement engine into my '90. It's plumbed like so:

You must be registered for see images attach
Yep, that's what I plan to do. Want to replace unknown age heater hoses anyway, cheap insurance. Gonna do a backflush with the current hose and one of those prestone adapters i have laying around, then put the new hoses on - maybe do a shutoff valve for the heater core. Summer in AL is HOT!! Need all the help I can get.
 

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