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Old 01-02-2018, 06:44 PM   #1
57NAPCO
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Rebuilding the TBI on 88 K30...

I thought Id go ahead and order the TBI gasket set for one of my trucks. Just finished the top. What a pain in the arse removing the base plate with water inlet/outlet. Should have left it alone...
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Old 01-02-2018, 07:05 PM   #2
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Re: Rebuilding the TBI on 88 K30...

The inlet/outlet on the back side that threads into the base wont budge, crapola
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Old 01-02-2018, 07:45 PM   #3
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Re: Rebuilding the TBI on 88 K30...

Anyone know what the heck that base plate with coolant going thru it is for? To cool the TBI?
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Old 01-02-2018, 07:49 PM   #4
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Re: Rebuilding the TBI on 88 K30...

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Old 01-02-2018, 07:50 PM   #5
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Re: Rebuilding the TBI on 88 K30...

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Old 01-02-2018, 08:07 PM   #6
b454rat
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Re: Rebuilding the TBI on 88 K30...

Dunno why they are on there, the later 454s don't have it. I think for faster warm ups, and to keep from hydrolock when hot. I miss my TBI 454s...
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Old 01-03-2018, 01:53 AM   #7
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Re: Rebuilding the TBI on 88 K30...

Supposed to keep the Throttle body hot for better fuel atomization and emissions. Poor design by GM. A replacement manifold from Edelbrock puts the water into the manifold itself without the spacer. Gasket underneath the spacer tends to create a vacuum leak after quite a few miles.
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Old 01-03-2018, 11:00 AM   #8
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Re: Rebuilding the TBI on 88 K30...

Thanks!
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