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-   -   AC Delco Seal Tabs (https://classracer.com/classforum/showthread.php?t=69908)

brian schuetta 05-16-2018 09:28 AM

AC Delco Seal Tabs
 
Anyone using these? They are placed in a water passage of an engine during assembly and dissolve when water is added? Was shown these things yesterday but had never seen them before.

Bobby DiDomenico 05-16-2018 09:36 AM

Re: AC Delco Seal Tabs
 
Had, and used, a couple of packages of them when I had the Buick. Wanted to make sure I didn't have to yank the heater core.

Dragsinger 05-16-2018 02:07 PM

Re: AC Delco Seal Tabs
 
Brian,

the Delco tabs are a good product. In addition to the method you mentioned they can be put into any cooling system at any time.

The tabs were developed for the North Star Cadallic aluminum blocks which leaked around the head studs.

killintime6968 05-16-2018 02:24 PM

Re: AC Delco Seal Tabs
 
I have used them many times over the years for weaping headgaskets and heads. The PN is #10953473

Chevy55 05-16-2018 02:41 PM

Re: AC Delco Seal Tabs
 
https://www.amsoil.com/techservicesb...%20Tablets.pdf

FED 387 05-16-2018 03:45 PM

Re: AC Delco Seal Tabs
 
12378255 GM part number

Tom Goldman 05-16-2018 08:35 PM

Re: AC Delco Seal Tabs
 
The GM "horse pills" saved my butt many times when I ran welded GM 074 castings.
Subaru also has a sealer that works amazingly well and its cheap, about $1.50 for a 3 oz bottle. they call it a "conditioner" but it really works on leaky heads and since its a liquid ,it doesn't block up the rad passages.

brian schuetta 05-17-2018 10:45 AM

Re: AC Delco Seal Tabs
 
Will try them then on the new engine we are about to finish.


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