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Author Topic: difference between 1259 and 2785 gasket  (Read 998 times)

Offline Shermanator

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difference between 1259 and 2785 gasket
« on: January 08, 2019, 04:28:46 PM »
In my HP rebuild kit I got two air horn gaskets.  One marked 1250 and the other marked 2785.  I cannot see any difference between them and they both seem to match the gasket that came out.  What am I missing here and what should I be looking for to determine which to use?  My carb number is 17066575.  This is a service replacement that I bought from a Chevy dealer in about 1990 as the correct carb for my 1982 K20.
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Offline Shermanator

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Re: difference between 1259 and 2785 gasket
« Reply #1 on: January 08, 2019, 05:01:45 PM »
Just noticed that I have a typo in the subject line.  The gaskets I received are marked 1250 and 2785 as stated in the body.
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Offline Frank400

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Re: difference between 1259 and 2785 gasket
« Reply #2 on: January 08, 2019, 06:09:28 PM »
Measure the thickness of both.  I'm pretty sure Cliff makes a gasket that is a tad thicker to compensate for slight warpage or mismatch between the parts. 

  I may be wrong but not a big deal to check that.

   Frank.
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