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Old 06-03-2019, 08:08 PM   #1
uncle
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70 Carb ?

Can anyone tell me if a 70 model truck with a 350 engine has only the metal gasket under the carburetor?
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Old 06-04-2019, 12:39 AM   #2
68bowtie
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Re: 70 Carb ?

My 1970 350 has the original q-jet with a 1/4" heat insulating gasket. Not sure if it's original though. It's fairly old.
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Old 06-04-2019, 06:54 AM   #3
AASmedic
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Re: 70 Carb ?

Quote:
Originally Posted by uncle View Post
Can anyone tell me if a 70 model truck with a 350 engine has only the metal gasket under the carburetor?

Should have the 1/4 inch thick gasket between the carb and the manifold to prevent the carb from getting too hot and boiling the fuel.
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Old 06-04-2019, 02:28 PM   #4
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Re: 70 Carb ?

I've been researching this since I replaced my carb gasket on Friday. The preferred gasket is about 1/4" thick with an open center. Fel-Pro 60249 is what I used.

You will need to look at the intake manifold. I heard there are some manifolds that have a heat vent port that require the metal gasket and a standard gasket on the top and bottom of the metal gasket.
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Old 06-04-2019, 05:13 PM   #5
uncle
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Re: 70 Carb ?

Thanks for the response. I think that will get us on the right track
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Old 06-04-2019, 05:42 PM   #6
geezer#99
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Re: 70 Carb ?

Some info here plus pics of the intake with the hot slot that needs a metal gasket.
https://www.corvetteforum.com/forums...d-problem.html
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Old 06-05-2019, 06:30 AM   #7
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Re: 70 Carb ?

Good post. Lars Grimsrud knows his stuff. Just about any time I'm looking for Q-Jet stuff, I find one of his posts.
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