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Old 06-11-2018, 01:48 PM   #1
Mike harris
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Gas tank filler neck question

Just bought a new filler neck gasket, aaaaand it doesn't fit right. It's a 70 truck so I bought the 67-70 gasket but it's slightly to big for the filler neck but fits the body fine. Is the 71-72 gasket bigger or smaller (as in they sent the wrong one) or is this just a cheap junk gasket?
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Old 06-11-2018, 01:50 PM   #2
Mike harris
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Originally Posted by Mike harris View Post
Just bought a new filler neck gasket, aaaaand it doesn't fit right. It's a 70 truck so I bought the 67-70 gasket but it's slightly to big for the filler neck but fits the body fine. Is the 71-72 gasket bigger or smaller (as in they sent the wrong one) or is this just a cheap junk gasket?
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Old 06-11-2018, 04:41 PM   #3
LockDoc
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Re: Gas tank filler neck question

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Maybe your tank has been replaced at some point in it's life.... I thought there was only one size but I'm not 100% sure.

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Old 06-11-2018, 08:31 PM   #4
dmjlambert
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Re: Gas tank filler neck question

That looks kind of strange the way it is fat near the tank, then gets skinny and then fat again at the cap. On my old and replacement 1969 tanks it was the same size all the way from the tank to the cap.
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Old 06-11-2018, 09:01 PM   #5
Boog
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Re: Gas tank filler neck question

There are two neck sizes shown in the LMC catalog.
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Old 06-11-2018, 09:02 PM   #6
Classic Heartbeat
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Re: Gas tank filler neck question

Looks like a 72 non EEC tank to me. WES
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