Filler neck differences 76-79?
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Mountain Pass
Joined: Jan 2021
Posts: 141
Likes: 46
From: Austin, TX
Filler neck differences 76-79?
I'm putting a 79 bed on a 76 truck, and I have a feeling I'll need a different filler neck. Does anyone know the differences? Will I need anything else?
Thanks!
Thanks!
Tuned
Joined: Jun 2018
Posts: 458
Likes: 123
From: Arkansas
i’d have to look at the two I have again to remember for sure but the difference is based on whether or not your fuel tank came with or without EVAP. The factory EVAP tank neck has shallow slots for the lugs on the cap to lock into, the non evap tank has deeper lugs . Also non evap uses a vented cap
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Mountain Pass
Joined: Jan 2021
Posts: 141
Likes: 46
From: Austin, TX
Thanks! It has a recent replacement tank installed by shop, and I haven't looked. It's at the body shop right getting the final touches done, but I bet it's non-evap tank with a bed that normally goes with an eval setup. Could be tricky.
Tuned
Joined: Jun 2018
Posts: 458
Likes: 123
From: Arkansas
my 76 f100 has an in cab tank and aft tank. Aft tank has a square filler door on the bed and had evap stock. Maybe this is why when I ordered a fuel cap for the rear tank and non evap it didn’r fit
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Mountain Pass
Joined: Jan 2021
Posts: 141
Likes: 46
From: Austin, TX
Then my old bed wasn't original (not surprising), as it had a flap leading to a space with the cap and filler inside. And a lot of room, like maybe it should have had that plastic filling it in, so now I'm even more sure it wasn't an original bed. Probably a 76 filler and cap behind a 78/79 style flap.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
1973/79 F100/350 Styleside pickup left quarter panels (bed sides):
1973/76's have exposed fuel caps, 1977/79 fuel caps are behind doors.
The filler tubes and hoses are different!
1973/76's have exposed fuel caps, 1977/79 fuel caps are behind doors.
The filler tubes and hoses are different!
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