'66 fuel sending unit

[Gary B.]

Can anyone tell me if the fuel sending unit in the accompanying photo would be correct for '66 in terms of the insulator style and color (milky white) and the pin style of the electrical connectors?

Thanks,

Gary

[Russ S.]

Re: '66 fuel sending unit

Gary, I believe mine in my 66 is original. It has that style pin with the second pin very similar style only smaller dia. than the other pin. My insulator is very different. It is thinner and sets below a hex nut. The stamping is the same as yours.

[Gary B.]

Re: '66 fuel sending unit

Gary, I believe mine in my 66 is original. It has that style pin with the second pin very similar style only smaller dia. than the other pin. My insulator is very different. It is thinner and sets below a hex nut. The stamping is the same as yours.

Russ,

Do you have a photo of the unit from your '66 that you could post?

Gary

[Peter J.]

Re: '66 fuel sending unit

Gary
Here is a picture of my original 66 unit. I will see if I have any better pictures as it is off being restored. The junk replacement units units look to be a fire hazard to me. I got a better replacement unit from a good vendor but my calibration is way off even with this more expensive unit so off to the restorer for the original that never gave me any trouble.
Pete

[Peter J.]

Re: '66 fuel sending unit

Here is another picture I got from the internet a few years back when I was looking for an original.

[Russ S.]

Re: '66 fuel sending unit

Gary, The two pis posted are what mine looks like. I will try getting a pic of mine also later. Since you asked the question I removed the gas tank from a customers 66 chassis that I am going to be restoreing. I can't say whether his is original or not but it is exactly like yours with the plastic nuts instead of the steel nuts.

[Joe R.]

Re: '66 fuel sending unit

Gary,

Yes, that unit is correct for 63-67 SB or BB. I have four of those exact units from 63-67 Corvettes. Everything on it is correct including the color of the insulators.

JR

[Gary B.]

Re: '66 fuel sending unit

Gary,

Yes, that unit is correct for 63-67 SB or BB. I have four of those exact units from 63-67 Corvettes. Everything on it is correct including the color of the insulators.

JR

JR,

Are you saying the one I posted the image of is correct? Or the one Peter posted? Or both? Should the one I posted the image of have nuts next to the insulators? I think I can see about 1 thread or so, no more, next to the insulator, so it would be hard to have a nut thread on securely. Should there be a nut on each post and something compresses to allow more thread engagement?

Gary

[Scott S.]

Re: '66 fuel sending unit

Can anyone tell me if the fuel sending unit in the accompanying photo would be correct for '66 in terms of the insulator style and color (milky white) and the pin style of the electrical connectors?

Thanks,

Gary

Gary,

The 1966 and 1967 AIMs show the same part number for the fuel sending unit, GM #6425827. My '65 AIM shows no part number (it's blank next to the part name), and 1968 used a different part number.

The sending unit I have is (I think) original to the '67 I'm working on. I had it restored a year or so ago, but I have not installed it yet. From what I can see, the one you show looks the same as mine, here are some before and after pictures to compare with yours.

Before:

[John H.]

Re: '66 fuel sending unit

Here's another original sender.

[Scott S.]

Re: '66 fuel sending unit

Here are the after pictures. As you will see, they changed the float.

[Joe R.]

Re: '66 fuel sending unit

JR,

Are you saying the one I posted the image of is correct? Or the one Peter posted? Or both? Should the one I posted the image of have nuts next to the insulators? I think I can see about 1 thread or so, no more, next to the insulator, so it would be hard to have a nut thread on securely. Should there be a nut on each post and something compresses to allow more thread engagement?

Gary

Gary,

You are reading much to much into this!!!!! First the image of your fuel sender is correct. The nut holds the studs in place. There is NO nut other than what you see. Those are studs and the wires have connectors that push on to those studs with a rubber boot covering the entire stud and insulator.

JR

[Gary B.]

Re: '66 fuel sending unit

Gary,

You are reading much to much into this!!!!! First the image of your fuel sender is correct. The nut holds the studs in place. There is NO nut other than what you see. Those are studs and the wires have connectors that push on to those studs with a rubber boot covering the entire stud and insulator.

JR

Thanks for the clarification. Since my sender has no nuts, I think the pins must be falling thru, which is why I can't see more exposed threads. I'll give the pins a gentle tug and see what happens.

Gary

[Russ S.]

Re: '66 fuel sending unit

Gary,

The 1966 and 1967 AIMs show the same part number for the fuel sending unit, GM #6425827. My '65 AIM shows no part number (it's blank next to the part name), and 1968 used a different part number.

The sending unit I have is (I think) original to the '67 I'm working on. I had it restored a year or so ago, but I have not installed it yet. From what I can see, the one you show looks the same as mine, here are some before and after pictures to compare with yours.

Before:

Scott, The one you show and the one Gary shows are not the same. Gary's has the white plastic nuts and yours are the steel nuts.

[Russ S.]

Re: '66 fuel sending unit

JR,

Are you saying the one I posted the image of is correct? Or the one Peter posted? Or both? Should the one I posted the image of have nuts next to the insulators? I think I can see about 1 thread or so, no more, next to the insulator, so it would be hard to have a nut thread on securely. Should there be a nut on each post and something compresses to allow more thread engagement?

Gary

Gary, Look closely again. Aren't the white plastic insulators actually threaded nuts? They are on one of the senders I have from a 66.