antenna questions 1967 Coronet

[Billccm]

Hello:
The antenna on my 1967 Coronet is intermittent. I can tap the base of the antenna with a screwdriver handle and the signal will drop off. I remember back in the day these antennas failed for the same symptom.
A few questions:
1) MOPAR friend lent me his antenna tool, but about 1/32 too big in diameter (see picture). I assume eBay has a tool, but they look like the tool I already have and it doesn't work? Any advice on what tool I need?
2) I was going to replace this antenna with a solid mast 1970 Charger antenna, but was told per 1968 antenna is different and this won't work. Any recommendations on a single mast replacement for a 1967 Coronet?
I worked in a TV Repair shop in the late 1970s and we contracted radio service to a Buick/Pontiac used car lot. I remember we had Mopar 'universal' antennas that were claimed to replace 1960 to 1979, but not sure if I ever replaced one in a pre 68 Mopar. My memory of those days is fading anyhow.
Appreciate the help and advice. Thanks and have a nice day.

 

[diesel_lv]

The base on '68 and later antennas have a different angle and larger anchoring mechanism. The fender hole would need to be enlarged for one and it would lean at an angle. I took my '67 base and gutted it, then took apart a Ford Grenada antenna base and soldered in the screw in base from the Grenada to the Coronet base. Then I had a thin single post antenna that will unscrew for car washes.

 

[Jerry Hall]

I have a tool that I bought that works great. I also have several reproduction 67 antennas that I haven't ever used. It seems that they were hard to find some years back, so when I found one for sale, I bought it.

 

[Billccm]

I have a tool that I bought that works great. I also have several reproduction 67 antennas that I haven't ever used. It seems that they were hard to find some years back, so when I found one for sale, I bought it.

Thanks
If you've got part numbers I'd appreciate the information. If you want to unload your overstock of antenna by one send me a pm.

 

[440 4 speed]

Snap ring pliers work very well in taking the bezel nut off. I suggest spraying it with a penetrant, might help. A very small punch will also work, but most likely mar the notches.

 

[Jerry Hall]

1965-67 Mopar 8 Notch Antenna Nut Tool | eBay
This is similar to the tool I have.

 

[Ruby67]

Needle nose pliers with electrical tape on the ends has worked for me. Also two small slotted screw drivers crossed has worked like a spanner to remove the nut.
I also gutted my 67 antenna and matched the base to a newer mopar solid one from the scrap yard, don't recall the year or model.
Agree with Diesel, it's great to unscrew the mast, especially for my car cover.
In future I might want to try matching the 67 base to a power antenna.
Good luck with yours.

 

[Billccm]

Browsing the C Body forum someone recommended this tool for a 67 Fury antenna.

Amazon product ASIN B004KED7KW

 

[YY1]

I just gently tap a large, flat blade screwdriver with something heavy and make sure to go around from side to side so it doesn't bind.

 

[Billccm]

My game plan is to see what failed in the antenna first. I am thinking maybe the coax crimp is loose and that would be an easy fix. Appreciate all of the tips!

 

[RemCharger]

Antenna not grounding good enough?
Try twisting the guts of it from underneath the fender?