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need help! 1969 gtx 440 alternator mounting

willys

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hi, I am mounting a alternator on a 69 gtx 440..ac car... the top bolt hole on the right side head has a plug instead of a threaded hole? any idea what this is like that? what's my options to mount a stock alternator? any input would be helpful.
Cheers!
 

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  • IMG_8569.HEIC.zip
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What you probably have is a bolt sheared off in the head.. Weld a nut to the broken bolt & unscrew it...
 
hi, I am mounting a alternator on a 69 gtx 440..ac car... the top bolt hole on the right side head has a plug instead of a threaded hole? any idea what this is like that? what's my options to mount a stock alternator? any input would be helpful.
Cheers!
If the hole is deep enough, you can tap it for a thread repair insert (forgot what it is called).
 
That is weird, definitely looks like a plug. Maybe try to remove it and see what you have.
You could swap heads as suggested, obviously first check that it not also plugged.
 
Yeah looks like some kind of plug, even has a number stamped if you zoom in on it. If you're lucky the plug threaded in there. I'd remove the paint around the hole to get a better look at what you are working with.

Worst case, as others have said, see if you can swap the heads around.
 
hi, I am mounting a alternator on a 69 gtx 440..ac car... the top bolt hole on the right side head has a plug instead of a threaded hole? any idea what this is like that? what's my options to mount a stock alternator? any input would be helpful.
Cheers!
Doesn’t the a/c cars have a head bracket and then the alternator mounts to that I thought?
 
hi, I am mounting a alternator on a 69 gtx 440..ac car... the top bolt hole on the right side head has a plug instead of a threaded hole? any idea what this is like that? what's my options to mount a stock alternator? any input would be helpful.
Cheers!
thx for the help... I have come to the conclusion that I need to switch my heads around.... gonna be great fun on my every nut and bolt....all painted.. restoration
 
I can't open the Pic file, but would one of these work. Came off a 70s 400 truck
20241115_132607.jpg
 
I can't open the Pic file, but would one of these work. Came off a 70s 400 truck
View attachment 1758253

Here they are not in a ZIP file.

IMG_8569 Large.png
IMG_8569 Large.png


From all pics I have seen, weather it's an AC car or not, ya need that top threaded hole to mount the alternator. Never seen a plug put in one before. Whoever did the heads has some 'splainin' to do.
 
Here they are not in a ZIP file.

View attachment 1758254View attachment 1758259

From all pics I have seen, weather it's an AC car or not, ya need that top threaded hole to mount the alternator. Never seen a plug put in one before. Whoever did the heads has some 'splainin' to do.
Thanks Don, it looks like one of those small dish plugs. I'd try tapping on the side with a small punch and tilting it , and pry out..
20241115_141240.jpg
20241115_141234.jpg
 
no has a bracket off water pump and top pivot bolt goes onto the head ...I think I am going to switch my heads around... ugh!
I remember that on non A/C cars but one head had an adapter I thought with A/C
 
hi, I am mounting a alternator on a 69 gtx 440..ac car... the top bolt hole on the right side head has a plug instead of a threaded hole? any idea what this is like that? what's my options to mount a stock alternator? any input would be helpful.
Cheers!
Welcome aboard from IA
 
That bracket is for B blocks only, it won't fit on an RB block. The bolt is lines up to thread into the cylinder head on an RB block.

The alternator bracket is the same for both blocks on AC, on non AC the alt bracket has two holes for the alt bolt, B or RB block.
 
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