original BB mounting bracket on left side bolt size

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grjammer

grjammer

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Hoping I can get some info.
Looking for the correct size of the bolts for the "extra" mounting bosses for the original 440 left side bracket. So much stuff in the threads on mine I cant be sure using my pitch gage.
I need to chase the bosses as they have been threaded but never used. I looked on a ton of posts and websites, so far no luck.
 
If you’re referring to boss where my chain is attached, that’s 3/8-16
IMG_9410.jpeg
 
I was looking for the bolt size for the front bosses that mount the bb engine mount plate to the front of block. I was able to finally scribe enough corrosion out to pitch gage it and chased them with the correct tap.
I ended up with about a 1/2 inch of grip length so stuck in some ARP 12 point bolts.

bracket.jpg
 
thats an awesome old school torq strap, reminds me of my first 440 cuda that i twisted the body in half with chains on it.
 
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