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PostPosted: Tue Feb 06, 2024 6:17 am 
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4 BBL ''Hyper-Pak''

Joined: Sat Jul 23, 2022 1:21 pm
Posts: 47
Car Model: Dart
I have a 1965 Dart with a Slant 6. I have found an 8 1/4 rear differential that I would like to put in and get rid of the stock (whinny)
7 1/4. Will the 8 1/4 fit? Do the drum break backing plates match up and bolt onto the 8 1/4? Any help and input would be appreciated. Thank you in advance.


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PostPosted: Tue Feb 06, 2024 6:23 am 
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SL6 Racer & Moderator
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Joined: Sat Oct 19, 2002 12:06 pm
Posts: 8387
Location: Silver Springs, Fl.
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cmann wrote:
I have a 1965 Dart with a Slant 6. I have found an 8 1/4 rear differential that I would like to put in and get rid of the stock (whinny)
7 1/4. Will the 8 1/4 fit?
Depends on what model vehicle the 8 1/4 was in
Quote:
Do the drum break backing plates match up and bolt onto the 8 1/4?
No the 7 1/4 rear barkes will not swap over.
Quote:
Any help and input would be appreciated. Thank you in advance.
The 8 1/4 will be large bolt pattern where the 7 1/4 was small bolt pattern.

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PostPosted: Tue Feb 06, 2024 6:34 am 
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4 BBL ''Hyper-Pak''

Joined: Sat Jul 23, 2022 1:21 pm
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Car Model: Dart
Thank you Charrlie.


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PostPosted: Tue Feb 06, 2024 8:31 am 
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Supercharged
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Joined: Sat Nov 27, 2004 8:03 pm
Posts: 8913
Location: IRWIN PA
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what vehicle was the 8 1/4" axle originally from? That will be the big factor here.

realistically only A or F/J/M Bodied donor cars axles will work, but with the flat rear wheel arch openings the F/J/M Axle will require a high positive offset / nonstock wheel.

I run a '69 Road Runner in my '64 Dart - it's is a bit too wide - I will be switching it to a '67 Satellite Rear axle someday.

Good luck,

Greg

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PostPosted: Sun Feb 11, 2024 9:55 am 
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SL6 Racer

Joined: Sun Nov 10, 2002 8:49 pm
Posts: 95
Location: Longview Washington
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I installed an 8 1/4 assembly in my 1972 Valiant. Not sure what it came out of. It's a bit wider.


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