Posts: 8
From: n.y
Registered: Jan 2000

posted 01-28-2000 09:33 PM            

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WHEN DID THEY START PUTTING 9" REARS AND STOP USING 8" REARS ON THE MUSTANG?

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Posts: 333
From: Delta BC Canada
Registered: Dec 99

posted 01-28-2000 11:29 PM            

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easy....9" first in 64 1/2 with 289-271HP used up to 1973 with 351

8" used 64 1/2 with 260-289 up to 1978

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Posts: 4154
From: Saco, Maine, USA
Registered: May 99

posted 01-29-2000 04:14 PM            

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First of all, why are you shouting? lol

The 9 inch is used in big engine/high performance applications. The 8 is used mostly for six cylinders and small eights.

Tom, I think you meant '68, right? {last year for the 289} Or did you mean '78 was the last year for the 8 inch?

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Cherishing the Past,
While Racing into the Future!

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Posts: 333
From: Delta BC Canada
Registered: Dec 99

posted 01-29-2000 06:13 PM            

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Steve...78 was the last year for the 8"...in Mustangs...an 80 V6 Pinto would be the last for an 8" in any NorthAmerican car.
the last 9" in cars would be the 80 Versailles ,the last 9" was in trucks and vans around 83 i think.

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Posts: 4154
From: Saco, Maine, USA
Registered: May 99

posted 01-29-2000 07:38 PM            

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Good info to know!

Thanks, Tom!

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SteveLaRiviere/Administrator

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Posts: 100
From: Tucson,AZ
Registered: Oct 99

posted 01-30-2000 12:09 AM         

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I have a 9" in my F100 and it came stock with the 240 I6. Is this because it's a truck?

68

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Posts: 4601
From: norfolk,va usa
Registered: May 99

posted 01-30-2000 02:15 AM            

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Also check in the Archives under rear ends/axles.We have a great deal of info stored there as well.
sam

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Posts: 333
From: Delta BC Canada
Registered: Dec 99

posted 01-30-2000 04:47 AM            

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60's 1/2 ton truck rear trivia:

the Dana 44 was used in 1/2 ton 4X4's
the 9" was used in any non 4X4 without posi
the Dana 60 was used with Posi (non 4X4)

all these are 5 on 5 1/2" wheel bolt pattern

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Posts: 62
From: Auburn, AL
Registered: Jan 2000

posted 01-30-2000 10:20 PM            

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Good info, Tom. I never realized car 9" rears stopped in 1980! Of course the Granada and Monarch still had the 9" option in 1980, while the Versailles had it standard (with discs).
The Granada/Monarch had the 9"/disc rearend as an option, I wonder how rare those cars are.. It was only availible with Hydroboost.

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-Charlie Ping
http://www.geocities.com/cping3

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Posts: 2818
From: Lyons, il, USA
Registered: May 99

posted 01-31-2000 12:58 AM            

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FYI gang, a few more 9 inch units that were identical to the 64.5-66 Mustangs. 63-65 Fairlane 289 HP, 64-65 Comet 289 HP and 63-65 Fairlane/Comet Wagons with V-8 and 3 speed overdrive transmissions. Alex

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Alex Denysenko Co-Administrator and Moderator

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Posts: 333
From: Delta BC Canada
Registered: Dec 99

posted 01-31-2000 04:35 AM            

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hmmm...i didn't know about the Comet wagon 289 stick one?...but then i dont think i have ever seen one anyways.

Granada's also had a drum brake 9" too,seems they are usually 2.47 gears. I have seen these with 200 straight 6's so it isnt for strength,351W Granadas often have the 8.5" rear (like an 8.8)...odd

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Posts: 899
From: Biddeford,Me.USA
Registered: May 99

posted 01-31-2000 08:49 PM         

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The 9" was available in 1/2 ton trucks to 1986, with ratios up to 3.50 to 1! Both 2WD and 4x4.

[This message has been edited by MLariviere (edited 01-31-2000).]

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Posts: 333
From: Delta BC Canada
Registered: Dec 99

posted 01-31-2000 08:53 PM            

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OK then 86 for trucks .....but i swear it is 80 for cars !!

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