General Automotive Technical Discussion

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9 inch rear tag info

Printed From: The Ford Torino Page
Category: Model Specific Forum
Forum Name: General Automotive Technical Discussion
Forum Description: Technical Automotive discussion of anything not specific to mid-size Ford/Merc
URL: https://forum.grantorinosport.org/forum_posts.asp?TID=4079
Printed Date: 23-April-2024 at 3:47AM
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Topic: 9 inch rear tag info

Posted By: Regul8r
Subject: 9 inch rear tag info
Date Posted: 04-August-2010 at 10:58AM

pulled the tags off both 9 inch rear ends I have in the garage.

the 72 Montego tag reads

WEB-AD 2BD

2.75 9 812A

the 77 Ranchero GT500 tag reads

WEB-BH 7JB

2.50 9 810A

does this mean the Montego has a 2.75 ratio and the 77 Ranchero has a 2.50?

Were either of these limited slip or posi? Doubt it with those gears!!!

If I put the AOD in the Torino with the 77 rear end with 2.50 and big 275/60/15 on the back I would be at idle running the highway!!! Lean out the low end of the carb and get 20 PLUS MPG with that set up! But it will take a mile to get up to speed!lol

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Carl Corey (Moderator/Event Coordinator) Contact ANYTIME!
1976 Ford Elite "Lola Mae"
97 Suzuki Intruder 1400
US Army Retired

Replies:

Posted By: iangj
Date Posted: 04-August-2010 at 3:44PM

Yes on your first question.

To be LSD it would read

2L75 & 2L50 respectively.

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Ian Glyn-Jones
Fonthill, Ontario, Canada
Wish I had My Baby Back

Montego GT Registry
Forum; http://mmgt.forumchitchat.com/

Posted By: Regul8r
Date Posted: 04-August-2010 at 4:02PM

well that BLOWS!

these huge cars with all that weight and they have a stupidly high ratio!

Guess they needed that with the 3 speed trans of the day in order to run down the road at a fairly decent RPM while cruising.

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Carl Corey (Moderator/Event Coordinator) Contact ANYTIME!
1976 Ford Elite "Lola Mae"
97 Suzuki Intruder 1400
US Army Retired

Posted By: Rockatansky
Date Posted: 06-August-2010 at 4:17PM

you could build the AOD into a 4R70W and have a decent ratio off the line, and the advantage of OD down the road

E4OD planets work in a C6 the same way, but no OD