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 Post subject: 9" Ford Rear
 Post Posted: Tue Aug 30, 2011 11:47 am 
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Joined: Wed Apr 19, 2006 6:43 am
Posts: 1980
Location: Tell City, IN
Hey Guys I know hardly anything about a 9" Ford Rear end. Can someone school me?
I know there are different types of Pinion supports, bearing sizes...ect
Not sure what need to be looking at. I plan on buying new housing ends so I can reuse my GM brakes and Strange Axles. Just need a 3rd Member and back brace. thanks

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 Post subject: Re: 9" Ford Rear
 Post Posted: Tue Aug 30, 2011 1:49 pm 
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Joined: Tue Apr 18, 2006 6:38 am
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Location: Coming At Ya!
A correctly setup 12 bolt with a PRO GEAR will be as strong as a comparably setup 9"! And don't think you can run a "street gear" in a 9" and have it last! Been there, done that as I've broken those in a dragster with my pump gas 434! O:)

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 Post subject: Re: 9" Ford Rear
 Post Posted: Tue Aug 30, 2011 3:23 pm 
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Joined: Wed Apr 19, 2006 4:11 pm
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Location: Shepherdsville, KY
Ken he has a 10 bolt in that right now and I know that doesn't compare to a 9" Ford and I have my reservations that a 12 bolt is that close. If you are going to replace it I think you're on the right track going to the 9". Too many advantages with the 9" not to.

There are a couple of aftermarket 9" cases available. I use Strange partly because I get a little bit of a deal from them and partly because it's as good or better than any of the others. If you're buying new go with the 3.25" bore for the diff. bearings. This will give you more options for upgrades. Get the billet aluminum pinion support (trust me theses are stronger than the nodular iron) and a billet yoke. I would recommend a pro gear either a Richmond or a US gear. I would also set it up with the solid pinion bearing preload spacer or the shim style spacer. This will take just a little longer to set up initially but it will save time down the road.

Just give me a shout if you need any help or need me to get you any parts.

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 Post subject: Re: 9" Ford Rear
 Post Posted: Tue Aug 30, 2011 6:27 pm 
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Joined: Wed Apr 19, 2006 6:43 am
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Location: Tell City, IN
Would this be a good choice? PRF105

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_________________
6.11@110 Gas
1.3718 Sixty Foot with the rear wheels Gas

6.07@110 on Alcohol Injection with a 4-link 4-6-12
Best 60' 1.2537 Alcohol Injection 4-29-11
Thru the Mufflers!!


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 Profile  
 
 Post subject: Re: 9" Ford Rear
 Post Posted: Tue Aug 30, 2011 6:37 pm 
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Joined: Wed Apr 19, 2006 4:11 pm
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Location: Shepherdsville, KY
That has the "street" gear. I think the PRF115 with a "Pro" gear would be a better choice. Have you been using a street gear in the 10 bolt?

BTW Kenny Grimes has an ad in Ohio Valley's "things for sale section" looking for a 10 bolt 3.73 gear in case you're looking to get rid of yours.

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Chuck Woloch

Chuck's Automotive
Full line Computech dealer
chucksautomotive@yahoo.com
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