|
Author
|
Topic: 9" Questions
|
jkilroy
Senior Member Posts: 288
From:San Francisco, CA
Registered: Dec 99
|
posted 01-04-2000 03:09 PM
   
Ok, I am getting ready to re-furb the 9" in my 68 and I had a couple of questions. I want to do the Silver State Classic so think about 90 miles of around 130 mph as my motivation to redo the factory rear end.When looking at new carriers whats the diff between those with 3" and 3.25" bearings? Is bigger better? Alloy carriers cost the same as nodular iron, are they strong? How about housing ends? Large or small? Is bigger better there also? I used Currie for a housing years ago (85) and I loved the part but they are kinda pricey now, anyone have any experience with Moser or Strange? ------------------
Jay Kilroy
68' Fastback GT 390 IP: 205.229.142.209 |
georgeb
Moderator Posts: 793
From:Solomons, MD, USA
Registered: Jun 99
|
posted 01-04-2000 03:46 PM
The Ford 9" rear end is one of the strongest available. If it's in good condition 90 miles of 130 mph should be no big deal. The aluminum center sections will handle up to about 450 HP, perhaps a little higher, and of course nodular iron is stronger. The aluminum give about a 9 lb. weight savings.IP: 198.23.5.7 |
Moneymaker
Administrator Posts: 3668
From:Lyons, il, USA
Registered: May 99
|
posted 01-04-2000 03:51 PM
Jay, Moser is very reliable and they will build it your way. Cheap or expensive. Strange is the BEST product out there, but you get what you pay for.  Alex------------------
Alex Denysenko Co-Administrator and Moderator
IP: 152.163.205.63 |
Moneymaker
Administrator Posts: 3668
From:Lyons, il, USA
Registered: May 99
|
posted 01-04-2000 07:41 PM
Not to dissagree with George, but the Strange aluminum center sections will withstand considerably more than 450 HP. 99% of your Pro/Stock racers use aluminum third members from Strange or Mark Williams. I have an aluminum center section and spool both in MM. Alex------------------
Alex Denysenko Co-Administrator and Moderator
IP: 152.163.197.78 |
jkilroy
Senior Member Posts: 288
From:San Francisco, CA
Registered: Dec 99
|
posted 01-04-2000 08:43 PM
Thanks once again for the info. While surfing around on the web I noticed that Mark Williams doesn't show a nodular housing on their web site anymore, several types of alloy ones though. In order to save about 20 lbs. I think I will go with alloy unless I can find a really good deal on a nodular------------------
Jay Kilroy
68' Fastback GT 390 IP: 205.229.142.209 |
TomP
Moderator Posts: 628
From:Delta BC Canada
Registered: Dec 99
|
posted 01-05-2000 11:32 AM
I have a Strange aluminum carrier too..it takes a HiRiser and 4 speeds guff...no problem...i use 3.25 bearings to fit the 35 spline axles....BUT the bigger the bearing the thinner the cap. In the sort of application you have though i would ask Strange some questions....is aluminum's expansion(with heat) going to be a problem on an endurance application. 
Funny as it may seem i would run an 8.8 in this one...lighter and will take the power,and uses less HP to turn. The truck housing can have the ends cut off and use 8" or 9" ends and two 31 spline axles(truck 8.8's are 31 spl)from the same side of a car with the right dimensions (maybe left side 69 T-bird?)IP: 209.167.212.81 |
jkilroy
Senior Member Posts: 288
From:San Francisco, CA
Registered: Dec 99
|
posted 01-05-2000 11:59 AM
I had been thinking about the 8.8. I saw an add for one with large 9" housing ends and 31 spline axles. I could probably pick up a truck 8.8 really cheap in the scrap yard, with a 3.73 or something close and a posi for not much.------------------
Jay Kilroy
68' Fastback GT 390 IP: 205.229.142.209 |
TomP
Moderator Posts: 628
From:Delta BC Canada
Registered: Dec 99
|
posted 01-06-2000 04:16 PM
Exactly Jay...the 8.8's are all over the place and many are 3.73 and posi...way cheaper than sticking a 9" third member together...may seem funny in an older car,i never gave it any thought until i saw a guy with a 3400lb 5.0 Mustang run 9.21 at 150mph with a HUGE wheelie...on a 4 lug 31 spline 8.8" rear end...shortening it and fitting 8" or 9" housing ends which use bolt in axle retainers is wise.  IP: 209.167.212.194 |
TomP
Moderator Posts: 628
From:Delta BC Canada
Registered: Dec 99
|
posted 01-06-2000 04:25 PM
Oh and...if you go to use 9" axles two left side 68-70 T-bird should be about the proper width,8.8's use same length left and right for a centered pinion. Any racecar chassis place should be able to do this job easily. I have big bearing housing ends if you can't find any..i have problems getting folks to want to sacrifice a 9"housing for them . they are cut off on a lathe ,$40 a pair. You should be able to snag a whole 3.73 posi 8.8 for $200,look for a side swiped one that has the axle bent...may be CHEAP,and the housing will be corrected in the shortening.IP: 209.167.212.194 |
jkilroy
Senior Member Posts: 288
From:San Francisco, CA
Registered: Dec 99
|
posted 01-06-2000 04:33 PM
Tom, you are my kind of shoper, what an idea, get a rear end with a bent axle for next to nothing cause you are going to narrow it anyway. I am going to give that a go. Are certian truck 8.8's better than others? Like is an 8.8 out of a F250 any stronger or better than one out of a Mustang? Do any of the truck 8.8's come with discs on the back? I think expeditions have rear discs? They should be pretty damn big considering how heavy those things are. ------------------
Jay Kilroy
68' Fastback GT 390 IP: 205.229.142.217 |
Dave_C
Senior Member Posts: 63
From:Gadsden, Al
Registered: Aug 99
|
posted 01-06-2000 11:53 PM
The truck 8.8 rear uses the same housing end bolt pattern as the "new style" big bearing ford 9". The housing end is different, but the bolt pattern on the ends is the same. 2"X3.562". The car 8.8 housing ends have a 1.668"X3.076" bolt pattern. The late "new style" housing ends were found on 9" rears in big cars and trucks form 73-up.The good news: Late model Ford Explorers have rear disk brakes. You can snag some in a junkyard or Ford Motorsport sells a low buck kit that is the same parts found on the Explorer. M-2300-G has a suggested retail under $400. It consists of backing plates, calipers and rotors. It will bolt to any rear that has either the truck 8.8 or late new style 9" housing ends. Later, David Cole IP: 158.252.66.96 |
TomP
Moderator Posts: 628
From:Delta BC Canada
Registered: Dec 99
|
posted 01-07-2000 12:57 AM
yeah the Explorer rear is even about the right width too...just they have the dumb bearings-riding-on-axle deal like GM's but i guess it can be left alone.the full size truck rear is wider (vans wider yet)and offers the chance to fix this with bolt in axles,and sealed bearings,as well as adjust the width and pinion offset to where you need it.Dont know if an F250 is any stronger or if that is even necessary for what you are doing.IP: 209.167.212.141 |
Mustangsandmore.com Forums
UBBFriend: Email This Page to Someone! 
