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Re: Ordering a Ford 9 inch [Re: pittsburghracer] #2774328
05/13/20 07:51 PM
05/13/20 07:51 PM
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Originally Posted by pittsburghracer
Just remember a cheaply built 9 inch is no better than an 8 3/4.


Exactly. And a well-built 9" center section that will handle a lot of horsepower could cost more than a Dana.
Trying not to hijack the thread, but years ago I bought a complete Dana from Strange with a Detroit locker (which I really like on the street) but I made the mistake of not ordering 5/8 studs, and it has Mopar style ends, which limit the brake options. When i ordered that Dana the motor in the car had roughly 600 hp.
With a touch under 900 hp, I'm going to order a complete new Dana with spool and 5/8 studs. The car never sees wet weather.
Looking for suggestions on which ends to go with, and a good disc brake kit w. emergency brakes.



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Re: Ordering a Ford 9 inch [Re: jughed] #2774333
05/13/20 08:12 PM
05/13/20 08:12 PM
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I've seen plenty of 9" Fords $hit the bed on the starting line at dragstrip. In surprisingly light cars ,too!


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Re: Ordering a Ford 9 inch [Re: jughed] #2774334
05/13/20 08:23 PM
05/13/20 08:23 PM
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Did anybody else have the feeling that this would turn into a Dana-VS-9"-VS-8 3/4 rear end argument whistling

Gus beer

Might as well go all the way with a Rockwell

rockwell.jpgrockwell pig.jpg
Last edited by fourgearsavoy; 05/13/20 08:24 PM.

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Re: Ordering a Ford 9 inch [Re: pittsburghracer] #2774335
05/13/20 08:23 PM
05/13/20 08:23 PM
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MI
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Originally Posted by pittsburghracer
Just remember a cheaply built 9 inch is no better than an 8 3/4.


As long as the pinion angles right it’ll out 60’ an 8-3/4 any day. stirthepot

Last edited by 68shifter; 05/13/20 08:24 PM.

68' Barracuda (4 speed) 64' Savoy (4 speed) 65' Satellite (girl tranny)
Re: Ordering a Ford 9 inch [Re: jughed] #2774342
05/13/20 08:44 PM
05/13/20 08:44 PM
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Originally Posted by jughed
Originally Posted by pittsburghracer
Just remember a cheaply built 9 inch is no better than an 8 3/4.


Exactly. And a well-built 9" center section that will handle a lot of horsepower could cost more than a Dana.
Trying not to hijack the thread, but years ago I bought a complete Dana from Strange with a Detroit locker (which I really like on the street) but I made the mistake of not ordering 5/8 studs, and it has Mopar style ends, which limit the brake options. When i ordered that Dana the motor in the car had roughly 600 hp.
With a touch under 900 hp, I'm going to order a complete new Dana with spool and 5/8 studs. The car never sees wet weather.
Looking for suggestions on which ends to go with, and a good disc brake kit w. emergency brakes.


Talk to Doctor Diff. He can set you up with what you want. He is a Strange dealer so he can order the config that you want and add the correct disc brake kit and have it drop shipped to you. If you have 15 inch wheels in back then you'll probably be limited to an 11 inch rotor but it depends on how much backspacing there is on the wheel.

Re: Ordering a Ford 9 inch [Re: 68shifter] #2774346
05/13/20 08:54 PM
05/13/20 08:54 PM
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Fulton County, PA
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Originally Posted by 68shifter
Originally Posted by pittsburghracer
Just remember a cheaply built 9 inch is no better than an 8 3/4.


As long as the pinion angles right it’ll out 60’ an 8-3/4 any day. stirthepot


And here we go.


If the results don't match the theory, change the theory.
Re: Ordering a Ford 9 inch [Re: GY3] #2774347
05/13/20 08:58 PM
05/13/20 08:58 PM
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Originally Posted by GY3
I've seen plenty of 9" Fords $hit the bed on the starting line at dragstrip. In surprisingly light cars ,too!


Yeah. Even one of those can be screwed up by some hilljack who thinks he can spend $20, slap it together and send it.

Quote
Exactly. And a well-built 9" center section that will handle a lot of horsepower could cost more than a Dana.


And?

Last edited by CMcAllister; 05/13/20 09:04 PM.

If the results don't match the theory, change the theory.
Re: Ordering a Ford 9 inch [Re: AndyF] #2774350
05/13/20 09:04 PM
05/13/20 09:04 PM
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Pattison Texas
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Originally Posted by AndyF


The S trac in my S60 works great !!!


1968 Charger COLD A/C Hilborn EFI
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2020 T/A 392 Stock 11.79 @ 114.5

Re: Ordering a Ford 9 inch [Re: CSK] #2774357
05/13/20 10:05 PM
05/13/20 10:05 PM
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Originally Posted by csk
Originally Posted by AndyF


The S trac in my S60 works great !!!

How much do the S Tracs weigh? work
A lot of people don't know how much more power a Ford type 9 inch rear end takes to make it rotate compared to any other popular rear end made in American productions cars work shruggy
Every race ready Ford type rear end that I've seen or heard from racers who priced them against a Dana 60 cost any where from $500 to $1500 depending on which race parts where used on the 9 inch rear end, the better stronger parts cost more money shruggy


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Ordering a Ford 9 inch [Re: Cab_Burge] #2774367
05/13/20 11:58 PM
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One of the common failure modes of the 9' is when they blow the pinion retainer out the front. So I ordered the housing from Moser that has10 bolts instead of 5 holding the pinion in. It's probably overkill, but for an extra $100 or so, why not?


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Re: Ordering a Ford 9 inch [Re: als499] #2774390
05/14/20 05:22 AM
05/14/20 05:22 AM
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St. Paul , Mn.
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I did a Strange iron case with the 3.25 bore and spool + 35 spline street axles in my Dart which is about 50 / 50 street car , race car.
And am doing a 3.062 bore Strange iron case with w True Trac and 31 spline axles for my Volare wagon , which is just a cruiser.
I have housings laying around and which ends depend on which brakes I go with.
But either of the " large Ford " ends offer a ton of options for brakes.
The only issue I have run into is shock location interfering with the back brace on the housings...........I relocated the shocks on the Dart and am still up in the air about how to address it on the Volare.

Re: Ordering a Ford 9 inch [Re: AndyF] #2774415
05/14/20 08:14 AM
05/14/20 08:14 AM
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Next time at the track, go look at the rears in the 3-4 second (1/8 mile) cars. Count the number of Dana rears you see there. Look at the rears these guys are running, they are all the same type.

BTW, you won't need a pencil and paper to count the number. You actually won't need anything.

On the power rob, I really wish there was a true scientific test on a 9 inch style to see the loss. That truly would be interesting, but I doubt it would change anybody's mind anyway.

Years ago I got some great advice at the race track, "if everybody is doing it, its probably a pretty good idea"

Have a great day, I hope we get to race this year.

Re: Ordering a Ford 9 inch [Re: SportF] #2774484
05/14/20 12:07 PM
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Originally Posted by SportF
Next time at the track, go look at the rears in the 3-4 second (1/8 mile) cars. Count the number of Dana rears you see there. Look at the rears these guys are running, they are all the same type.

BTW, you won't need a pencil and paper to count the number. You actually won't need anything.

On the power rob, I really wish there was a true scientific test on a 9 inch style to see the loss. That truly would be interesting, but I doubt it would change anybody's mind anyway.

Years ago I got some great advice at the race track, "if everybody is doing it, its probably a pretty good idea"

Have a great day, I hope we get to race this year.


iagree

Re: Ordering a Ford 9 inch [Re: justinp61] #2774491
05/14/20 12:32 PM
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How can you outrun the best if your using the same parts as them work
Been there, done that and then learned how to become better work devil
As far as how to measure friction loss a good inch lb. torque wrench is your freind scope
Ceramic bearings will make any part rotate with less friction also scope shruggy

Last edited by Cab_Burge; 05/14/20 12:34 PM.

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Ordering a Ford 9 inch [Re: SportF] #2774494
05/14/20 12:42 PM
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Originally Posted by SportF
Next time at the track, go look at the rears in the 3-4 second (1/8 mile) cars. Count the number of Dana rears you see there. Look at the rears these guys are running, they are all the same type....



3-4 sec 1/8 mile cars?? ...sheesh...Apples and oranges...Those cars use center sections that ALONE may cost double what an entire Dana would cost. They want the 9" advantage of quickly replacing broken parts, or to dial in their cars. I can't blame them, they ARE going to break rearend parts.

Totally different than a mild street car application. And I totally understand Andy's decision to run a 9". Far more parts and options are available to him.



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Re: Ordering a Ford 9 inch [Re: jughed] #2774499
05/14/20 01:11 PM
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Regarding brand loyaly, if it is all aftermarket, who cares? My 9" doesen't have one single part that was ever in a ford factory.


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Re: Ordering a Ford 9 inch [Re: Hemi_Joel] #2774506
05/14/20 01:22 PM
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Originally Posted by Hemi_Joel
Regarding brand loyaly, if it is all aftermarket, who cares? My 9" doesen't have one single part that was ever in a ford factory.
iagree None of the good race 9 inch rear ends have any Ford made parts in them, many part sellers have mad a lot of money off of these type rear end parts. A good Dana 60 will outlive and out perform the majority of these type rear ends twocents scope
Money, money, money , it is your choice on what parts you buy and use up scope


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Re: Ordering a Ford 9 inch [Re: 68shifter] #2774510
05/14/20 01:28 PM
05/14/20 01:28 PM
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Originally Posted by 68shifter
Originally Posted by pittsburghracer
Just remember a cheaply built 9 inch is no better than an 8 3/4.


As long as the pinion angles right it’ll out 60’ an 8-3/4 any day. stirthepot


And why would that be? It’s got frictional loss as a disadvantage...

Re: Ordering a Ford 9 inch [Re: Pacnorthcuda] #2774517
05/14/20 01:53 PM
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You want the lowest horsepower eater? Get a 12 bolt. Better yet, get the 12 bolt center to go into a 9" housing. Danas and 9"s aren't that far apart.

Last edited by CMcAllister; 05/14/20 01:55 PM.

If the results don't match the theory, change the theory.
Re: Ordering a Ford 9 inch [Re: fourgearsavoy] #2774524
05/14/20 02:15 PM
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Did anybody else have the feeling that this would turn into a Dana-VS-9"-VS-8 3/4 rear end argument whistling





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