Rear axle and tire setup for high HP.

[J-MAN]

What kind of setup are the guys using that holds up to high horsepower and torque. Interested in those running low 11's or less. Pics would be great!
Thanks.

[Mercguy04]

I am sorry I don't have pictures, But I purchased a 2010 CVPI Hub to hub rear.
As you can imagine it is quite a bit stronger than a standard set up. Ithe one I got had
12000 miles on it so the only thing I needed to do was buy a set of 4:10 gears
It is a 31 spline set up. found it on ebay 650 shipped. That is JMHO for what it is worth. Also I got this from Randy ring and Pionion:
Vehicle information provided:
Year: 04
Model: MERCURY MARAUDER


This quote was prepared for you by:
Tate Hudson
+1(425)347-1188
ext. 5573
Please call me directly at the above extension to finalize this order.

Quoted Parts List:
Qty Part # Description Price Ext
------------------------------------------------------------------------
1 YDGF8.8-31-1 8.8" FORD 31spl DURA $302.96 $302.96
2 YA F880039 8.8" FORD 34-3/8" 31 $178.86 $357.72
2 YESAXLE Y.E.S. AXLE - Yukon $29.99 $59.98
2 AK 1563 R1563TAV AXLE BRG & $12.45 $24.90
1 SVOM19546A POSITRACTION ADDITIVE $4.94 $4.94
1 CK F8.8 8.8" FORD CARRIER BR $53.60 $53.60
------------------------------------------------------------------------
Subtotal: $804.10
Shipping TBD

It sound OK to me. Ir is an option to purchase new. Maybe it worth the estra
150 for New parts.
Hope this helps. Good luck with you project,
Russell

[fastblackmerc]

A 31-spline carrier & axles are a MUST!

[RR|Suki]

A 31-spline carrier & axles are a MUST!

My stock rear is still going strong

[Motorhead350]

31 spline axels and a detroit true track will set you up just fine. Anything above 31 spline gears require a spool... I think. You won't want that for street use.

[TooManyFords]

This will work for a long, long time...

http://www.cvmusclecars.com/picture.php?albumid=39&pictureid=1027

[J-MAN]

This will work for a long, long time...

http://www.cvmusclecars.com/picture.php?albumid=39&pictureid=1027


Uhhhh.........Very nice John, but my guess is that there must be a setup between 31 spline and your jillion HP rig. Something that would handle 700 rwhp and allow for a 315 to 335 tire. Very nice!

[TooManyFords]

Just keep replacing the tires and don't change anything until you break something. So many people on here think they need to replace this or upgrade that when nothing is wrong with the factory parts.

Here are my top "waste of money" upgrades:

Replacement control arms.

Replacement watts links.

Shiny rear end covers (I have one for sale if anyone wants one)

CAI tubes (ditto on this too)

[GreekGod]

Not an easy problem to solve... I completely disassembled my MM rear housing, and had a 31 spline Detroit Locker installed, with 4.11 gears. I was told the axle tubes are too thin for big HP use, and Paul's High Performance in Jackson MI replaces the whole shebang with a (Ford) Sterling 10.5" axle link>

http://en.wikipedia.org/wiki/Sterling_10.5_axle .

(The Sterling is Ford's replacement for a Dana 60 & 70, 1985<)

Ideally, someone would make a bolt-in Ford 9", but it probably will never happen. I was told that the Watts link is in the way of the 9", and a problem. A Detroit Locker for racing, or Detroit True Track for street/road racing are the best, short of a spool (for racing only). The only "problem" with the "Detroit" two, as far as I can tell, is that they are only sized up to 31 splines, and 35 or more is highly desirable/preferred (same $ price as 31's).

[TooManyFords]

The Detroit Locker does indeed come in a 35 spline option.

[J-MAN]

Thanks guys, interesting stuff.

[GreekGod]

The Detroit Locker does indeed come in a 35 spline option.

I thought it did, but neither Strange Eng., National Drivetrain, Summit, 4 Wheel Parts, Moser, Currie, Randy's Ring & Pinion, or Jegs list anything other than 28 & 31 spline.

----------------------------

[MOTOWN]

I thought it did, but neither Strange Eng., National Drivetrain, Summit, 4 Wheel Parts, Moser, Currie, Randy's Ring & Pinion, or Jegs list anything other than 28 & 31 spline.

----------------------------
Your not going to find a 35 spline locker at jegs, or summit! its availible thru Lenco which is where i purchased mines for my buick its a billet stainless locker, years back when i got mine it was $799 prolly around 1k now.

[GreekGod]

Your not going to find a 35 spline locker at jegs, or summit! its availible thru Lenco which is where i purchased mines for my buick its a billet stainless locker, years back when i got mine it was $799 prolly around 1k now.

The only locker Lenco lists is for a 9"

--------------------

[TooManyFords]

Google is your friend.

http://broncograveyard.com/bronco/i-22231-ford-9-inch-detroit-locker-35-spline.html

and by price comparison shopping:

http://www.google.com/search?sourceid=chrome&ie=UTF-8&q=detroit+locker+35+spline+for d+9+inch#q=detroit+locker+35+s pline+ford+9+inch&hl=en&newwindow=1&safe=off&prmd=ivns&source=lnms&tbm=shop&ei=E2c6TuifLqOlsQLO4ZEs&sa=X&oi=mode_link&ct=mode&cd=5&ved=0CDEQ_AUoBA&bav=on.2,or.r_gc.r_pw.r_cp.&fp=4dad701277d0d2b5&biw=1235&bih=855

[TooManyFords]

Your not going to find a 35 spline locker at jegs, or summit! its availible thru Lenco which is where i purchased mines for my buick its a billet stainless locker, years back when i got mine it was $799 prolly around 1k now.

From Randy's website:
http://www.ringpinion.com/ProductDetails.aspx?ProdID=218 2&Product=DET187S-160A&Brand=Detroit_Locker

[GreekGod]

Google is your friend.

http://broncograveyard.com/bronco/i-22231-ford-9-inch-detroit-locker-35-spline.html

and by price comparison shopping:

http://www.google.com/search?sourceid=chrome&ie=UTF-8&q=detroit+locker+35+spline+for d+9+inch#q=detroit+locker+35+s pline+ford+9+inch&hl=en&newwindow=1&safe=off&prmd=ivns&source=lnms&tbm=shop&ei=E2c6TuifLqOlsQLO4ZEs&sa=X&oi=mode_link&ct=mode&cd=5&ved=0CDEQ_AUoBA&bav=on.2,or.r_gc.r_pw.r_cp.&fp=4dad701277d0d2b5&biw=1235&bih=855

All 9"...no 8.8"

-----------

[TooManyFords]

Ideally, someone would make a bolt-in Ford 9", but it probably will never happen. I was told that the Watts link is in the way of the 9", and a problem. A Detroit Locker for racing, or Detroit True Track for street/road racing are the best, short of a spool (for racing only). The only "problem" with the "Detroit" two, as far as I can tell, is that they are only sized up to 31 splines, and 35 or more is highly desirable/preferred (same $ price as 31's).

This part reads like you're still talking about the 9 inch.



All 9"...no 8.8"

-----------

For the 8.8, you are correct.

[MOTOWN]

From Randy's website:
http://www.ringpinion.com/ProductDetails.aspx?ProdID=218 2&Product=DET187S-160A&Brand=Detroit_Locker

I was talking about the Lenco billet ss locker, not the cast unit which is a lot cheaper

[MOTOWN]

heres a linky http://www.markwilliams.com/detail.aspx?ID=114

[GreekGod]

heres a linky http://www.markwilliams.com/detail.aspx?ID=114

9" only...our cars are 8.8" Salisbury design. I suspect the reason no one makes a 33 or 35 spline locker for the 8.8" is because the assembly is unreliable for the level of horsepower that requires axle shafts larger than 31 spline. Probably why Paul's High Performance installs the 10.5" Sterling assemblies for an upgrade to the 8.8"

The Ford 8.8" is a copy of the "GM 12 Bolt". The Ford/Sterling 10.5" is a replacement for a DANA 60 or 70 Series.

---------------------

[MOTOWN]

9" only...our cars are 8.8" Salisbury design. I suspect the reason no one makes a 33 or 35 spline locker for the 8.8" is because the assembly is unreliable for the level of horsepower that requires axle shafts larger than 31 spline. Probably why Paul's High Performance installs the 10.5" Sterling assemblies for an upgrade to the 8.8"

The Ford 8.8" is a copy of the "GM 12 Bolt". The Ford/Sterling 10.5" is a replacement for a DANA 60 or 70 Series.

---------------------
I thought you were looking for a 9" locker, 8.8 axles are availible in 33spline ,but i think it requires c-clip eliminator kit

[GreekGod]

What kind of setup are the guys using that holds up to high horsepower and torque. Interested in those running low 11's or less. Pics would be great!
Thanks.

The #1 post in this thread asked about "Rear axle and tire setup for high HP"...I know of no one that makes a 33 or 35 spline locker for an 8.8"...there may be 33 or 35 spline axle shafts available for use with a spool, which is not a good idea on the street...and meant for racing only.

1/4 mile Low 11's or less with our #4400+ race weight calls for 35 spline (1 1/2") axle shafts, and probably exceeds the safety & reliability of the 8.8" design. Might be time to consider a custom 9" installation, or a DANA 60, or 10.5" Ford-Sterling, and slicks. I hope this clears things up.

--------------------

[MOTOWN]

The #1 post in this thread asked about "Rear axle and tire setup for high HP"...I know of no one that makes a 33 or 35 spline locker for an 8.8"...there may be 33 or 35 spline axle shafts available for use with a spool, which is not a good idea on the street...and meant for racing only.

1/4 mile Low 11's or less with our #4400+ race weight calls for 35 spline (1 1/2") axle shafts, and probably exceeds the safety & reliability of the 8.8" design. Might be time to consider a custom 9" installation, or a DANA 60, or 10.5" Ford-Sterling, and slicks. I hope this clears things up.

--------------------


i totaly disagree with you on this, a 10 second marauder does not need a 9" ford, or 35 spline axles, hell yeah it would be great to buy a bolt in set up like that, but its severe overkill!

how many people can you honestly name that have broken a properly built 8.8??
some are running 11s with 28 spline axles, and stock traclocs!

the 8.8 is far stronger than you give it credit for, if it wasnt we would all be fitting 9" under our cars like eaton swaps!

[LANDY]

I'm just gonna say this, I don't know how low 11's called 35 spline setup but I made several mid to high 11 sec pass on stock axles and stock motor and I know more the one person running 10's on the oem 31 spline that came on the later models CV's

[MOTOWN]

Just keep replacing the tires and don't change anything until you break something. So many people on here think they need to replace this or upgrade that when nothing is wrong with the factory parts.

Here are my top "waste of money" upgrades:

Replacement control arms.

Replacement watts links.

Shiny rear end covers (I have one for sale if anyone wants one)

CAI tubes (ditto on this too)

How did i miss this?? you have got to kidding me! this is one of the best suspension mods there is for the MARAUDER!

Havent done the watts link yet, but its in the works!:cool:

[GreekGod]

I believe NHRA rules require cars with slicks to have aftermarket axle shafts. I think cars faster than 11.50 must have cages. These rules are written in blood. Your results may vary, but just because you can do something, doesn't mean you should. Martin US 131 used to be an NHRA track. They allowed a driver with a big block Vega, who was killed in a crash. If memory serves, he didn't even have a cage.

-------------

[John Nero]

i totaly disagree with you on this, a 10 second marauder does not need a 9" ford, or 35 spline axles, hell yeah it would be great to buy a bolt in set up like that, but its severe overkill!

how many people can you honestly name that have broken a properly built 8.8??
some are running 11s with 28 spline axles, and stock traclocs!

the 8.8 is far stronger than you give it credit for, if it wasnt we would all be fitting 9" under our cars like eaton swaps!

snapped a axel this past march drag racing at moroso

[MOTOWN]

snapped a axel this past march drag racing at moroso

under what circumstances? what spline?

[Taemian]

I'm just gonna say this, I don't know how low 11's called 35 spline setup but I made several mid to high 11 sec pass on stock axles and stock motor and I know more the one person running 10's on the oem 31 spline that came on the later models CV's

What years of CV have the 31 spline? And ours has the 28 spline, right?

[MOTOWN]

What years of CV have the 31 spline? And ours has the 28 spline, right?

05 or newer has 31 splines, and yes all 03/04 MARAUDERS came from the factory with 28 spline axles

[Triple Threat]

On purple Marauder with over 82,000 miles and over 150 runs in the 1/4 mile at 11.3 best ET I have not changed anything in the rear end and suspension except 4:56 gears. Last night in 85+ degrees and high humidity car ran 11.67. Keep your launch soft at 2500 RPMs or less; it put less strain in a stock rear end on a heavy car.

[GreekGod]

Without a doubt, the weakest link in the Panther chassis is the 8.8" rear axle. Why Ford used both 28 & 31 spline shafts until '05 is strange, since it would have been more practical to have one size that fits all. But practicality in design and service repair is not a priority to engineers & bean counters.

Since Ford finally decided they should have 31's in our 2 ton+ chassis, with a mere 240 hp, driving on 28 spline shafts is questionable. Drag racing on 28 spline shafts, while doable, going under 15 seconds is questionable, and going under 14 seconds, slicks or not, is foolhardy.

------------------

[RR|Suki]

Without a doubt, the weakest link in the Panther chassis is the 8.8" rear axle. Why Ford used both 28 & 31 spline shafts until '05 is strange, since it would have been more practical to have one size that fits all. But practicality in design and service repair is not a priority to engineers & bean counters.

Since Ford finally decided they should have 31's in our 2 ton+ chassis, with a mere 240 hp, driving on 28 spline shafts is questionable. Drag racing on 28 spline shafts, while doable, going under 15 seconds is questionable, and going under 14 seconds, slicks or not, is foolhardy.

------------------

I've been going 11s for 4 years on the stock axles... and the car is my DD

[GreekGod]

I've been going 11s for 4 years on the stock axles... and the car is my DD

I will pray for you!

My PI went 11.39 with 28 splines before I bought it. I am installing a 31 spline Detroit Locker before I attempt driving a 1/4 mile on slicks with it.

---

[J-MAN]

Thanks for all the good info!

[GreekGod]

This was done with my 1968 F100, three speed manual trans, 300-I6 engine (115hp?), 28 spline Detroit locker, 11-15 tires, and I think I had a 3.50 ratio (9"). I suspect more modern shafts are stronger, but any shaft has it's torque capacity "rated" limits.

http://www.mercurymarauder.net/forums/../gallery/data/500/medium/Axle_Shaft_Stub_003.jpg