When to get 31 spline axles and diff.

StuTheMusicEngineer · March 6th, 2007, 10:27 PM

at what point (HP wise) is it necessary to upgrade to 31 spline axles and diff.? I plan on having about 400 to the wheels....would I need to upgrade or could I get away with stockers...thanks

drgnracin72 · March 6th, 2007, 10:29 PM

well are you running slicks or drag radials at the track? if so then upgrade. if not, your street tires will never hook enough to break axles

StuTheMusicEngineer · March 6th, 2007, 11:18 PM

yes....drag radials, probably the Nittos or BFGs (315s)

orangeRcode · March 7th, 2007, 12:28 AM

I have seen near stock Machs snap axles on drag radials. They were probably around 280 rwhp. The stock 28 spline axles are crap and will snap if enough force (torque) is applied.

SWEET2KSTANG · March 7th, 2007, 04:40 AM

i havent went to 31's yet. i ran slicks at the last part of the year without a problem. but the 31 spline set up is about to be ordered. it is alway a good idea to get a 31 spline set up when abuse is in the cars future.

ChrisJ · March 7th, 2007, 08:30 AM

I say as soon as you can swap up if you are going to do any serious drag racing...

I have saw them snap at 280rwhp and I have saw them snap at 450rwhp...Its all up to how much abuse you give it...

neckbonekat · March 8th, 2007, 11:04 AM

Here's one on ebay. You can probably get a better price with the make an offer option.

Here's another even cheaper with the best offer option.

ChrisJ · March 8th, 2007, 11:08 AM

I would not give that for a trak-loc...For that price I would go ahead and get an eaton diff...

neckbonekat · March 8th, 2007, 11:22 AM

Originally Posted by ChrisJ

I would not give that for a trak-loc...For that price I would go ahead and get an eaton diff...

In that case:
http://cgi.ebay.com/ebaymotors/Eaton...QQcmdZViewItem

March 6th, 2007, 10:27 PM	#1
StuTheMusicEngineer Regular Join Date: Oct 2006 Location: Queens, New York (from NC) Posts: 187	When to get 31 spline axles and diff. at what point (HP wise) is it necessary to upgrade to 31 spline axles and diff.? I plan on having about 400 to the wheels....would I need to upgrade or could I get away with stockers...thanks __________________ 2004 GT....4.10s, SCT X Cal2, BBK Lts, BBK O/R Xpipe, Flowmaster catback with Super 40 mufflers, BBK 75mm TB & Plenum, K&N Filter w/no silencer, Steeda UDP, Steeda TriAx, and Steeda G-Trac stages 1, 2, 3, and 4, blower is on the way!!!

March 6th, 2007, 11:18 PM	#3
StuTheMusicEngineer Regular Join Date: Oct 2006 Location: Queens, New York (from NC) Posts: 187	yes....drag radials, probably the Nittos or BFGs (315s) __________________ 2004 GT....4.10s, SCT X Cal2, BBK Lts, BBK O/R Xpipe, Flowmaster catback with Super 40 mufflers, BBK 75mm TB & Plenum, K&N Filter w/no silencer, Steeda UDP, Steeda TriAx, and Steeda G-Trac stages 1, 2, 3, and 4, blower is on the way!!!

March 7th, 2007, 12:28 AM	#4
orangeRcode Hardcore Enthusiast 12.37@110.89 Join Date: May 2006 Location: Mustang/Yukon, OK Posts: 1,781	I have seen near stock Machs snap axles on drag radials. They were probably around 280 rwhp. The stock 28 spline axles are crap and will snap if enough force (torque) is applied. __________________ http://www.moddedmustangs.com/forums/image-apic687.jpg

March 7th, 2007, 04:40 AM	#5
SWEET2KSTANG MM Fanatic 2000 mustang gt 12.01@114.69 Join Date: Oct 2006 Location: N.W. AR Posts: 4,011	i havent went to 31's yet. i ran slicks at the last part of the year without a problem. but the 31 spline set up is about to be ordered. it is alway a good idea to get a 31 spline set up when abuse is in the cars future. __________________ stock long block, bolt ons, slicks, and a little squeeze 1/4 E.T. 12.06@114.69 Only two defining forces have ever offered to die for you: 1. Jesus Christ 2. The American G. I. One died for your soul, the other for your freedom.

March 7th, 2007, 08:30 AM	#6
ChrisJ The Cable Guy... 2002 Mustang GT SLOW Join Date: Jun 2006 Location: Shepherdsville, Kentucky Posts: 15,372	I say as soon as you can swap up if you are going to do any serious drag racing... I have saw them snap at 280rwhp and I have saw them snap at 450rwhp...Its all up to how much abuse you give it... __________________ My Junk www.myspace.com/cjobe

March 8th, 2007, 11:04 AM	#7
neckbonekat I Post Entirely Way Too Much Join Date: Dec 2006 Location: Upstate NY Posts: 6,017	Here's one on ebay. You can probably get a better price with the make an offer option. Here's another even cheaper with the best offer option. __________________ 2001 BULLITT GT I DON'T CARE WHERE THE CAR IS MADE. IF YOU CAN'T BEAT IT DON'T TALK SH*T!

March 8th, 2007, 11:08 AM	#8
ChrisJ The Cable Guy... 2002 Mustang GT SLOW Join Date: Jun 2006 Location: Shepherdsville, Kentucky Posts: 15,372	I would not give that for a trak-loc...For that price I would go ahead and get an eaton diff... __________________ My Junk www.myspace.com/cjobe

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