spline question?

I

inphiniti

Active Member

Mar 15, 2003

412

3

28

Providence, RI

Sep 12, 2007

#1

• Sep 12, 2007

• #1

never messed with a rear end so im in a bit of a question asking mood... please bare w/ the stupid questions.... LOL

what comes stock in a 8.8 rear?

what does a spline do?

and what would the difference be of me upgrading my Track-Lok, and axles to a 31 spline?

whatever info u guys can provide... would be very helpful! thanks fellas!

 

Bosko5.0

Active Member

May 18, 2006

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longwood, FL

Sep 12, 2007

#2

• Sep 12, 2007

• #2

28 spline stock.

31 spreads the load over more area.

 

I

inphiniti

Active Member

Mar 15, 2003

412

3

28

Providence, RI

Sep 12, 2007

#3

• Sep 12, 2007

• #3

Bosko5.0 said:

28 spline stock.

31 spreads the load over more area.

Click to expand...

do you think it would be a better decision to down the road, swap these out? since in the summer i run a 295(currently) but will be changin to a 305? also the car will have alot more power by next summer? i see buyfordracing.com has some decent pricing on them...

 

94-302-vert

Active Member

Aug 16, 2004

1,947

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36

NE CT

Sep 12, 2007

#4

• Sep 12, 2007

• #4

Jimmy, if you are planning to stay with a street tire then the 28 spline should suffice. if you ever plan to got DR or slick than upgrading is not a bad idea...

 

I

inphiniti

Active Member

Mar 15, 2003

412

3

28

Providence, RI

Sep 12, 2007

#5

• Sep 12, 2007

• #5

94-302-vert said:

Jimmy, if you are planning to stay with a street tire then the 28 spline should suffice. if you ever plan to got DR or slick than upgrading is not a bad idea...

Click to expand...

the 305 is gonna be a bf goodrich street radial or nitto sr... u think i should still upgrade?

and if i were to upgrade the spline to the 31, do i have to do the axles as well?

 

94-302-vert

Active Member

Aug 16, 2004

1,947

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NE CT

Sep 12, 2007

#6

• Sep 12, 2007

• #6

If you upgrade the carrier you must upgrade the carrrier. One fits into the other.

The splines on the carrier side gears mesh with the splines of the axle.

My understanding is that the other difference between the 28 and 31 spline axles is that the axles are larger diameter (splines are the same size but more of them)...

As for if it is worth it to upgrade... that is hard to say. A lot of guys run around with 500 HP and no issues...

 

I

inphiniti

Active Member

Mar 15, 2003

412

3

28

Providence, RI

Sep 12, 2007

#7

• Sep 12, 2007

• #7

94-302-vert said:

As for if it is worth it to upgrade... that is hard to say. A lot of guys run around with 500 HP and no issues...

Click to expand...

with the 28 id assume correct?

i was just drawin upa list as to what i have left to do with some purchases and didnt know if this was worth it at all... thanks man!

 

Bosko5.0

Active Member

May 18, 2006

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longwood, FL

Sep 12, 2007

#8

• Sep 12, 2007

• #8

you can get hardened 28 spline axles. thats what I did.

 

SublimeRT

Member

Jan 25, 2003

230

1

16

Clarksville, TN

Sep 12, 2007

#9

• Sep 12, 2007

• #9

The stock 28 spline setup really seems like a hit or miss thing. I've seen/heard of cars snapping the axles with 300rwhp and Nitto DRs; on the other hand, I put a solid out of a 94 GT with 3.73s in my old 04 Cobra. I didn't baby it and put over 25k miles on it, some of that with DRs, and never had a problem. The car it came out of was my friends HCI 150 shot 94 GT that he launched off the limiter on slicks, spraying out of the hole. Stock axles and diff. That said, I will be building the rear in my '94 with 31 spline stuff for peace of mind, if nothing else.

 

go-stang5.0

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Jan 27, 2003

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Glenview,Il

Sep 13, 2007

#10

• Sep 13, 2007

• #10

I don't think 31 spline axles are really that much stronger than 28. The bigger difference is that the stock axles have machined splines where as good aftermarket ones (28 or 31 spline) will have cold rolled splines which make them much stronger. True you loose ductility with the cold work but hey a twisted spline is prolly just as bad as a broken one.