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Why the love affair with 26 spline input shafts?

Discussion in 'Driveline' started by MJR_TRBL, Aug 29, 2010.

  1. TRBO VNM

    TRBO VNM Authorized Vendor Authorized Vendor

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    typically, when you wheel hop. I have seen some failures with just straight on hooking like a SOB with a lot of power, but rare.
     
  2. maxinator

    maxinator New Member Established Member

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    Dang you all sold me when is the best time to do this with what other mods and about how much am I looking at?
     
  3. Red Poison

    Red Poison Over it Established Member

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    this should get moved to smackdown, lol

    :thumbsup: Why do you think I wanted mine back!
    Well, for the price that IRONTERP would sell it for, he do it... lets see $700 / $20 = 35 times, so now you're really winning.


    I started not to post, but your attitude towards asking a question and then being educated is a bit off

    OP, you fail at asking questions. Here's some advice:

    1 - Next time you ask a question, do it in the tone of a newb... not of someone that's been dealing with these cars since their creation.

    After numerous pics and stories of peoples experiences of breaking them, you still think it is "piece of mind?" How could anyone refer to upgrading to something that will break as piece of mind? That's sounds idiotic. Children's car seats have weight limits... when the weight of your child exceeds the specs of that car seat, you get a different car seat, as to not put your child in danger. When you mod a car far beyond its factory state, putting more stress on all the parts that weren't intended for such loads, you upgrade the weak links. Sounds like you wanna leave your overgrown kid in an infant car seat.:bored:

    Now you're starting to sound hypocritical... unless your definition of "getting on it" is 1/2 or 3/4 throttle. You better not ever go WOT because thats asking for trouble. Have you not heard the experiences of just the few thats even cared to try and educate you about their ROLL racing experience breaking them? Does anyone in here thats roll raced before not go WOT, or as you would say, "get on it?"

    No we get your point. Your point is that you clearly have no idea what's all involved in changing an input shaft (besides what you've read in a few threads), how much it costs in labor to change one, or how much money you waste changing one part at a time as they go bad.

    Advice: Leave your car stock and your argument is valid. I would actually agree with you. Pulley, tune - the most basic and least expensive way to add 50+hp and "get on it," its only a matter of time before you break something. I don't call that piece of mind, I call that necessary. My time and car is more important than sitting on the side of the road waiting for the right tow truck to show up because the one that showed up the first time after an hour is not equipt to pick up a car such as mine without damaging it because it sits too low, while my son is in the back seat crying because daddy didn't would wait and spend $350 to insure that "this" - meaning breaking the input shaft problem - would'nt happen.

    I'm not the expert but the ones that are already posted in this thread.

    Do what you will.
     
    Last edited: Sep 4, 2010
  4. black 10th vert

    black 10th vert Active Member Established Member

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    ^ very well put!

    I can't believe this is still being discussed. I agree with the op that "some" of the things we upgrade on these cars may be because "every on the forum says to do it", but in this case, I think you are dead wrong. The ONLY way, I feel it is plenty strong, is on a completely stock, only street driven car - that is never on drag radials! Any other scenario, and it's on borrowed time in my opinion. Would I rip the trans out "just" to upgrade it? Hell no! But, as I said earlier, when my clutch goes, it will surely be changed!
     
  5. black 10th vert

    black 10th vert Active Member Established Member

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    I wondered about this also. Since nobody answered this, I can only assume that it's not an issue, either way, since some people have run the twin on the stock shaft (don't know why you would do that, though :rollseyes).
     
  6. justa03

    justa03 UVBNBIT Established Member

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    On a side not has anyone broken a 26 spline before? I put a liberty in my car 2 years ago and just got back from the track last night and pretty sure I snapped the input shaft. Ill know more when I tear into it but im pretty sure its the input shaft if I had to guess....
     
  7. IronTerp

    IronTerp Mid-Atlantic Cobra Assoc. Moderator

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    Haven't heard of any "breaking" per se like the 10 spline's, but I bent my 26 spline at the Terminator Shootout in May. Really pissed me off and set me back $325 that I wasn't planning on spending. But gotta pay to play when you dump the clutch at 6 grand.......
     
  8. Ironhand

    Ironhand Banned

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    Well from reading this thread I would say there is a market for that "Bent" 26 spline input shaft. Would look really good on someones work bench next to those "Great" 10 spline shafts...:lol:
     
  9. justa03

    justa03 UVBNBIT Established Member

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    Im not pretty sure its not bent considering it doesnt move at all. HA but might tear into it tomorrow so I will get some pics up if its broke.
     
  10. Flad

    Flad Wanting Established Member

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    wondering the same thing how many 26 have failed ?. also what makes them stronger. larger dia, better grade of steel ...what.
    Also how many 10 are running around making over 450 hp that have survived.
    FYI the failers make the threads, Just like the tick back in the early days, the few isolated cases made the headlines....just saying'

    has there been any independent testing, proving the claimed benefit.
     
    Last edited: Sep 5, 2010
  11. ZOSO

    ZOSO colorados baddest eaton Established Member

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    Altho the "splines" are smaller on the 26 its the base diameter of the shaft is what makes it or breaks it. The smaller splines also provide more surface area vs. the 10spline. It's the same principle for rear axle shafts. 35 vs. 31 vs. 28 and so on. The more splines the stronger. Measure the base diameter of each shaft and you'll find the 26spline is bigger diameter.
     
  12. F1reStart3r

    F1reStart3r Flubolaids Established Member

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    507/488 stock 10 spline with a spec 3 going on 3 years now. Has seen rare track use due to a shitty schedule, but it's held up when I've gone. Also I use a 275/40 mickey on stock wheels. Last time I was at the track I cut 1.7x 60's so I'd say that I'm in the average area for launches. A lot of it might have to do with shock load and how the rest of the car is set up. Then again I'm not an engineer so I concede.
     
  13. Flad

    Flad Wanting Established Member

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    ^ this is my point if all the 10 that held up posted , instead of just the failure's ...public opinion would change. just using this particular thread to make a point
     
  14. IronTerp

    IronTerp Mid-Atlantic Cobra Assoc. Moderator

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    Did you real the whole thread? The OP wanted to find out what the deal was with the tendency of the informed Terminator owners to switch to the 26 spline shaft when doing a clutch change. He was given the answer quite thoroughly.

    But, bottom line is, if you would like to keep your 10 spline input shaft, go for it. It's you car to mod as you feel is appropriate. If it breaks and you would like to replace it with another 10 spline, my offer still stands for you to buy mine for $10 plus $10 shipping. It has 25,000 miles on it and probably 20 track passes but is in great shape. :beer:

    And to answer your earlier question, I am the only person that I personally know of that has bent/damaged a 26 spline.
     
  15. unit213

    unit213 Bone Stock Established Member

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    I know of two local guys (to me) that have bent a 26 spline input shaft.
    Just throwing that out there to support your comments.
     
  16. IronTerp

    IronTerp Mid-Atlantic Cobra Assoc. Moderator

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    Thanks Unit. Guess it's more common than we thought. They don't seem to literally break apart like the 10 spline shafts. Mine was only slightly bent but I'm sure it would of caused a vibration if I had reinstalled it.
     
  17. unit213

    unit213 Bone Stock Established Member

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    Yeah, I've never seen a snapped 26 spline input shaft like you would see with a stock 10 spline shaft. The 26 spline shafts seem to bend like you said.
     
  18. TRBO VNM

    TRBO VNM Authorized Vendor Authorized Vendor

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    another argument for some of you that want to continue this thread.....

    then why do the viper and corvette come with 26 spline input shafts from the factory? And don't give me the reason of more power from the factory. 99% of the people on here increase their power to the same or more than those cars.

    does the gt500 come with a 26 spline input shaft?
     
  19. mach1033

    mach1033 Active Member Established Member

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    I did it for piece of mind.:shrug:
     

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