Well I think I just broke a new Billet intermediate shaft. - Ford Powerstroke Diesel Forum
6.4L Performance Parts Discussion What has or has not worked for you?

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post #1 of 20 Old 05-16-2010, 04:55 PM Thread Starter
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Well I think I just broke a new Billet intermediate shaft.

Just gave it a little throttle ( leaned on it a little ) and bang coasted to a stop engine was still running just winged. Put it in gear and it dosn't move. All gears the same. Spartan 275 tune and on the street, no nitrous.
Oh and buy the way tranny is two weeks old.
C.J.
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post #2 of 20 Old 05-16-2010, 04:57 PM
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Suncoast has been having problems with them and they are releasing an updated one in a few weeks. My Suncoast actually has the stock one in it until they come out with one that will hold up. The stock one is holding longer than the billet ones from Suncoast right now. Just wait for the updated one. They should replace it.

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post #3 of 20 Old 05-16-2010, 05:32 PM Thread Starter
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Originally Posted by 08stroker250 View Post
Suncoast has been having problems with them and they are releasing an updated one in a few weeks. My Suncoast actually has the stock one in it until they come out with one that will hold up. The stock one is holding longer than the billet ones from Suncoast right now. Just wait for the updated one. They should replace it.
I have a buddy who's one hell of a machinest i showed him my stock shaft. He stated that splines are only as strong as the median dia and by the outside of the splines being the same size as the bearing surface adjacent to the splines it puts all the load right where the splines meet this area. If one was to machine the bearing surface down smaller with a radious it would spread out the load and would be stronger, even though its smaller in diameter. He also said if splines were actually serations it would fail.
Who would of thunk it.
Is suncoast keeping everything same size or going way bigger, and changing everything that goes over that shaft.
Any idea what they are doing.
thanks C.J.
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post #4 of 20 Old 05-16-2010, 05:43 PM
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i hear they are changing more than just the shaft,way bigger, and thats why its taking so long,also a few more months is what i was told last week
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post #5 of 20 Old 05-16-2010, 05:59 PM Thread Starter
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i hear they are changing more than just the shaft,way bigger, and thats why its taking so long,also a few more months is what i was told last week
Thats good news just wish it was now.
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post #6 of 20 Old 05-16-2010, 07:57 PM Thread Starter
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i hear they are changing more than just the shaft,way bigger, and thats why its taking so long,also a few more months is what i was told last week
I guess my stock one is going in until new shaft and applicable parts are out.
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post #7 of 20 Old 05-16-2010, 09:22 PM
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I talked to them last week, and they said 2-4 weeks, so that should be about 1-3 now. Haha.

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post #8 of 20 Old 05-17-2010, 03:20 AM
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Let me start out by saying that I have no clue on the interior design of your transmission. If it is anything like mine, we are finding is more beneficial to actually running a stock intermediate. The reason being if everything is billet, nothing can absorb the shock from the torque. The stock is left in place and acts like a spring absorbing the shock. In your case the shaft was more than likely fractured before the incident and finally gave up during the light acceleration. Just something to think about

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post #9 of 20 Old 05-17-2010, 12:38 PM
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I did the same thing. Only I didn't get to drive it for 2 weeks, just a few days and one WOT stomp with the 310 and she was toast.

Needless to say, I'm less than happy with this $825 pile of **** billet intermediate shaft!

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post #10 of 20 Old 05-17-2010, 12:41 PM
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Hmm im wondering if mine is going to go. I can accellerate hard from a stop but if I do it from a decent roll and it downshifts truck limps....

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