Has anyone broken the TR3650's input shaft? - Page 2 - MustangForums.com


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Old 03-25-2014, 04:52 PM   #11
outceltj
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My 60ft times have all been on my stock input shaft. My fastest is on the sig and Im cutting 1.6-1.7 all the time and I never had a failure. Mine is an auto as well. My car is at brenspeed right now. Its actually just getting done. They have to finish the break miles on the motor and finish dyno tuning it. Im picking it up Saturday. Should be around 525 when hes done.

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Old 03-25-2014, 08:49 PM   #12
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Well, .... somewhere out there there are enough breaking them to have created a "market place"
for the manufacture and sale of stronger alternatives ...... just sayin'!


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Old 03-26-2014, 07:16 AM   #13
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Originally Posted by outceltj View Post
My 60ft times have all been on my stock input shaft. My fastest is on the sig and Im cutting 1.6-1.7 all the time and I never had a failure. Mine is an auto as well. My car is at brenspeed right now. Its actually just getting done. They have to finish the break miles on the motor and finish dyno tuning it. Im picking it up Saturday. Should be around 525 when hes done.
Thats pretty damn good, especially with those 60ft times means you're not exactly being easy with it. I have been pondering letting my 700rwhp engine currently being built run with the 3650. But I won't be drag racing it on the track with the transmission or power shifting. Just don't want to buy a 10 spline clutch just to twist the input shaft and get a 26 spline 6-speed....
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Old 03-26-2014, 07:38 AM   #14
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...Just don't want to buy a 10 spline clutch just to twist the input shaft and get a 26 spline 6-speed....
And there is the question. It appears that the 3650 can handle some good amount of power if you don't drag race it. Many of us drag race. Is it worth the $1500 to install the input shaft when we get near 500 ft/lbs of torque or do we have to spend $5K or so to change to another trans like the T56?
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Old 03-26-2014, 09:15 AM   #15
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Thats pretty damn good, especially with those 60ft times means you're not exactly being easy with it. I have been pondering letting my 700rwhp engine currently being built run with the 3650. But I won't be drag racing it on the track with the transmission or power shifting. Just don't want to buy a 10 spline clutch just to twist the input shaft and get a 26 spline 6-speed....
Thanks. I did have brenspeed install a hardened input shaft. Since the motor was going to be out. So really the only thing I have done is put PA deep trans pan. I think these trannies are rugged. I think they are ok to about 550. I certainly try to drive with some sense even when I'm at the track. My feeling is if the tranny goes then I have a reason to get a new one.

Is that 700 at the wheel or crank??? I'd probably be a bit timid as well. You will be pushing some good power. Who is doing the work

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Old 03-27-2014, 12:46 PM   #16
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Thanks. I did have brenspeed install a hardened input shaft. Since the motor was going to be out. So really the only thing I have done is put PA deep trans pan. I think these trannies are rugged. I think they are ok to about 550. I certainly try to drive with some sense even when I'm at the track. My feeling is if the tranny goes then I have a reason to get a new one.

Is that 700 at the wheel or crank??? I'd probably be a bit timid as well. You will be pushing some good power. Who is doing the work
700 wheel, and that may explain it a little more the hardened input shaft. I may go ahead and do that a long with being easy on it. Bob Kurgan/Kurgan Motorsports will be doing the tuning/block assembly.


Edit: After looking at your mods in your sig you are running an auto.... We are talking tr-3650s here...

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Old 03-28-2014, 11:10 AM   #17
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Originally Posted by 429244 View Post
Search finds some old threads.
Diabolical,
Are you still using a TR-3650? If so, did you break the 10 spline input shaft yet?
Thanks.
Still on the stock 3650. Still on the stock 10 spline input shaft. 200+ passes and 500+ rwhp and still going strong.
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Old 03-29-2014, 06:26 AM   #18
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Still on the stock 3650. Still on the stock 10 spline input shaft. 200+ passes and 500+ rwhp and still going strong.
I didn't expect that to be your response! What clutch do you use and at what rpm to do you leave the line? Sorry for all of the questions but these days $5000 for a T56 is just not in the budget.
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Old 03-29-2014, 09:59 AM   #19
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McLeod RXT. I launch off of a 2-step anywhere from 3200-4500 rpms, depending on the track prep and weather.
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Old 03-30-2014, 06:18 AM   #20
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Thanks for the information. I will look into those clutches. I saw your other post about your stock short block making over 500rwhp. Your tuner is impressive.
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