Brian_Zinchuk

Went to Maryland International Raceway today for the weekly test and tune. If you've been reading my threads you have prob seen a bunch of guys recommending power shifting to take a tenth or two off of my ET. Well it worked for a minute. Struggled with it the first 3 passes not being able to get into 4th gear but still ran 11.5s on all three runs. 4th run I let my car cool for a while and then busted out a new best 11.21 at 123.3 mph with a modest 1.55 60 ft. Next run I went out and was doing great through the 1000 ft. A modest 1.54 60 ft with an 1/8th mile of 7.14 at 98.5 mph a whole tenth faster then the run before. But when I went to shift into 4th I blew the trans and coasted to a 11.4 at 103 mph. I was warned that the trans would wear faster from power shifting, but I had know idea that it was going to go that quick. I got the car towed up to JPC ($260) where it was confirmed that it was the transmissions 10 spline imput shaft that went. The car will now get a 26 spline and 4.10s will go in while its there as well. FYI: It was the stock trans.

howarmat

how long is it out for?

Brian_Zinchuk

2 weeks at the most. No body makes a 26 spline imput shaft for our 05+ stangs yet that myself or Justin know of so they have to get a 10 spline custom fabricated.

david01130

sorry to hear that. it seems like these input shafts are the weak link in the stock tranny. this seems to happen to a lot of people. but Im interested to see how the custom input shaft works out

07 S197

+1, if it turns out good it would save me from buying the gt500 tranny

Brian_Zinchuk

I'll keep you all updated. I'm sure it will work out, at least I hope so.

moosestang

I'm surprised you made it this long on the stock input shaft. Most people break them soon after the 500rwhp mark.

If you keep power shifting, the synchros will be next to go.

moosestang

I want a gt500 tranny! I'm saving my pennies.

Texotic

you're just putting off the inevitable. I'd go with the GT500 trans ASAP.

Brian_Zinchuk

Could be true. But I'm just trying to get back on the road and I can't afford to replace to entire trans right now. I got to wait for that tax return.