I have a 408 stroker in my Duster. The first time that I really pushed it I broke the input shaft hub. Are the stock ones a weak point in a 727? What kind of horsepower are they typically good for? I'm estimating that my car in the in the 600 hp range.

I see that A&A Transmissions sells a stainless steel one and an aluminum one but they are a little on the expensive side if I don't really need one.

Thanks for any input on this!

Shad

I've seen that failure before but I don't think it's all that typical. I'd try another factory piece.

Years ago I swapped a mild 360 in place of the 225 in my 72 Swinger. Both had 904 type trans behind them so I reused the original driveshaft.

One of the first times I drove it I was in stop and go traffic and whe nI took off the weld on the front of the driveshaft failed. and the yoke parted company from the tube. Once I got it home and inspected things I found the weld had cracked about 2/3's of the way around, rust line evidence and the 225 didn't have enough to finish the job, but the 360 did.

I suspect you had an existing issue the stroker pointed out for you.

As John said, use another factory one, maybe have it magnifluxed for piece of mind.

Forget the 50 year old stuff. Buy the good stuff from A&A, build it and forget about it.