a 727 would hold up fine 4 his application. just need a few good parts, steel billet drum, billet low/reverse piston, hardened band strut & a bolt in sprag. trans will last 4 years & years. stay safe, seeya.

My trans builder's experience is that a torqueflite is fine as long as it's footbraked (no trans brake). If you're from the Chicago area, this guy built the torqueflites that were ran in the Sparticus car for years.

ATI coming news at SEMA claims

Quote:

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The next upgrade component is ATI’s 904/727 Torqueflite. One inherent problem with the Torqueflite transmission is that it wants to break the rear sprag on a hard launch.
ATI’s new rear sprag, which only utilizes one OEM inner element piece, is a totally new design that promotes more contact area then a conventional roller clutch.
It is retained in the case by three 1/4-inch dowels and four 1/4 inch shoulder bolts.

This allows the Torqueflites to easily handle 1000 lb/ft of torque

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when will they be avaliable?? thanks.

Wow this thread is still going? I have been using the turbo 400 for a year and a half now with no problems...

Thanks for the update HemiFred!

Shouldn't a 727 be just fine at this level of horsepower?

whats the story on driveshaft lenth when switching from a 727 to a th400?

If I remember correctly, it's about a 9" difference in length between the two transmissions. Driveshaft for T400 will be longer.

i think you have other issues.Heavy car?...727s are better then that..my 9.60 car 1.30 60foots with brake and stock drum no problems 15 years,just stay on top of it and it should hold up fine