Being brand loyal is fine, but in many cases makes NO economic sense. Spend a fortune on a 727 with all the goodies.......great, what do you have? A bunch of expensive parts in a STOCK trans case, why? Just so you can say your Mopar has a Mopar trans. Few people care about that crap anymore these days. Use what works the best and is a better value per dollar spent.

Plus guys talk out of both sides of their mouth anyway. They say a "Mopar has to have a Mopar trans" or it makes it less of a Mopar somehow. Yet those same people have no problem with a Lenco, a Nash, a Liberty, Bruno trans, which are all aftermarket trans. But when you mention the Glide or Turbo 400, it's like you kicked them in the nuts because that's a GM trans. No it's not. It's an all aftermarket parts, RACE transmission that happens to be based on a GM design. Same as most 9" Fords have zero factory parts, was just designed by Ford. A Dana which was designed by DANA corp, by the way is considered fine, since it came in some factory Mopars. Well guess what, so do 9" rears and powerglides...think Drag Pack. So get over the silly crap already

first of all I am a loyal mopar man. why are you on here trying to start a argument?? the man ask about 727 right?? not anything else you brought everything else up . and I am just saying a mopar guy will never have a good trans if no one works and develops one or builds a case. like you said the 400s are all aftermarket why cant we have aftermarket 727 ?? there is a 65 Plymouth that runs at pittsburg raceway and it has a b1 motor 727 and a dana 60 weights 3100 pounds and goes 7.70s so it can be done.

Mine is street driven and have thrown over 900 ft lbs on it and it's still fine,,,,,,,,,so far,,,,,,,,

And still pushing buttons!

Im just doing this because its what I have. I want the 1.45 for slr purposes. Nothing to do with brands. As you have said before Monte, at this level everything is aftermarket anyway.

Well, I've decoded to just suck it and see, as they say lol

I'll throw it in and see what comes out the bottom, if anything.

Maybe, if anything it'll contribute to the "what will it take" Mopar knowledge base lol.

I don't believe Monte is trying to start an argument, he was just pointing out the facts that everything has it's limitations.
The 727 is a good transmission to a certain level, past that level you're building an expensive bomb. There's not an aftermarket case/housing for the 727 because the demand isn't there, Glides & TH400s will always be more economical.

Exactly , it's not the HP that breaks stuff it's the torque.

Darren how much Torque is that engine making ?

I agree, many are reaching or have already exceeded the limits of this OEM stuff. There was another thread asking about aftermarket 904 cases. You can put $50,000 worth of parts in a stock case and you still have that weak link. Finding decent cores is another issue. I'd like to see someone step up with good cases for Chrysler transmissions too. But the development of the T400 based stuff is way ahead at this point. I believe that's the reason for a lot of these Hemi Super Stock guys going manual. Same problem with blocks for small block projects. Guys can make power, but they're trying to find blocks that won't break in half.

You just have to decide if you want to keep beating your head against the wall.

FYI on the 400. My buds runs one with a 540 that was build for it by a great Trans guy it won't last more than 2 years. 800hp. He's goin to a glide next year

I am NOT trying to start an argument..........I am stating facts. At a certain HP level a 727 is NOT a good monetary investment. You have a bunch of very expensive, trick parts, in a STOCK case. You want to do that, because you are a diehard Mopar guy, that's fine, but it is NOT a wise investment. For less money going aftermarket, you get a better, lighter, more reliable, safer trans.

Somebody ponies up and builds an aftermarket 727 case and some more affordable internals, we might talk............but that probably is NOT going to happen, so it seems a moot point.

So and so has this car with one that runs high 7s.............that's fine too, but frankly these days, high 7s ain't that fast. Nobody seems to be having a problem with the twin turbo Dart guy that runs Dragweek and his car has a 400. Yeah, he broke it, BUT he also found the parts to fix it at the track. Would that have happened with a high buck 727.......likely NO

So what is in fact the preferable setup to the 727 for a guy that has 1000+ hp and a fair amount of tq in a heavy car and wants to retain 3 gears??

Mine is no where near DT's power level. I can say I've had good results running stock shafts, planets and cases at 150mph@3350lb level. I did strip a front planet at 250 passes.
Doug

Those stock aluminum planets were the 1st to loose it's teeth!

My GTX was 3200lbs and made over 1200hp on the hose. On a 29.5 x 10.5 tire. I shelled everything that could be shelled in a 727. When it got to the point of buying expensive aftermarket output shaft, I threw in the towel and went to a glide. For a 3 speed, the Turbo 400 would be the way to go. They can be built to withstand over 3000hp. It doesn't take a lot for them to hold 1500 with relative ease

There are serious Duramax guys ditching Allisons for built 47rh's in their drag trucks because they shift good and take it.

So th400 can be built in a SFI case so no shield is needed? I assume an adapter plate of some sort is available for mopar bell bolt pattern? And a spacer on the crank? Will it be bulkier that a 727 with a shield as in floor mods required? And after those extras it will still be cheaper than a full tilt 727? Seriously I am just asking as I need to know for my own build.

I believe Reid makes a SFI bell housing for BBM.

Here is ati's price list for help on some of those questions I'm not sure if other companies make them.

http://www.atiracing.com/products/trans/pg/supercase.htm

The case is built for removable bellhousings, so you just need to buy a mopar bellhousing.

Need small block patern for Gen3 hemi

They make those too.
JW also makes them.