I am wondering what tranny the high horsepower guys are using. We are looking at making 1500hp on our next build, can a 727 be built to handle that level and if so what parts would you use? Alternative transmission suggestions are welcome as well, we are not committed to anything in that department yet. Thanks

Depends on the weight of your ride too I guess. My buddy runs a 727 behind a approx. n/a 1200hp hemi in a 70 Roadrunner @ 3700lbs running high 8's. And so far it hasn't given a cramp.
Give John (CRT) a call to be sure.

Bruno type set up with a lenco. Thats where they incorporate the lenco with a converter. However if street driven this may not be an ideal set up.

Lots of good trans out there to handle that kind of power.

I personally dont know of any 727s behind anything with that type of power.

Go Lenco, or Bruno, if nothing else, the ease of picking your gear ratios.

we run 1500hp with a n/a hemi with a 727 with no issues

7sec from your sig i can assume you are running a dynamic trans? The powerglide option came up but were concerned about vehicle weight (approx 3400 pounds)

Get over the friggen weight issues and a Glide. You know where that statement came from? Mopar boards!

With that much HP it doesnt matter what the car will weigh.

You could go TH 400 if your worried about the weight and the gearing.

Buddy ran 8.2s in 3900lb car with a glide.

I personally would go with a Powerglide. Like Garceau said, the weight thing is BS. I have a glide in a 3200+ish car and have no problems at all.

In contrast to that statement, have you considered a Pro-Flite?

A good glide is your best bang for the buck. I recommend a Mike's transmissions ultimate glide.

Yep, powerglide.

A chevie friend has ran several Turbo charged combinations. He has several transmission options. He has tried the glide several times but says he cannot build boost quick enough with the glide. He often jokes and say he does not make enough power for a glide. He uses a turbo 400 with aftermarket ratio's. He has sense went to a crank driven blower and still runs the 400 but takes off in second now.

I would have no problem running a 727 with your combo. Tranzact has a new gear ratio available. No matter what you do if running a 727 I would recommend running a 1" spacer between the engine and transmission to allow room for a 1" deeper torque converter. I found when switching to a powerglide that the extra 1" in dept of the chevie derived converters is the secret of why these chevie transmissions seem to have so much popularity in the high HP ranks. If doing it all over I would still have a 727 in my car and possible with a stock ratio 2.44 first gear. Something to consider if running a 3 spd behind a turbo would be to have the 1st to 2nd gear change shifted in relation to boost and not RPM. Just a thought.

Leon

I just sold my 727 from behind my turbo'd 572.
Thought it would be a good idea to get rid of it before I broke it.

Went to an extreme automatics Turbo Glide, best of both worlds with the capability to handle whatever my engine can make.

glide here too,

I have been trying to learn about turbo setups of late.

After too much time spent on the various turbo oriented forums, it is interesting to see that there are so many cars that have switched over to glides to exploit the the turbo loading/spooling effect. Many of those cars have gone way down(numerically) in rear gear also.

Some switched from their 3(-4-5-6) speeds for the spooling, some for traction woes, others for parts carnage / reliability.

At 1500 hp, it would seem you should have plenty of power to run a PG.

Get a 'glide with a brake, a two-step limiter, use a good converter.

Overall, this is cheaper, easier and probably the most safe.

I'm going glide behind my 468-turbo motor.

My thoughts behind it were:
1.A lot of people use them and build them so parts & service/repairs are easy to come by

2.The taller 1st gear will absorb some of the initial shock of a Turbo Motor to the car and tires coming off the line.

3. Price of course

4. Less shifting

I got a heck of a package deal on a used but freshened up set-up.


Take a look at ATI's line up of PG's that come with warranties.