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Post deleted by Defbob [Re: JohnRR] #129736
10/01/08 10:22 AM
10/01/08 10:22 AM

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Re: Bulletproof 727? #129737
10/01/08 10:24 AM
10/01/08 10:24 AM
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JohnRR Offline
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Quote:

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Quote:

saw John's post on cost over 2100.00 then came across this which is about the same P/G unit I use from Trans Specialties.cheap and strong. they build one for 1800 Hp with after market parts for 2800.00
Quote:

TH-400 Chevy Racing w/Reverse Manual Valve Body [40011] $1,267.00
Rated to 850 HP Deep steel pan Reverse manual valve body










with that included the T 400 is still a bargin and stronger


Well I stand corrected, but don't forget to add $300 - $500 for either the adaptor OR an ultrabell .




oh I forgot fabbing up a new crossmember also .

I'll stop feeding the dead horse for you ...

Last edited by Johnrr; 10/03/08 02:03 PM.
Re: Bulletproof 727? #129738
10/01/08 11:15 AM
10/01/08 11:15 AM
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Portage,michigan
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Mancini Rebuild Kit, and a manual valve body and the right person to build it. Should be all you need
Remember guys he said 600hp not 1600hp

No Need to go wasting money.






My car stripped the planets at not much above 600 horse a few years ago in a pro built (JPT)tranny.

The list that John had i think included the steel planet as a upgrade.

At the end of the day, all the hard parts are what 30 years od and were never intended for 600+ horse high torque use on a regular basis.

Sure you might get lucky, but it just a matter of time, as i found out. When those tranny's were made a 4+ inch crank was decades from even being thought about in the smallblock world. As far as big blocks, i am not sure.


69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8

Re: Bulletproof 727? [Re: Unknown_element] #129739
10/01/08 11:28 AM
10/01/08 11:28 AM
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State of confusion
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Been runnin mid to low 10`s w/a basic rebuilt 727 w/a Stock drum, bolt in sprag and good kit and a revese cheetah v/body. No problems and at my last freshen Darrell parks said it looked perfect after 4 years and freshened it anyways and rollerized it while in there. Total cost for the freshen, bad a$$ kit and rollers was $680.00. Works awsome at 7000+ rpms. Don`t need much at 600hp although the good drum might be added insurance.


72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
Re: Bulletproof 727? [Re: JohnRR] #129740
10/01/08 01:19 PM
10/01/08 01:19 PM
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Southington Ct.
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Quote:

Quote:

A bulletproof and cheap 727 is called a TH400






I doubt that you can't just pull one out of a pickup and throw it your race or hot street motor ...

People go to the TH400 because of the design , NOT the cost .




I have a Turbo Buick with a TH400 and recently built it to handle about 1200 HP. This is what I spent.

Billet input - $299
Billet intermediate - $229
Modified direct drum with super sprag(common failure point above 750HP) - $579
Trans brake - $389
Red eagle clutches ? (same price as any other transmission)
Rollerized rear output - done by myself
Pump mods to protect engine thrust - Done by myself
Center support mods to stabilize direct drum - Done by myself
There is at least $1500 in hard parts not including clutches and band. These transmissions are very good becasue they stack the clutches on the shifts but become unreliable after about 750HP and are known for intermediate sprag failures. This is why I bought the super sprag drum. Some of the extream TH400 use a direct drum that eliminates the intermediate sprag and makes it more like a 727.


1970 Challenger w/572 Hemi street car and my pride and joy. 1986 T-Type with 272 Stage 2 Buick V6 engine - True 8 second street car. Just updated the engine and put down 928 HP @ 35# boost to the ground on chasis dyno. 1976 Cee Bee Avenger Jet Boat - 460 Ford powered.
Re: Bulletproof 727? [Re: dave571] #129741
10/01/08 01:45 PM
10/01/08 01:45 PM
Joined: Jul 2008
Posts: 30,447
Florida STAYcation
dOoC Offline
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Quote:



I've seen a 500 hp small block scatter a 727 like it was made of fine china.






Is this topic about a BLOW-UP or BULLET "proof" 727 ?

From what I know .... the only way to BLOW UP a 727 is to have a sprag fail then the front drum come apart. The "cure" there ? ... a drum that will withstand 2.5 engine rpms. .......Correct ?

BULLETproof ? .... aka lasting forever ?? .... at some of the prices some of these rebuilders want -- I would hope that these trannies last until the year 2100 !!

Re: Bulletproof 727? [Re: TRENDZ] #129742
10/01/08 04:07 PM
10/01/08 04:07 PM
Joined: Jan 2003
Posts: 4,275
Morrow, OH
markz528 Online content
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Morrow, OH
Quote:

None of them have anywhere near the trouble free operation that my A&A built 727 had. My car=3700lb, 3.50 rear gear,8.85/155 best. Trans was freshened once in 5 years after a rear end failure.




I hope I have the same luck. I just picked up my new A&A 727 on Monday. My other tranny lasted 50 and 21 runs.


67 Coronet 500 9.610 @ 139.20 mph
67 Coronet 500 (street car) 14.82 @ 94 mph
69 GTX (clone) - build in progress......
Re: Bulletproof 727? [Re: markz528] #129743
10/01/08 07:08 PM
10/01/08 07:08 PM
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Posts: 1,301
Penna
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70satelliteguy Offline
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"None of them have anywhere near the trouble free operation that my A&A built 727 had. My car=3700lb, 3.50 rear gear,8.85/155 best"

I also have a 727 filled with A&A parts and although it was $$$ it is staying together and works flawlessly for the past 2 years and we race almost every Friday night during the summer.
70 Sport Satellite, 3550 with driver,572 Motor with A&A Transbrake,1.31 60 fts. 8.87/156 mph
Mike
p.s. Rick Allison is also a very nice guy.

Post deleted by Defbob [Re: 70satelliteguy] #129744
10/01/08 07:52 PM
10/01/08 07:52 PM

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Re: Bulletproof 727? [Re: Unknown_element] #129745
10/01/08 08:17 PM
10/01/08 08:17 PM
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Cincinnati
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Cincinnati
Most of my 727 failures happened during a rearend failure.
after I moved away from the 8 3/4 and quit breaking gears my sprag initiated explosions went away. (Knock on wood)I have seen the remnants of a 727 explosion in the pits. I have no idea how this could happen.

Rick.

Re: Bulletproof 727? #129746
10/01/08 08:19 PM
10/01/08 08:19 PM
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Rock Springs
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I must be lucky, I have never lost a 727. The are brutal strong, very little aftermarket parts. Better band, Low band apply Valve Body, basic transmission tricks. Run one season after season, no trouble ever. Between 600-700hp, in cars 3000-3500 lbs. I always have always used blanket or sheild too.

I switched to a PowerGlide this year, they are very strong, and cheap to build also, only thing aftermarket I added in these trannys is Clutch hub, duel ring servo, valve body, good clutches, deep pan etc, stock 1.76 planets etc. Stock Cases are very weak, hard to find one that isn't cracked somewere. About one out of half dozen was good.


[color:"red"]65 Hemi Belvedere coming soon [/color]
[color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]
Re: Bulletproof 727? #129747
10/01/08 08:22 PM
10/01/08 08:22 PM
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Cincinnati
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How can a 727 completely distroy its self and the mid section of a Barracuda in the pits?

Rick.

Re: Bulletproof 727? #129748
10/01/08 09:34 PM
10/01/08 09:34 PM
Joined: Dec 2006
Posts: 488
Charleston, SC
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Quote:

not always the case with many guys.



Same goes for the glides. Seen many broken ones over the years.

Post deleted by Defbob [Re: SCDaytona] #129749
10/01/08 09:55 PM
10/01/08 09:55 PM

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Re: Bulletproof 727? #129750
10/01/08 10:06 PM
10/01/08 10:06 PM
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Texas
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I got a buddy that used to break a glide every time he went to the track. He even broke the ones from Mikes I think it is out of California. They were like 3500 a pop 10 years ago. Never did get to see it make a full pass. But I did see him stab it about 3 times one night an run a 4.80 in the 1/8 some kind of a Rodac with a 871 in a 40 ford pickup.


Getting old just means you were smarter than some and luckier than others.
Post deleted by Defbob [Re: dannysbee] #129751
10/01/08 10:21 PM
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Re: Bulletproof 727? #129752
10/01/08 10:41 PM
10/01/08 10:41 PM
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Posts: 12,129
Cleveland
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Cleveland
Ask Nick @ CompuFlow.. Over 800 HP and over 500 runs on his tranny from Benny @ Enhanced in Cleveland. If in Ohio, you can not go wrong.


Join the quickest team in motorsports. Team FireCore. CustomWiresets.com
Post deleted by Defbob [Re: sunroofgtx] #129753
10/01/08 10:46 PM
10/01/08 10:46 PM

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Re: Bulletproof 727? #129754
10/01/08 10:51 PM
10/01/08 10:51 PM
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Cleveland
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216-281-0303 Benny.. Sorry, wish I had more. He does 727's, 904's, fabbed 904's with pushbuttons. Call, you will like. Ask him for the birthday special. Not saying anyone else here can't build one, but I've had the same car for 26 years, and have only had 2 tranny's in it, a street, and a race/street, both from him. You will stay in the triple digits for the build. But, there is definately talent here on the board.


Join the quickest team in motorsports. Team FireCore. CustomWiresets.com
Post deleted by moparts #129755
10/01/08 10:56 PM
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