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727 for SS hemi #2467661
03/17/18 10:31 AM
03/17/18 10:31 AM
Joined: Mar 2009
Posts: 126
kentucky
K
kyhemi-dart Offline OP
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kyhemi-dart  Offline OP
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kentucky
I’m looking at a trans for my SS Hemi dart that should be in the 900 HP range. I’ve listed the details of the trans. Does this sound like a solid set up for what I’ve got? Anything you would change?


“billet input shaft & hub,alum drum,billet servo's,a&a 5 pinion planetary,a&a rear bearing support,a&a reverse pattern valuebody,a&a sprag,wide front band,all roller bearing transmission, spare case, carbon shield”


The current owner has ran it behind a stout hemi and wedge but his car also weighs 2-300# less than ours. Just looking for input, not a trans guy. Thanks

Re: 727 for SS hemi [Re: kyhemi-dart] #2467665
03/17/18 10:49 AM
03/17/18 10:49 AM
Joined: Dec 2012
Posts: 1,823
Wind Gap,Pa.
S
Sammy Offline
top fuel
Sammy  Offline
top fuel
S

Joined: Dec 2012
Posts: 1,823
Wind Gap,Pa.
Go Billet steel front drum and Ultimate Sprag. red Alto clutches and steels

Re: 727 for SS hemi [Re: kyhemi-dart] #2467667
03/17/18 10:53 AM
03/17/18 10:53 AM
Joined: Oct 2005
Posts: 739
Florida
4
408Dust Offline
super stock
408Dust  Offline
super stock
4

Joined: Oct 2005
Posts: 739
Florida
Call A&A or Protrans.

Re: 727 for SS hemi [Re: kyhemi-dart] #2467675
03/17/18 11:21 AM
03/17/18 11:21 AM
Joined: Jan 2003
Posts: 2,902
A shed in England
Tig Offline
master
Tig  Offline
master

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A shed in England
Over 800ft/lb ? I would go for a heavy duty/billet O/P shaft as well.


'74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials.
9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge.
RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03
Re: 727 for SS hemi [Re: kyhemi-dart] #2467677
03/17/18 11:27 AM
03/17/18 11:27 AM
Joined: Mar 2006
Posts: 9,791
MI, usa
dvw Offline
master
dvw  Offline
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Joined: Mar 2006
Posts: 9,791
MI, usa
Mine runs 9.0-9.1@3350lbs. Just took it apart for inspection. Trans itself has over 600 passes. Currently at 350 passes. The only new parts this go round were a stator support, 2 rings and a filter. What parts are stock; case,pump,input & output shafts,3 pin planet carriers,and servos. Frictions and bands still look nearly new. What parts are modified; lightened sun shell,aluminum drums, aluminum rear clutch carrier, A&A super sprag, torington bearings. I would definitely run the steel front planet carrier if using a brake. I have damaged a stock one, but only one (no trans brake). Current stock piece working fine. If you run a sleeved aluminum front drum I would try Teflon rings on the stator support. Mine is not sleeved so steel rings must be run. The check-up revealed a damage stator support in the rear ring groove along with a ring that was half thickness. Red solid band, 5 thin smooth Alto frictions/Kolene steels in the high clutch. 15 springs set at .075". Rear frictions and steels are stock parts, 3.8 lever, early servo with inner and outer springs. It runs a old Turbo action rev manual valve body. We also run stock input/outputs in Dizusters turbo car with a brake. Close to 850hp@3750lbs on radials. It has broke a aftermarket drive shaft, pinion shaft in the rear axle, but never a trans part outside of stripping a stock front planet. You can build a reliable unit yourself.
Doug

Re: 727 for SS hemi [Re: dvw] #2467682
03/17/18 11:47 AM
03/17/18 11:47 AM
Joined: Mar 2009
Posts: 126
kentucky
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kyhemi-dart Offline OP
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kyhemi-dart  Offline OP
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kentucky
No TQ will only be in the 630-640 range is say. It’ll be a legal nhra ss motor with an older top end..def no shoot out car.

DVW thanks for your input sound like you have awesome luck out of your set up and that’s the reason I’m considering this trans, I know the guy and know it’s not junk. We don’t have to squeeze every ounce of performance just want a solid reliable piece and he priced it super reasonable even if we have to make a few adjustments we will still be ahead

Re: 727 for SS hemi [Re: kyhemi-dart] #2467683
03/17/18 11:50 AM
03/17/18 11:50 AM
Joined: Jan 2004
Posts: 1,468
N.Y.
sixpacksteve Offline
pro stock
sixpacksteve  Offline
pro stock

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Posts: 1,468
N.Y.
900HP with a 727. Good Luck!


Hell Hath No Fury Like Mine
Re: 727 for SS hemi [Re: sixpacksteve] #2467692
03/17/18 12:11 PM
03/17/18 12:11 PM
Joined: Mar 2006
Posts: 9,791
MI, usa
dvw Offline
master
dvw  Offline
master

Joined: Mar 2006
Posts: 9,791
MI, usa
Originally Posted By sixpacksteve
900HP with a 727. Good Luck!

Mines pretty close to 900. Have you broke one at this level? If so what part? By building my own I have paid attention to clearances, wear, and failures. Then adjust as necessary. It gets an easy 100 passes a year, not just the occasional blast. Going on year 6. Every automatic car I've raced since the 80's has had a 727. Only hard part failures I've ever had are a stripped front planet, worn aluminum clutch carrier, reaction shaft worn.
Doug

Re: 727 for SS hemi [Re: kyhemi-dart] #2467730
03/17/18 01:53 PM
03/17/18 01:53 PM
Joined: Oct 2003
Posts: 11,678
W. Kentucky
justinp61 Offline
I Live Here
justinp61  Offline
I Live Here

Joined: Oct 2003
Posts: 11,678
W. Kentucky
What part of KY are you located?

Re: 727 for SS hemi [Re: justinp61] #2467736
03/17/18 02:10 PM
03/17/18 02:10 PM
Joined: Mar 2009
Posts: 126
kentucky
K
kyhemi-dart Offline OP
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kyhemi-dart  Offline OP
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K

Joined: Mar 2009
Posts: 126
kentucky
I’m in Elizabethtown

Re: 727 for SS hemi [Re: kyhemi-dart] #2467751
03/17/18 03:01 PM
03/17/18 03:01 PM
Joined: Jan 2003
Posts: 11,701
Portage,michigan
B
B3422W5 Offline
I Live Here
B3422W5  Offline
I Live Here
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Joined: Jan 2003
Posts: 11,701
Portage,michigan
Originally Posted By kyhemi-dart
I’m in Elizabethtown


Grew up on route 222 in Glendale, many moons ago


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: 727 for SS hemi [Re: kyhemi-dart] #2467753
03/17/18 03:01 PM
03/17/18 03:01 PM
Joined: Oct 2003
Posts: 11,678
W. Kentucky
justinp61 Offline
I Live Here
justinp61  Offline
I Live Here

Joined: Oct 2003
Posts: 11,678
W. Kentucky
I thought so, going to run any races in Paducah this year?

Re: 727 for SS hemi [Re: kyhemi-dart] #2467760
03/17/18 03:26 PM
03/17/18 03:26 PM
Joined: Jan 2003
Posts: 25,618
Rio Linda, CA
John_Kunkel Offline
Too Many Posts
John_Kunkel  Offline
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Posts: 25,618
Rio Linda, CA
Originally Posted By kyhemi-dart



“billet input shaft & hub,alum drum,billet servo's,a&a 5 pinion planetary,a&a rear bearing support,a&a reverse pattern valuebody,a&a sprag,wide front band,all roller bearing transmission, spare case, carbon shield”


If the VB isn't LBA, I'd definitely upgrade to one.


The INTERNET, the MISinformation superhighway
Re: 727 for SS hemi [Re: John_Kunkel] #2467764
03/17/18 03:48 PM
03/17/18 03:48 PM
Joined: Mar 2009
Posts: 126
kentucky
K
kyhemi-dart Offline OP
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kyhemi-dart  Offline OP
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Joined: Mar 2009
Posts: 126
kentucky
Well I grew up in Sonora so very familiar with Glendale!

I doubt we will have the car ready this year, trying but going to be tough. And what exactly is LBA with the VB?? Like I said I’m not a trans guy lol

Re: 727 for SS hemi [Re: kyhemi-dart] #2467770
03/17/18 04:10 PM
03/17/18 04:10 PM
Joined: Dec 2005
Posts: 11,408
Fulton County, PA
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CMcAllister Offline
Mr. Helpful
CMcAllister  Offline
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Posts: 11,408
Fulton County, PA
If you want top shelf stuff, you're going to spend 7-8K plus the converter. Less if you just want something to function and live. Either way, if I didn't know my way around one, I would talk to one of the shops that do them everyday. You can throw some good parts in one, get it put together pretty close and do OK for most applications, but you're in a little bit different situation depending on how up-to-date your combination is.


If the results don't match the theory, change the theory.
Re: 727 for SS hemi [Re: kyhemi-dart] #2467784
03/17/18 04:50 PM
03/17/18 04:50 PM
Joined: Mar 2009
Posts: 126
kentucky
K
kyhemi-dart Offline OP
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kyhemi-dart  Offline OP
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Joined: Mar 2009
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kentucky
We’re just building a glorified bracket car with some 10 yr old fancy hemi heads/intake lol we don’t need a 7-8k trans. I think this trans with maybe some minor upgrades will do us just fine

Re: 727 for SS hemi [Re: kyhemi-dart] #2467874
03/17/18 09:29 PM
03/17/18 09:29 PM
Joined: Mar 2006
Posts: 9,791
MI, usa
dvw Offline
master
dvw  Offline
master

Joined: Mar 2006
Posts: 9,791
MI, usa
LBA (low band apply) applies the rear band along with the sprag (low roller clutch) to help hold the rear drum. If the sprag lets loose the forward drum can go to 14,000+rpm. I have used both. I like the old style non LBA better as the 1/2 shift is cleaner. I would recommend a good aftermarket front drum either way. I've run both aluminum and aftermarket steel front drums. My preference is for the lighter aluminum piece. For me wear on the aluminum drum has been a non issue as well. Top shelf doesn't necessarily mean stronger. More like lighter and quicker.
Doug

Re: 727 for SS hemi [Re: dvw] #2467888
03/17/18 10:34 PM
03/17/18 10:34 PM
Joined: Jan 2004
Posts: 1,468
N.Y.
sixpacksteve Offline
pro stock
sixpacksteve  Offline
pro stock

Joined: Jan 2004
Posts: 1,468
N.Y.
Doug, i glad you had great luck. i've been thru aleast a dozen 727 trans, i have 200 less HP and a coan trans now. has been rebuilt several times.
I personally believe if you go more than 600+hp 727 Not the way. Im happy for the guys that have been.


Hell Hath No Fury Like Mine
Re: 727 for SS hemi [Re: sixpacksteve] #2467895
03/17/18 10:48 PM
03/17/18 10:48 PM
Joined: Jan 2005
Posts: 2,540
Milwaukee WI
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TRENDZ Offline
master
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Joined: Jan 2005
Posts: 2,540
Milwaukee WI
Originally Posted By sixpacksteve
900HP with a 727. Good Luck!


1100 hp in a 3700lb car for me. A&A built 727 with a Dynamic converter. Had $5200 into trans/ converter. Had two failures. one transbrake solenoid, and broke a tailshaft housing when a rear end broke. Very trouble free considering the power and weight. Guessing around 200 passes before selling the car.


"use it 'till it breaks, replace as needed"
Re: 727 for SS hemi [Re: kyhemi-dart] #2467908
03/17/18 11:19 PM
03/17/18 11:19 PM
Joined: Sep 2005
Posts: 1,550
baldwinsville new york
A
a493demon Offline
pro stock
a493demon  Offline
pro stock
A

Joined: Sep 2005
Posts: 1,550
baldwinsville new york
i'm at 1200+ hp and have a 727 with no issues

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