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727's and 1000 ft / lb plus? #1388296
02/16/13 06:05 AM
02/16/13 06:05 AM
Joined: Jan 2003
Posts: 2,923
A shed in England
Tig Offline OP
master
Tig  Offline OP
master

Joined: Jan 2003
Posts: 2,923
A shed in England
As the thread implies, what do I need for inside a 727 for survival and reliability at that level?
Any experiences?


'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's and 1000 ft / lb plus? [Re: Tig] #1388297
02/16/13 10:14 AM
02/16/13 10:14 AM
Joined: May 2011
Posts: 4,489
northern,Ohio,USA
C
Clanton Offline
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Clanton  Offline
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C

Joined: May 2011
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northern,Ohio,USA
A super sprag like a COAN.


GOTBOOST!New improved with Victor heads.
http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/
Re: 727's and 1000 ft / lb plus? [Re: Tig] #1388298
02/16/13 11:25 AM
02/16/13 11:25 AM
Joined: Dec 2006
Posts: 235
Tucson AZ.
RADAMX Offline
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RADAMX  Offline
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Posts: 235
Tucson AZ.
Only thing I have ever broke was I took the splines out of an aluminum planet gear assembly. replaced with steel spline and never had a problem .
Of course you need a bilit drum ,A low band apply valve body. As said a sprag. I also run the roller rear drum but I don't think it is a must.

3345 lbs and just over 1000 ft tq

Oh ya a good convertor .

Good luck

Re: 727's and 1000 ft / lb plus? [Re: Tig] #1388299
02/16/13 11:34 AM
02/16/13 11:34 AM
Joined: Jul 2010
Posts: 3,502
SOUTH JERSEY
HEMIFRED Offline
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HEMIFRED  Offline
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Posts: 3,502
SOUTH JERSEY
a trans blanket


home of the
Sox and Martin Hemi Duster


Re: 727's and 1000 ft / lb plus? [Re: Tig] #1388300
02/16/13 12:38 PM
02/16/13 12:38 PM
Joined: Jan 2003
Posts: 10,000
Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline
I Live Here
gregsdart  Offline
I Live Here

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Posts: 10,000
Frostbitefalls MN (Rocky&Bullw...
Monty, a nitrous racer that used to post on hear said he started breaking output shafts at about that level. It is possible that the torque he had was higher than that due to the nitrous.


8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
Re: 727's and 1000 ft / lb plus? [Re: HEMIFRED] #1388301
02/16/13 07:51 PM
02/16/13 07:51 PM
Joined: Feb 2003
Posts: 911
London, England
mopar_mark Offline
super stock
mopar_mark  Offline
super stock

Joined: Feb 2003
Posts: 911
London, England
Quote:

a trans blanket



Sharp as ever Fred

Tig,
There a few folks I have read or spoken too, that have had success with High Hp/Torque combos running 727's. Even with the best of parts, they seem to all need regular maintenance or consistently need to be checked over.

Last edited by mopar_mark; 02/16/13 07:52 PM.
Re: 727's and 1000 ft / lb plus? [Re: mopar_mark] #1388302
02/17/13 12:55 AM
02/17/13 12:55 AM
Joined: Dec 2007
Posts: 12,587
Great Neck,LI,new york
hemi-itis Offline
I Live Here
hemi-itis  Offline
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Posts: 12,587
Great Neck,LI,new york
And I'm still pushing buttons

7591327-3.24.12(16).JPG (60 downloads)

HEMI-ITIS has no cure.
My condition is fully BLOWN!!
Re: 727's and 1000 ft / lb plus? [Re: hemi-itis] #1388303
02/17/13 01:44 AM
02/17/13 01:44 AM
Joined: Sep 2010
Posts: 344
Indiana
Gabby63 Offline
enthusiast
Gabby63  Offline
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Joined: Sep 2010
Posts: 344
Indiana
I hate to say it but I miss those days , I never had an issue with missing gears , CO2 bottle going empty , I actually liked to use the push buttons . But I wanted to update to the newer stuff .... you know the story . Gary

Re: 727's and 1000 ft / lb plus? [Re: Gabby63] #1388304
02/17/13 08:39 AM
02/17/13 08:39 AM
Joined: Jan 2003
Posts: 2,923
A shed in England
Tig Offline OP
master
Tig  Offline OP
master

Joined: Jan 2003
Posts: 2,923
A shed in England
Hi, thanks for the replies
I have some good stuff in it at the moment. Billet drum, 5 pinion steel planetary (front), bolt in sprag (standard # of elements though) LBA MVB etc etc.
I was going to add H/D or billet I/p and O/p shafts and hope for the best.
I don't mind the maintenance, how often were they pulling it apart Mark? That having been said, I just rebuilt mine after 4 seasons and it didn't really need it. The current motor is not into 4 figures though.
Do I need to do more?
I'd rather not go to a th400
TIA.
Tig


'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






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