727 Diagnosis needed- give me your 2 cents *DELETED* *DELETED*
#686675
05/02/10 05:43 PM
05/02/10 05:43 PM
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Joined: Apr 2008
Posts: 423 DFW Texas
AHall
OP
mopar
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OP
mopar
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not needed now- its toast
Last edited by AHall; 05/04/10 11:07 PM.
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Re: 727 Diagnosis needed- give me your 2 cents
[Re: StukaJU87]
#686680
05/02/10 07:02 PM
05/02/10 07:02 PM
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Joined: Apr 2008
Posts: 423 DFW Texas
AHall
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mopar
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OP
mopar
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welp, if that is the case, what does a good performance shop charge to rebuild a 727? $1000? $1500? Ugh, if its not one thing its another. (not concluding that is it, just speculating in order to prep the wife)
Last edited by AHall; 05/02/10 07:02 PM.
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Re: 727 Diagnosis needed- give me your 2 cents
[Re: AHall]
#686682
05/02/10 10:37 PM
05/02/10 10:37 PM
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Joined: Nov 2006
Posts: 1,457 oklahoma
forphorty
pro stock
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pro stock
Joined: Nov 2006
Posts: 1,457
oklahoma
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Re: 727 Diagnosis needed- give me your 2 cents
[Re: forphorty]
#686683
05/02/10 10:47 PM
05/02/10 10:47 PM
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Joined: Dec 2004
Posts: 267 mpls,MN
dodgedakotaman
enthusiast
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enthusiast
Joined: Dec 2004
Posts: 267
mpls,MN
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Do you have the trans kickdown linkage hooked up and if so is it adjusted correctly? This can make a big difference. Make sure the kickdown lever moves freely. They like to get stuck and not move. Then the trans will shift funny.
Last edited by dodgedakotaman; 05/02/10 10:50 PM.
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Re: 727 Diagnosis needed- give me your 2 cents
[Re: dizuster]
#686685
05/02/10 10:57 PM
05/02/10 10:57 PM
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Joined: Apr 2008
Posts: 423 DFW Texas
AHall
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Quote:
Man the thing sounds like a ski-boat.
Are you sure it was in 1st gear?
Sounds like it was just up flashed on the converter in high gear. The motor never really rev's up...
I was in "D"
It was revved up, it hit 5k rpm on that quick acceleration.
If I were to get the 727 rebuilt- are there any mods I should have done to it, or a shift kit installed or just go back with a stock rebuild? 440 is mild, just a cam and heads I'd say 480hp.
How can I tell if my kickdown linkage is stuck? On 2nd thought I don't think that's it- its felt like this for 2 years now.
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Re: 727 Diagnosis needed- give me your 2 cents
[Re: AHall]
#686686
05/03/10 08:04 AM
05/03/10 08:04 AM
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Joined: May 2003
Posts: 15,487 Florida
scratchnfotraction
I Live Here
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I Live Here
Joined: May 2003
Posts: 15,487
Florida
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sounds like it was slipping to me.. also sounds like the TC is to high on stall also why so much? I would use a tight 3000 stall from turbo action
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Re: 727 Diagnosis needed- give me your 2 cents
[Re: scratchnfotraction]
#686687
05/03/10 08:15 AM
05/03/10 08:15 AM
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Joined: Apr 2008
Posts: 423 DFW Texas
AHall
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OP
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Quote:
sounds like it was slipping to me..
also sounds like the TC is to high on stall also
why so much?
I would use a tight 3000 stall from turbo action
It's a hughes 3000 stall
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Re: 727 Diagnosis needed- give me your 2 cents
[Re: AHall]
#686690
05/03/10 08:39 AM
05/03/10 08:39 AM
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Joined: Dec 2009
Posts: 1,074 detroit, mi
POS Dakota
super stock
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super stock
Joined: Dec 2009
Posts: 1,074
detroit, mi
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Quote:
question-
ON a 727 rebuild- is it simple enough a regular(local) transmission shop can rebuild it or would you take it to a performance transmission specialist?
If ANY trans shop can't rebuild a 727 they have no business owning a shop.
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Re: 727 Diagnosis needed- give me your 2 cents
[Re: AHall]
#686692
05/03/10 09:27 AM
05/03/10 09:27 AM
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Joined: Apr 2010
Posts: 1,216 Under My Car
Mopar_Country
pro stock
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pro stock
Joined: Apr 2010
Posts: 1,216
Under My Car
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Sure sounds like it is slipping. If the car has been doing that since you got it, it could be that the kickdown linkage has always been out of adjustment and needs adjusting. I would start with that. You could be putting "just" enough pressure into it to make it seem kinda normal. At WOT make sure the lever on the trans is all the way back. If that seems to improve it some, next I would call a reputable torque converter company and give them your cam specs and see what they recommend for a torque converter. 3000 seems high to me. If your running a mild cam I would think a stock stall or maybe 2200-2400 would be sufficient. There are a multitude of factors, car weight, cam (power band), rear gears, and of course usage. IF it is going to be mostly a street car then in my opinion 3000 is to high. In 1973 Chrysler pushed the limits, much to everyone's suprise, when they put a higher stall converter in production vehicles which was still less than 3000. A given torque converter may stall at 2,500 rpm behind a small block with 300 lb-ft of torque, but provide 3,000 rpm before reaching stall speed behind a 440 which belts out 450 lb-ft of torque at stall rpm. It varies.
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