Author Topic: Calling Terry-tactransman  (Read 1279 times)

Offline Rare_T_A

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Calling Terry-tactransman
« on: August 16, 2007 - 07:02:23 PM »
I have a tech question about the 727 in my T/A. When I first start the car I have to put the trans in N and let it run for a while before it will go in gear. It got worse after I put in a 4000 stall convertor. Once it's pumped up it shifts rock hard. Just slow cruising it will skwack the tires on 1-2 shift and if I'm on it it does the same on 2-3 shift. I live with it but I was wondering if you had a guess as to what would be wrong if anything? Also I've put in several front seals and the last one was 2 years ago and it's leaking again. Any help would be gladly taken!!

This is the trans I have in the car. The tag says B&M Racing Transmittion and has a serial number.
'09 Challenger R/T  5.7 HEMI Auto
'70Challenger T/A 340 727

Fargo, N. Dak.
My web Site:  http://freiss.co.nr

My Flikr Page: http://www.flickr.com/photos/102813164@N04/

I was born with nothing and I still have most of it left!




Offline GoodysGotaCuda

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Re: Calling Terry-tactransman
« Reply #1 on: August 17, 2007 - 04:55:25 AM »
I'm not terry, but if you let it sit for a couple days between running the torque converter fluid will drain back into the pan. It won't move until you let it sit in N for a little bit due to the fact in Park it won't pump fluid through the converter and fill it back up.  Where is it leaking from??
Build Page: Goody's 'Cuda Build Page
1976 Dodge Warlock
1972 Barracuda - 5.7 Hemi + T56 Magnum

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Offline tactransman

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Re: Calling Terry-tactransman
« Reply #2 on: August 17, 2007 - 07:37:26 AM »
Like Mike said,it is probably drain back. I would get a different valve body and put a Transgo shift kit in it.Transgo addresses the drain back problem by charging the converter in park,B&M doesn't. It probably got worse after the stall converter change because the pump bushing to converter hub clearance is more now due to the size of the stall converter hub. Think of the drain back like this;do you remember the old oil cans that you had to puncture a hole in 'em to get the oil out? Well you always punched a second hole to let the air in so the oil would come out faster,the clearance of the hub to pump bushing is the other hole,the more clearance the quicker it drains down. In short the drain back doesn't hurt anything,it is just annoying.  :cheers:

Terry aka tactransman

P.S. front seals hardly ever leak on their own,something usually makes them leak,cracked converter hub,leaking converter weld,worn pump bushing,porosity in the case or maybe it is the pump "O" ring.
« Last Edit: August 17, 2007 - 07:40:54 AM by tactransman »
Terry-tactransman 
Torqueflite/Automatic Transmission Specialist
Union, Mo.
Give a man a fish and he eats for a day,teach him to fish and he eats for a lifetime.

Offline Rare_T_A

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Re: Calling Terry-tactransman
« Reply #3 on: August 17, 2007 - 10:32:30 AM »
Thanks for the insite. I guess I'll just live with it. It really dosn't bother me, just some times it would be handy if you could start it and through it in gear and go. I suppose if I took it back to stock it would work that way. NAAA I like it this way much more!!
'09 Challenger R/T  5.7 HEMI Auto
'70Challenger T/A 340 727

Fargo, N. Dak.
My web Site:  http://freiss.co.nr

My Flikr Page: http://www.flickr.com/photos/102813164@N04/

I was born with nothing and I still have most of it left!

Offline tactransman

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Re: Calling Terry-tactransman
« Reply #4 on: August 17, 2007 - 10:52:51 AM »
I suppose if I took it back to stock it would work that way. NAAA I like it this way much more!!
Nope,stock is the way it is now (as far as fluid flow goes) Just drive it and have fun with it. :grinyes:

P.S. I LOVE YOUR CALENDER ENTRY PIC!  :clapping:
Terry-tactransman 
Torqueflite/Automatic Transmission Specialist
Union, Mo.
Give a man a fish and he eats for a day,teach him to fish and he eats for a lifetime.