727 Tranny help

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Jul 3, 2008 | 05:45 PM

#16

Bigdogbandal

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From: porterdale, GA

I had a 85 chevy diesel with a 6.2 for a while. It had a 700r4 in it and I found out that the 700 is dollars it costs to rebuild and the 4 is how many times a year I had to rebuild it. I'm betting you didn't get the torque converter onto the third stage and ate it up when you started it.

Jul 4, 2008 | 12:29 AM

#17

Crossy's son

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From: Quinton, New Jersey (middle of nowhere)

700R4 could'nt live behind a 305 tbi v8. and there not cheap to beef up. go with the 4L80E. its a th400 bulletproof trans with a overdrive. good trans.

Jul 4, 2008 | 07:38 AM

#18

Mcmopar

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From: Raleigh, NC

I would drop the tranny and see if you did shear the lugs on the pump, these are not to hard to rebuild, and the pump is even easier.

Jul 4, 2008 | 08:31 AM

#19

txs

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1st thing I would do is put a gauge in the line pressure port and see if it makes any pressure in drive, if you have low or no pressure then it's time to pull the tranny. The line pressure port is on the passenger side in the middle of the case angled toward the front, it's the second one back, there is another one close to the fill tube, that is front clutch port.

Jul 4, 2008 | 08:45 AM

#20

dieselJon

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From: Dixon, IL

So which is it? The TC or the tranny??? I thought the TC did all the pumping, then again, I have been wrong before..

Jul 4, 2008 | 08:51 AM

#21

dieselJon

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From: Dixon, IL

Also, where do I get the parts to rebuild it?

Jul 4, 2008 | 09:03 AM

#22

txs

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the only way the torque converter makes pressure is the shell of it drives the inner pump rotor by way of the 2 notches in the hub that engage the 2 drive lugs on the rotor.

Sep 8, 2009 | 07:49 PM

#23

Mcmopar

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From: Raleigh, NC

Did you rebuild the VB yourself?

Sep 9, 2009 | 12:06 AM

#24

dieseldawg604

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From: B.C. canada

Quote:

Originally Posted by dieselJon

txs, if that is the case, then how do I check it?

I put the TC on the shaft, pushed it as far back as possible, bolted the tranny to the engine, bolted the flexplate to the TC.

The linkages are fine and adjusted right.

I hope it is not the TC.

ANyone know where to get a good converter for under $500???

Jon

you spun the converter back and forth right?????
it made a few definite clunks right?????