New flexplate and tc wobble.

[rhinoblzr]

I have the th400 service manual. Im going to look up the "converter feed"to see what your talking about.

 

[rhinoblzr]

Found some regulators that people say work really good for line pressure.

 

[Hogback Fabrication]

You won't find reference to it in there. And if you call the companies that make the full manual valve bodies, they'll tell you not to mess with it.

I killed a brand new 6.0L LS last year from it, if you google the problem you'll find a ton of people with the same issues (unfortunately it seems to be more of a "fix after it's broken" deal more than "keep it from breaking")

 

[rhinoblzr]

Man, thanks so much for the line pressure comment. Seems to be a huge problem for everyone.

 

[rhinoblzr]

Sorry about your ls thats sucks big time. Definetly sqauring this tranny up before i start the engine with new bearings

 

[rhinoblzr]

Found this fix online. What do you think?

Drill the existing hole to 21/64".
Tap the drilled hole with a 1/8 npt tap.
Install a 1/8 npt allen pipe plug.
Drill an orifice hole through the pipe plug. 7/64" is a good size. Do not go to small this will cause cavitation.
Draw a file across the face of the pump cover to knock down any raised metal caused by the orifice installation procedure.

 

[Hogback Fabrication]

That's the right idea, but there isn't a set size for everyone. The pump condition/pressure and even more-so, the cooling system backpressure factor in. Regardless, if it's wide open now with full pressure, it's WAY too much. My restrictor is set at ~.107" I think.

 

[rhinoblzr]

Ok thanks. I found a good explanation online. So stoked you mentioned it. Other trans have a restrictor to 90 psi. Guess they learned from the th400 mistake lol

 

[rhinoblzr]

Tee'd into my lower trans cooler line to check the charge pressure. When i say idle thats park. (Vid below) does the pressurelook ok? Sorry about the car alarm. They get scared from my exhaust lol.

Doing a compression test then pulling the engine out to check my bearings.

 

[Hogback Fabrication]

Pressure is fine there

 

[rhinoblzr]

Awsome thanks, one less thing to worry about. Compression is 165 across the board. Looks like i might only need to do bearings. Find out when i flip her over.

 

[rhinoblzr]

Finally got the engine out. Heres the crank walking. Maybe tear into it in a day or two.

 

[Fastereddie]

No migusta...

 

[frankin5]

Looks like bad thrust bearing.

 

[rhinoblzr]

Yeah, this crank is destined to become a coffe table or somethin. Ordering a new one.

 

[rhinoblzr]

Update. Finally Got a 5.3 to throw in. Looking for cam options.