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kjones6039
New User
May 31, 2012, 12:43 AM
Post #1 of 3
(518 views)
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700r4 TCC woes
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I posted this on another forum but got no responses. Perhaps I will have better luck here.......
Long story as short as possible......
Bought a 700r4 about a year ago (from a company i won't name right now) to go behind a 383 in my 79 Corvette. This is a Sunday driver and occasionally gets a workout at the drag strip.
About a week after I installed it I broke the band anchor. Instead of shipping it back I elected to replace the anchor and get back on the street. (of course that voided the warranty)
I replaced the anchor and all has been well since last year. Recently I took a road trip (about 500 miles) and found that the converter clutch (when locked) is slipping under moderate throttle in 4th gear. Note: I have the ECU programmed to allow lockup in 4th gear only.
I pulled the transmission over the weekend and the internals look fine, reenforcing my belief the the TCC is to blame for the slippage.
NOW, today as I was looking at the input shaft I noticed that the check ball capsule is NOT installed in the pocket on the shaft. It is my experience that this is done in NON lockup transmissions. (along with a plug in the pump body IIRC)
I'm guessing that they sold me a non lockup transmission with a locking converter.
Any of you 700r4 guys want to weigh in on this one?
Ken
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
May 31, 2012, 5:03 AM
Post #2 of 3
(468 views)
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Quick look - there were no 383 OE engines for this. It's altered, beat on at drag strip and not surprised you are not getting much help on the web.
Perhaps you have a typo there but may need a trans specialty shop to check this out in person IMO,
T
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Long retired now
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