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Old 11-02-2009, 09:58 AM
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82 Corvette Trans Issue 700R4 (Long Post)

I was recommended to you by one of the guys at the Corvette forum. I have had a passion for Corvette's since I could remember and my Father having 3 of them growing up (62,65,70) helped fuel the interest. Since the early 90's I have taken to buying them tinkering and selling to support my vette habit. I worked for Chevrolet when I got out of school and became very familiar with the C3, & C4 makes. I just bought one of the nicer C3 Corvette's I've ever owned. I purchased a 1982 Cross Fire Corvette with 41,000 miles and its a 2 owner car. The market is really down now and the economy is exposing some really nice buys all over the country. The car has a transmission (700R4) issue. I have read a lot of your threads with respect to T V Cable Adjustment and the 3/4 clutch pack being the culprit but was wondering are any of these situations not terminal??? All scenarios that I have read all end the same way. Time to Rebuild or Its only a matter of time….I'm hoping some adjustment could be made to save it??? It drove home from Boston to NJ Last Sunday (5Hrs.) with only a little issue….Here my scenario. From a dead stop car holds 1st gear till 2800-3000 RPM before shifting to 2nd then stacks 3rd on top (quickly depending on throttle position)and loaps a little before going to 4th and then downshifts down to 2nd or 3rd up till about 100MPH…..and then neutral's out around turns….I checked the fluid and added 1 quart and it helped a little. Have read a few different things on levels…Some say take the fluid level when running others claim when car is off and hot….I know you can't waive your magic wand and fix it just wanted some real facts as I know you are knowledgeable and have significant experience

Respectfully,
kdr3

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Old 11-02-2009, 10:26 AM
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Well I'm not a 700R4 guy so I can't help you much technically, but two things I can tell you:

> you want to check fluid level with the motor running, tranny in park and warmed up. The reason for this is with the motor off, about half the fluid in the converter drains back into the tranny, giving a false high reading. Fluid level should be even with the pan rail when running.

> check that the little collar on the tranny dip stick has not slipped. If it is loose or has slipped, you could be getting a false high reading.

Good luck!

Lee
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Old 11-04-2009, 02:38 PM
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Thanks Lee...Will Do...........
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Old 11-04-2009, 03:54 PM
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Do a search on both here and the internet.I took some classes on the 700r4 at a gm school years ago.They have had many case problems on early model 700 and don't recommend repairing pre 1984 trans unless it is a numbers matching deal.
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Old 11-04-2009, 04:04 PM
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Bad news is 82 was the first year for the 700r4 which revieled to be problematic. It wasn't till 88 most of the bugs were worked out I think it was 170 engineering changes from 82 to 88. I would find a later trans and be done with it.
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