It was rebuilt with set of heavy dutie clutches... I like it!
tranny Question
Thread Starter
Racer
Joined: Oct 2006
Posts: 305
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From: Hilmar Ca
tranny Question
I have a late 86 corvette with auto tranny. I just rebuilt the motor and then 3 thousand mile late the tranny went out! 
Third slips very bad and overdrive is complitely gone! I did beef up the car a little bit... The car has 212XXX miles on it! Was it an extra ponnies that made the tranny go or do you guy/gals think it was do to wear??? How much horsepower can the stock tranny handle?
Third slips very bad and overdrive is complitely gone! I did beef up the car a little bit... The car has 212XXX miles on it! Was it an extra ponnies that made the tranny go or do you guy/gals think it was do to wear??? How much horsepower can the stock tranny handle?
Race Director
Joined: Feb 2004
Posts: 12,518
Likes: 19
I have a late 86 corvette with auto tranny. I just rebuilt the motor and then 3 thousand mile late the tranny went out! Third slips very bad and overdrive is complitely gone! I did beef up the car a little bit... The car has 212XXX miles on it! Was it an extra ponnies that made the tranny go or do you guy/gals think it was do to wear??? How much horsepower can the stock tranny handle?
Third slips very bad and overdrive is complitely gone! I did beef up the car a little bit... The car has 212XXX miles on it! Was it an extra ponnies that made the tranny go or do you guy/gals think it was do to wear??? How much horsepower can the stock tranny handle?
Le Mans Master
Joined: Dec 2004
Posts: 5,488
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212,000 miles on an origional trans is exceptional. They usually die of old age exactly as you describe. 3-4 clutch pack is normally the first to fail. There are many proven recipes for rebuilding and upgrading a 700r4. Consult your rebuilder and seek his advise. You can easily and somewhat inexpensively build them to hold 450 hp and 450 ft lbs.
Team Owner
Joined: Nov 2000
Posts: 45,085
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From: I was a young troubadour when I rode in on a song, and I'll be an old troubadour when I'm gone.
St. Jude Donor '08
It's doubtful the extra power fried your transmission.
But it gave you an awesome 212,000 miles of use.
You can only hope your next transmission lasts even close to that long.
But it gave you an awesome 212,000 miles of use.
You can only hope your next transmission lasts even close to that long.
Race Director
Joined: Jun 2004
Posts: 13,957
Likes: 706
From: WI
I had a similar problem and it was a bad TV cable, plus high heat making varnish in the valve body. Drop the pan and see what is in there. I found it free of metal so dropped the valve body and found debris in it. All it cost was a TV cable (it would not adjust) and some ATF. I did put a shift kit while I was there.
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From: Salem NH
Intermediate
Joined: Feb 2007
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I have te same problem on my 1995 LT1.
Pete K, was very nice and gave soem info about trans.
Tell me what kind of heavy duty kit you used? And where did you get it?
Thanks
Batyrkhan
