1972 freak

My 1972 Corvette has the original thm400 (38000 miles)but shows some problems.
In drive and low gear an unpleasant slipping noise comes from the transmission (or converter) at 1700 rpm if starting from zero.
I performed a so called stalltest (brakes on and accelerator to floor for some seconds) From 1700 rpm a yelling sound from transmission.
In reverse no any problem or noise, but engine rotates 2100 rpm. I think that is a lot!
Engine: standard 200 hp
Converter:o260o290 12o PJ7 RR

Oil is very clean, no deposits. I changed both oil and filter: no influence!

What can be wrong? Why do I have such a high stall rpm? Do I have to revise the whole transmission?

Please technicians try to help me

Kees

cagroeneweg@zeelandnet.nl


[Modified by 1972 freak, 8:37 PM 9/19/2003]

Smokehouse69

I don't have a clue, If I had to guess I'd guess that either your torque convertor has croaked or you have a stuck valve in in the body and aren't developing enough pressure inside the tranny. My reply was actually just to help you bump it to the top!
Welcome to the Forum.

1972 freak

Thanks for your help Smokehouse 69 :seeya