Is there any mod that I can do to my 400 turbo trans ,, When you hold it in first and try to hold it is shifts on its own ,, Just as its makeing power it shifts,,, Can I fix this with out putting a man vavle body in it,,,????? It in my truck not the buick,,,,
Thanks for any and all the help,,,,
Seneca Lafler
Thanks for any and all the help,,,,
Seneca Lafler