I have a 4l60e trans in a 95 chevy truck with a supercharged super ram 383 running around 500 HP for now the trans was built about 3 months ago with high strength parts. the company said they run this trans behind 650-700 HP and it does well but mine just started to miss 3rd at full throttle when it gets to 5500 and goes to shift it feels like neutral for about 500 RPMs sometimes as much as 1000 then grabs 3rd when it first started doing it it would only happen when I got on full throttle from first all through second then it would miss 3rd now it will sometimes work normal but I can't seem to find what makes it only work somtimes the trans is under worenty but the company is in Ohio and I have to ship it from Las Vegas. so has anybody had this problem or does sound like a valve body problem or could it be in the wiring or computer? any help at all will be helpfull
Thanks