30th t/a

iTrader: (51)

Ok I found a 4L80e that has 80k on it. What would you guys reccomend replacing for it to handle 650 HP?

Also does anyone know how much power/TQ these 4L80e were meant to handle from the factory?

TTS

875 with dual feed direct. Put a SK in it, freshen it up, call it good.

30th t/a

iTrader: (51)

Ooook anybody else

Has anybody running a stock 4L80e & convertor in their Fbody?

SVT THIS

iTrader: (27)

I ran a stock 4L80e with a 3500 Vigilante stall converter and a Transgo HD shift kit. The transmission had about 60k on it when I put it in. With the motor in my sig, it seriously lasted no more than 3000 miles, probably more like 1500 miles. If I were you, while the transmission is not in the car-do it right so you don't **** yourself later.
Here's what I'd do if I were in your shoes..
Upgrade the clutches, pwr packs for forward, intermediate n direct clutches. I upgraded my front and rear bands, sprag, overdrive/overrun clutches and went full manual.

At the very least upgrade clutches, sprag and put in a transgo HDII shift kit

30th t/a

iTrader: (51)

Thanks for the good advice! this is what I was looking for.

TTS

1. It will handle 875hp

2. Install a Shift Kit. Transgo HD2

3. Freshen it up. Inspect and replace any damaged part. Rebushing and seal.

4. Call it good. The above steps are all you need, unless you make 900hp.

I wouldn't ever suggest a stock converter in any situation. 4L80's are truck transmissions and the OE converter is for hauling, not hauling ***.

Beaflag VonRathburg

iTrader: (176)

^ Elaborate on "dual feed direct".

30th t/a

iTrader: (51)

Thanks for clearing that up for me.

trans2000am

iTrader: (49)

any news

30th t/a

iTrader: (51)

its at the shop right now getting rebuilt. the guys says ill be good for 1000hp. I went with the SC3000 by Yank. Nice & tight for the street

99ccz28

iTrader: (6)

Who are you getting to rebuild the tranny?

30th t/a

iTrader: (51)

Tom Stottish in Butler

99ccz28

iTrader: (6)

Oh, he is good from what I hear. I heard from Chris his arm was screwed up and he really wasn't doing much. That was a while ago though so I guess he is better.

30th t/a

iTrader: (51)

Yea, Diane's auto reccomended him and I know they do some pretty serious cars.

99ccz28

iTrader: (6)

You're kidding right? You called Diane's auto? Oh gees. You should have talked to me before that! Whatever you do, DO NOT have any kind of work done by Ralph at Diane's! Just trust me on this. They don't do serious cars.

30th t/a

iTrader: (51)

yea yea I remember what you said about them. Im not having them do anything to my car.

trans2000am

iTrader: (49)

whats getting done to the trans (parts getting upgraded) and how much trying to see if it worth doing a 4l80e rebuild or go th400 just not have OD

30th t/a

iTrader: (51)

trans2000am, I can get the specs when I (hopefully) pick the tranny up this week. He rambled off everything hes doing to it but I cant remember all of it.

socmguy

iTrader: (18)

There's a local shop around here that ran mid 10s in their LS2 TB w/ a bone stock 4l80e