supermaro

iTrader: (58)

I just purchased a fairly low mile 4L80E from a 2008 express Van. I'm planning on installing it in my 07 TBSS. Should I install a transgo HD shift kit? If so does anyone have a part number, the ones I keep finding stat
1991-2001. Thanks

06murder

It would help you out if you have big power plans.

06murder

May wanna try jakes performance. Transmission

03sierraslt

iTrader: (22)

If you do not plan on taking it apart then I would at least do the shift kit.

DUALLS

Just did mine yesterday. Can't believe I waited so long!

supermaro

iTrader: (58)

Does anyone have the correct part number? Only one I could find is
TRG-4L80E-HD2 on summit and other vendors. But it states that its only for 91-01 4L80s.

slammedsilvy

iTrader: (3)

That's the right number, I used it on my 03' without issue.

supermaro

iTrader: (58)

Shift kit ordered, thanks guys.

Also what power levels are these stock 4L80s good to?

Suburbazine

Lots of power. Depending on how well it was built, 700hp is feasible on a stock 80e. After that the shafts need upgrades.

A shift kit in an 80e blows away a 60e shift kit. I am chirping the tires on stock 80e line pressures.

06murder

My cousin runs a stock 80e with shift kit. And has a cammed 6.0 fbo's with a 200 shot and still beating on it.