with a shift kit installed . . . it's night and day difference in just the shifting . . . not just the firmness, but how quick it shifts - and this can't be done with just a tune
you can hold any gear at any rpm, at any time - with out a tune . . .
not to mention the hardened plate that it comes with will last longer than the stocker with the higher line pressures.

sure a tune can make you chirp your 1-2 shift all day long, or make it shift harder . . . but in the end, the shift kit will make it last longer with the upgraded springs and valves

 

The 4L70E already has a Vette servo in it....one of the upgrades from the 4L65E.

Since I don't know what other upgrades from the 4L60E HD2 shift kit may already be in the 4L70E, I suggest you call Vince from FLT or better yet, call Transgo directly. They've always been helpful to me when I've called.

 

the NNBS have the 65E/70E . .which is the same thing. only a couple of upgrates of difference. . and the shift kit does fit*

 

i highly recomend a true cool 40k cooler .. the clutches tend to burn /

 

what tranny cooler do you guys recommend for a 5.3 4speed?
intake/exhaust/vette servo/ tune to come later

 

this one . .. .

 

This is the first I have heard this. Is this true? Can someone confirm?

 

I just put one in my 4l70E . It does not come with a Vette servo.

 

Okay, my bad. The crate 4L65E I ordered a few years back already had one in it, so I assumed the 4L70E did as well. Should have know with the 'assume'.....