early 4l80e to 6.0?

[Supercharged111]

Because they did a hack job.

 

[joe yuhaus]

You didn't read my post at all. It will shift fine for a legless TBI engine. It's going to suck for a 6.0. TBI shifts around 4500 WOT, 6.0 wants 5500. Everything under the curve will be skewed too. You'll need to flash a chip for the TBI computer to correct the shift points for the 6.0.

and if it really comes to that I'd go with a stand alone controller before a TBI chip. lots of guys have to mail them back several times to get a good one.

 

[Supercharged111]

and if it really comes to that I'd go with a stand alone controller before a TBI chip. lots of guys have to mail them back several times to get a good one.

Which is EXACTLY why the 411 makes more sense. Period.

 

[David Cruz]

Just answered this in another post, from what I've seen you need VSS, Coolant Temp, TPS, and a Tach signal. Going carbed on an HT502 with 4L80E in a SAS K2500 suburban. I'll know for sure in the next couple weeks if the trans will be happy with those sensors.