did segment swap to 4l80e have a question

[Cool28]

ok i did the segment swap changed shift time to that of the 4l60e and change shift rpm. question is do i have to play with part throttle shifting or is there another way to get that stuff right?

[joecar]

The gear ratios are different, so you have to make sure the PT shift tables are sane with regards to the RPM's;

i.e. for each cell, what is the RPM that corresponds to that MPH;

if you got the speedo entered correctly, the tunetool tells you the RPM for each MPH.

[Cool28]

Ah ok I see it now it adjusts it for ya that's sweet. They look pretty close also changing the rear gears.

[johnv]

You don't actually need to do a segment swap, you can run the 4l80e on a 4l60e program with some wiring changes.

[joecar]

Yes, what johnv said is correct, see here:


...
4L80E Swap:
showthread.php?13090-4l80e-4th-gear-and-tcc-problem (http://forum.efilive.com/showthread.php?13090-4l80e-4th-gear-and-tcc-problem)
showthread.php?13449-06-gmc-truck-os-swap (http://forum.efilive.com/showthread.php?13449-06-gmc-truck-os-swap)
showthread.php?13722-Stop-TCC-unlock-when-coasting (http://forum.efilive.com/showthread.php?13722-Stop-TCC-unlock-when-coasting)
showthread.php?13891-4L80-E-3-2-shift-solenoid (http://forum.efilive.com/showthread.php?13891-4L80-E-3-2-shift-solenoid)
showthread.php?13644-4L80E-swap-into-2006-6.0L-truck-with-4L60E (http://forum.efilive.com/showthread.php?13644-4L80E-swap-into-2006-6.0L-truck-with-4L60E)