i can get an lq9 complete turnkey motor with harness and ecu and 4l80 for 3400. i dont know what else i will need but not much i think.
well then for that price i would do it.. you will need to modify your transmission cross member.. the trans mounts for the 80 is about 3" diffrent from the 60...
2nd are you 2wd.. or 4wd.. if 4 then you will need a diffrent input shaft for your transfer case.. the 60 tcase is a narrow 27 spline and the 80 is a fatter 32 spline..
here is link to the part: you need part number 108
19019
236/246 input, 32 spline 4L80E
$98.50 will come out to about $120 shipped
http://tbtrans.com/transfer_case.htm
you will have to over haul the tcase and install this shaft..
here is a link to a step by step.
http://www.performancetrucks.net/forums/gm-drivetrain-suspension-22/ecsb-4wd-4l60e-4l80e-424904/page13/
^^ above link also shows about modification for the trans mount..
make sure you get the trans ecm and the main ecu.. and you should be good to rock n roll.. you may have issues with the older gauges talking to the computer but if you splice the 2 harnesses be good... i will make a call to a buddy to night and get you an anwesr
thanks for the great info this will help a TON and then some
