1994 Z71 5.7 TBI swap

[GMC1994]

First off welcome. Second I just got done putting an 05 6.0 in my 92 z71 and i used all truck acc. I would also advise putting in a new trans if your at all bit nervous about your current one. Its amazing the difference in power these new engines make. Also this thread is very very helpful. http://www.ls1truck.com/forums/lsx-t...onversion.html

Just came across this posting and I too am just starting my process.. 1994 GMC Sierra SLE Long Bed, 3/4 ton, 4X4, 4L80E(just had rebuilt so plan on keeping this a while), 5.7 TBI are the existing parts. Looking to swap a 5.3 or a 6.0 into the truck. So what you are saying is that I should be good to go with the 4L80E trans. But would this trans hold up to the new 6.0 LS?