i have an 01 sierra RCSB with a 4.3 & a 5 speed.
and would like to swap it to a LQ9 with an auto trans.
but i like the 6.2 L92. have any of you tried it or know what it takes for a L92 swap? ECU? harness? motor mount? trans? rear end?
ive heard the LQ9 is an "easy" swap. id like either but that L92 is pretty nice.

ive been thinking of an LS2w/T56; 6.0 LQ9 w/FLT 4L65E or the L92 w/???.

any of you done any of these swaps if so how? what did you do?

 

the lq4 would be the "easy swap" i would say the l92 will in the end almost double the cost of the lq4

 

Speartech did an 01 swap with either a ls2 or l92 and 6 speed auto, they had to do a special harness to keep the stock pcm to take care of the dash and a/c.

 

that's only really needed because they did the 6 speed auto trans. my ls3 will be running on my factory pcm and harness with just a few simple mods but i will be running my 4l60e behind it for now

 

go with l92, i'm in the prosess of doing 2 trucks with ls3's and the stock pcm can handle it...it can be done

 

well im swapin my 5.3l for a 6.2l l92 i got a set of 241 heads ported polished and so i didnt have to get a new intake and im putting a g5x2 232/240 Duration, 595/608 Lift 112lsa,Cold Air intake,Underdrives,Pacetter long tubes,X-pipe w/ flows.... oh and i had to get a converter from Lingenfelter so my pcm would read the cam and crank sensor

 

what would be involved with this swap done to the same truck w/ 4.8? and also the t56 tranny o swap also?