updating old chevy 4x4

[85 1 ton 4x4]

i have a 85 chevy 1 ton 4x4.i took out the big block and turbo 400.i will be replacing it with a 2000 5.7 fuel injected and 4l80e trans out of a 2500 suburban.how many problems will i be facing to make this work.thanks

[Captkaos]

Being a Vortec 5.7, it should bolt right in place.  You will need the harness but every thing else should be a straight swap over.  You will need High pressure EFI specific hose and a return line.  You could run a Corvette filter with a built in regulator and only have to run one feed line to the motor, but you would have to plug the return line on the setup you have.. 

[choptop]

doesnt the 2000 sub have independent front suspension?? How are you going to change the front end, or will the 4l80 bolt up too the existing transfercase??

[Irish_Alley]

it should be OK the 4l80 t-case went to the pas. side so it should all be in place

[redburban]

this is the same swap that i am wanting to make on my 91 burb!  keep us posted on progress would ya! is anyone else on here making the same swap? thanks

[85 1 ton 4x4]

for the transfer case i will be using the round flange 205.the computer problems is the main worry.the 4l80e was installed from factory in the 91 suburbans from what i have been told. captkoas- i have the complete harness with motor and trans.were would i find the corvette filter and regulator. choptop- yes the burban has a independent front suspension,i will stay with the solid front.i hope everything works.i will keep ya posted.

[Captkaos]

You can get the Vette filter/regulator from Autozon.  It is for the 99-up Corvette.
If you have the computer, you are already set for controlling the trans.

[Jay2D2]

Sorry to steal the thread for a moment but was just wondering if a duramax swap has ever been attempted in these trucks?

[werewolfx13]

IIRC, it wont fit between the framerails.