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73-87 Chevy _ GMC Trucks => 4 Wheel Drives => Topic started by: 85 1 ton 4x4 on March 01, 2009, 09:26:52 am

Title: updating old chevy 4x4
Post by: 85 1 ton 4x4 on March 01, 2009, 09:26:52 am
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
Title: Re: updating old chevy 4x4
Post by: Captkaos on March 01, 2009, 06:08:50 pm
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.. 
Title: Re: updating old chevy 4x4
Post by: choptop on March 01, 2009, 09:49:03 pm
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??
Title: Re: updating old chevy 4x4
Post by: Irish_Alley on March 02, 2009, 12:56:30 am
it should be OK the 4l80 t-case went to the pas. side so it should all be in place
Title: Re: updating old chevy 4x4
Post by: redburban on March 02, 2009, 11:37:40 am
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
Title: Re: updating old chevy 4x4
Post by: 85 1 ton 4x4 on March 02, 2009, 05:43:18 pm
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.
Title: Re: updating old chevy 4x4
Post by: Captkaos on March 02, 2009, 08:26:49 pm
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.
Title: Re: updating old chevy 4x4
Post by: Jay2D2 on March 02, 2009, 11:10:54 pm
Sorry to steal the thread for a moment but was just wondering if a duramax swap has ever been attempted in these trucks?
Title: Re: updating old chevy 4x4
Post by: werewolfx13 on March 03, 2009, 12:03:48 am
IIRC, it wont fit between the framerails.