4.3 to 6.0 fuel system question HELP!!!!!

Hello fellas i have searched and tried to find the answer to my question and can not find it... sorry if it already has been covered many times but i could not find the answer.

2006 silverado 4.3 v6 swaped out for a 2005 escalade 6.0

i have swaped everything out already and last thing i need to know is

6.0 returnless fuel system(e85 bla bla)
4.3 has a return line

now my question is...how do i make fuel system work w/ the 4.3 fuel lines?

or should i just switch everything out form the escalade.. fuel system
lines pump assembly ect.?

any ideas would be greatley appreciated


any write up links/pics would be nice PLZ help

OH! and will the 06' V6 rear diff gear be ok or should i switch it out?

What rear gears does it have?
Corvette fuel filter w/regulator is an option or aftermarket FPR.

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Originally Posted by PitchBlackC3

What rear gears does it have?
Corvette fuel filter w/regulator is an option or aftermarket FPR.

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what year corvett fuel filter?? part #??

You could also use 99-03 fuel rails, I suppose. The lines will still be slightly different where they attach to the fuel rail. You would need to adapt them or use factory 99-03 V8 lines back to where they are the same.

do you know if the 06 silverado 4.3 V6 had a intank FPR for sure?

i took off the spider and saw what seemed to be a FPR on it,but....when i hook up a fuel pressure gauge to the rail(on the new 6.0 swap) i get 60PSI ..if no fuel pressure regulator was on it wouldnt it spike to like 80 90??

problem im getting is crank no run on the initial start up on the 6.0 swap....but if i spray starter fluid it will run so i know i have spark there...

the motor came out of a rolled escalade dose the computer have a saftey that maybe kicks off the injector signal???

99-04 corvette fuel filter
napa p/n# 3737

What did you do about the VATS? Did you do a relearn after installing the new engine/PCM?