My swap. 5.3 into a 1990 3/4 ton 4x4 Suburban.

[Mr. 250r]

I don't think anybody has a good solution for ls 4wd swap headers i think my4by2 had some lucky with i think... trailblazer headers with slight fitment issues he's went through a few headers trying to get the right ones not 100% what though

And its probably easiest to use the tranny that goes with the motor as far as wiring goes but thats my opinion ill be using a 1991 4l80e and swapping out the plug from a new 4l80e so the wiring is the same and my 6.0 is on the way so im watching this thread since its a near mirror image of my build =-p

[y5mgisi]

Not a whole lot of excitiment as work has slowed significantly sense i had to go back to work... But the other day i did get the starter installed and ran the battery cables. Now i just gotta swap out the fuel pump, adapt the exhaust, and get o2 sensors and i should be at least ready for a test fire.

[y5mgisi]

Little bit of progress. Cut the fuel pump access panel so i never have to worry about dropping the tank again! And so i could change out the fuel pump to the high pressure unit.

[85burb]

shon has a thread on ls swap area called gauging intersest that he says dougs now makes headers for us.

[y5mgisi]

Going to go check that out right now.

[jkade]

You can make Mac Mid Length for a fbody work, that is what I have on my K5. Also a set of Sanderson S10 LS/swap headers fit great as well. I have a set of Mac's I need to get rid of for $200 shipped if someone needs them.

[y5mgisi]

ITS ALIVE!!!

Im the one filming in both videos. Only about 8" of exhaust past the manifolds so its loud.

http://www.youtube.com/watch?v=fxr9Y...layer_embedded

http://www.youtube.com/watch?v=gEEzA...layer_embedded

[franky69c10]

Nice
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[franky69c10]

Originally Posted by 91Subbed

The wiring is what gets me! It's looks confusing.
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X2
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[terry b]

That looks like some good work. About how many hours do you have into it so far?

[y5mgisi]

I think realistically, its about 30-40hrs on the actual swap itself. Thats not including any prep work like getting and cleaning the motor and all that junk. Latest pics,







Should be on the road next week.

[gringoloco]

Looking VERY nice

With the 1" setback adapter plates, did the trans bolt right up, or did it need to move?

[Ranger6202]

What did you do to get the stock truck manifolds to fit? (sorry if you already described this) Mine just weren't gonna work, so i opted for the 2010 F-body manifolds that fit like the old 350 manifolds.

[y5mgisi]

The setback mounts put the motor mount exactly in the stock position. I used the truck manifolds. The passenger side fit no problem. The driver side took some cutting and welding on the down pipe to get it to work. FYI Trailblazer SS manifolds seem to fit really well.

[Ranger6202]

One more question for ya. What did you do for the "in gear" wire to tell you pcm to idle down when you put it in gear. I know on the newer trucks the safety switch and "in gear" switch are the same switch. But on my '85, all i can find is the reverse light switch at the bottom of my column. I know i have a safety switch cause i could never start it in any other gear when i had the 350 in it, but i can't find it.

[y5mgisi]

I didnt. Im going to see how it goes but lots of folks including a friend of mine dont have it hooked up and it behaves just fine. If i start to not like it i will figure out something to do with it.

[Mr. 250r]

i ended up using the edelbrock shorty headers that came on my 6.0 and they fit perfect on driver side but passenger need minimal amounts of hammer work and then fit im not worried about a small dent because notching my frame is out of question i didnt feel like spending extra money on manifolds because i need to get it done soon

[y5mgisi]

Cool! Yea if you can make the headers work you might as well use them! I got lucky yesterday and found out that a buddy of mine who recently put a 6.0 in a jeep still had his mechanical fan that i needed and gave it to me for free! So thats pretty awesome.




Also got a bunch of other little stuff done today. Just a couple little things to button up and then i still need to get a throttle cable and i will be good to go!

[y5mgisi]

Recent pic. Just need an intake tube setup and I'll be ready to hit the road!


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[Clyde65]

I found this site to be helpfull for the CAI parts.

http://intakehoses.com/?gclid=CPzyyd...FWdjTAodz2KU0w

[y5mgisi]

Thanks for that link! After i had my basket full of everything i needed(the "cobra head pieces are especially awesome!) i decided to check one more time on ebay for a factory one. Found one for $25 shipped! So, i ordered it up and hopefully it will work cause otherwise, my basket at intakehoses.com was about $100! Not to mention that i really want the look of the factory one anyway so i really hope this one works out! Here is the one i got,

http://www.ebay.com/itm/290670350586...84.m1439.l2649

[y5mgisi]

Drove it for the first time tonight!

[85burb]

Well....how did it go...

[y5mgisi]

Went excellent! All i did was drive it up and down my dead end street twice. I got two really bad videos of it just for the file. Here they are.

http://www.youtube.com/watch?v=YWjByGDaW6w

http://www.youtube.com/watch?v=6ytVMRnF31g&feature...

[y5mgisi]

Well i can say that its pretty much done! Few minor issues to wrap up but its pretty well ready to hit the highway! As usual, here is some videos!

http://www.youtube.com/watch?v=tehx0GAbfAs

http://www.youtube.com/watch?v=HWBLn1CJDbs

http://www.youtube.com/watch?v=flsd4aNbEOM

http://www.youtube.com/watch?v=tloC3WgkdFQ

http://www.youtube.com/watch?v=9I_AVFfpMkI