88 1 ton suburban, 5.3L swap FINISHED! 11/15/11.....CUCV rear shackle help!

[xpndbl3]

Did you match all the wire colors or just use the same color for all of them also what gauge did you use?

my buddy has taken apart several of these harnesses for people and modded them, so I had a giant box of wires and matched all the colors 100% when lengthening them.

Thanks for the reply! Really I was talking about tieing all the pinks and Oranges together. say for example you have 12 pink wires that you need to have joined into one so that you can hook just one wire up at the fuse panel. How did you go about tieing those twelve wires together?

There's a few websites that show what pinks to combine in the fuse panel, without having it in front of me, I believe all the injectors get their own fuse, computer gets its own fuse, and the coils get their own fuse in the panel. You trace it through the harness to hook it up that way.

 

[xpndbl3]

Fixed the wiring issue today with help from a buddy, it seems the coil circuit wire for #6 coil was ran to pin 22 instead of 28, probably couldn't see the numbers too well in the dark when the harness was done over last winter. Now the truck idles smooth as glass. Tomorrow I will finish the fan relays, zip tie up some wiring under the motor and loom everything loose that is non-factory. Feels great to be so close to being able to cruise the truck again.

i'll get some finished product pictures over the next couple of days once my cold air kit comes in as well.

 

[y5mgisi]

Awesome man! Good job!

 

[85 Burb]

X2

 

[TheBeast_88K5]

I wish I had the initiative to do a motor swap like that...

Nice work!

 

[shady]

I'll be doing this exact swap to MY 88 burb in the near(hopefully) future. thanks for doing this right up. its gonna be alot easier for me seeing it done first

 

[xpndbl3]

got the ebay cold air kit on today, going to see if the 05 silverado heat shields they include with the kit can be used on my suburban possibly, otherwise I'll skip them lol. Also got the fan relay hooked up, it's been pouring off and on all day, supposed to snow wednesday...hopefully tomorrow it doesn't rain all day like forecasted. Have an appointment with the stereo shop for thursday to have the remote start rehooked up to this engine, so I can warm the truck up over winter. Right now it all works but starts and dies 3 seconds later because it doesn't recognize the tach signal, since a gen 3 motor is outputing a 4 cylinder engine signal not a v8 signal like a tbi truck. So after they reprogram it, should run like before

 

[RollinKaos]

Nice Burb and cool build. Thanks for sharing. Cant wait to see the end results.

 

[xpndbl3]

bad camera phone flash taken at dusk....

This rain all day the past couple of days is really getting old, I need to finish this truck before we have our cold snap.

 

[muddysub]

you're killing me man! i bet you're dieing to drive it huh?

 

[xpndbl3]

I'm dying to drive it and finish looming all this wiring and zip tie some wire under the dash and under the engine. Not to mention mount the computer "finally". The weather is definitely screwing my progress up, figures on the days I'm off work it rains and can't finish the truck. lol.

 

[xpndbl3]

Took some quick pics today before I put the truck back on the ground off the jackstands. Figures it starts raining right after that lol.

Some people have PM'd me about the exhaust, so I got those shots as well.

 

[xpndbl3]

just drove it for 10 miles to get down to the gas station and toss 15 gallons of fresh premium in it, the fans didn't kick on, I'm hoping that's an easy fix with some wiring/tuning. Also the radiator was steaming a little, I'm thinking some trans fluid got spilled onto it, was coming from some of the fins not near the hoses, we'll see tomorrow when I get the remote start reprogrammed for this engine

 

[xpndbl3]

Little update: Radiator is fine, fans kick on at 210 degrees now(found out the factory gauge isn't very accurate and reads higher than it should by 25 degrees once warm), and tuned the truck with a wideband, it was very rich from the factory at cold startup and during wide open throttle. We put about 7 tunes into the computer and finally got it 100%.


Remote starter works perfectly also now. Can't wait to enjoy this truck finally!

 

[85 Burb]

Truck is coming along real nice . Did you mention what size tires you run on that beast?

 

[xpndbl3]

35" dick cepek mud country on 17" hummer 2 rims

 

[85 Burb]

Pardon my hijacking, but how do you like those with the 4.10's?

 

[xpndbl3]

well with the Th400 small first gear, it's slow but it's to be expected. With a 700R4, you'd get a 3.06 first gear instead of 2.48, so that would make acceleration better. It's still better than the 3.73s that were stock, and now the extra power from the new motor sure helps as well


If I had the cash there would be 4.88s in the axles though, maybe next year.

 

[85 Burb]

Just curious because I have the same setup with the TH400 and 4.10's, except I just got a crate 350 and 33's, just trying to figure what to budget for in the coming months.

Alright, hi-jack, resume truck building

 

[xpndbl3]

i bet with 33s it'll be just fine