1987 R20 Suburban LQ4 4L80E swap

[Nodnarb76]

Originally Posted by MTCK

Looks good. Any more exhaust pics? Sorry can't help on the vacuum line. I've been all hydroboost for some time.

Thanks, next to me I'm under the truck I'll snag some pics.
Should sound great. Dual 2.5" exhaust, magnaflow mufflers and tips, with no cats.

[68Timber]

Can you post the muffler part number? I'm curious what model you bought and how you like it. I have a pair of them in my parts pile, but since I bought them I've read several posts about how obnoxious they are. And mine are on the small side...

[Nodnarb76]

Good news found a creative solution for my radiator problem.
Using the small block LMC brackets I bought, some neat aluminum spacers I found on an old sign at work, my old exhaust manifold springs, some extra radiator pads I had laying around and two small bolts.

[Nodnarb76]

Bad news, I got the wrong fittings for my radiator cooler lines!
Does anyone know what fittings I need to connect 6an hoses to my radiator?

[MTCK]

I'm not sure what your radiator takes, but my stock one has inverted flare fittings. Link below.

http://m.summitracing.com/parts/AER-FBM2111

[Nodnarb76]

Originally Posted by MTCK

I'm not sure what your radiator takes, but my stock one has inverted flare fittings. Link below.

http://m.summitracing.com/parts/AER-FBM2111

Thanks man!
Just ordered two of those!

[Nodnarb76]

The more I have thought about it, I just don't trust JB weld to last forever.
I am worried I would have a problem at the perfectly wrong time. Going to a shop on Monday to have it properly welded up.
My two month build estimate is gone for sure now (going into month 4 soon), no big deal, as my dad is very kind to let me use his truck until mine is done.

[robgmaddux]

Nice build. You probably already covered this but what did you use for the ac Comp bracket?

[Nodnarb76]

Originally Posted by robgmaddux

Nice build. You probably already covered this but what did you use for the ac Comp bracket?

Thanks for the kind words!
used the Dirty Dingo Compressor mount:
http://www.dirtydingo.com/shop/produ...oducts_id=1418
let me know if you have any more questions.

[Nodnarb76]

Here is a pic of where the crack in my filler neck is (can't see the crack now because of the JB weld I foolishly tried to fix).
Taking it to a shop Monday to get welded.
also another pic of how the motor looks now. Getting close, only a few fuel lines to connect once the radiator is done!

[Nodnarb76]

Well, new radiator brackets from LMC won't work either. They are for a radiator way smaller than mine. I have bought every bracket from LMC and nothing works. The stock one piece top bracket is still too short also. Looks like I am going to have to start making some sort of spacer. This is frustrating, spending all this $$$ on such a nice radiator and the damn thing doesn't fit. I currently have some pieces of rubber hose wedged between the radiator and the rubber mounting pads and it seems to be secure for now, but sure would feel better if I knew it was more secure.

[68Timber]

Seems like this is very common. I saw this video while radiator shopping, it's changed my mind about aftermarket aluminum radiators: http://www.rockauto.com/en/moreinfo....050635&jsn=423

[77c10]

Originally Posted by Nodnarb76

Well, new radiator brackets from LMC won't work either. They are for a radiator way smaller than mine. I have bought every bracket from LMC and nothing works. The stock one piece top bracket is still too short also. Looks like I am going to have to start making some sort of spacer. This is frustrating, spending all this $$$ on such a nice radiator and the damn thing doesn't fit. I currently have some pieces of rubber hose wedged between the radiator and the rubber mounting pads and it seems to be secure for now, but sure would feel better if I knew it was more secure.

I've ran into the similar issues mounting my aluminum Champion radiator to my core support. None of the brackets from LMC work. I'm thinking I'm gonna get a couple pieces of aluminum tig welded to the side and bolt it to the core support.

[MTCK]

Well that's annoying. Could you build some simple spacers out of square stock to go under the bottom mounts?

[Nodnarb76]

Originally Posted by MTCK

Well that's annoying. Could you build some simple spacers out of square stock to go under the bottom mounts?

That is what my plan is now, heading to home depot this weekend to take a look around and see what I can come up with.
Glad to know this problem is not unique to me!

[Nodnarb76]

Well got a little more done today, relocated the fuel regulator, mounted my overflow tank, then ran into a problem. When attaching the nipple to the radiator for the overflow tank, I found out the radiator was dented in where the filler neck is and the hole for the overflow nipple was too low and I couldn't thread it in. I pulled the neck up a little using a prybar and was able to install the nipple, but broke the weld where the filler neck meets the tank!!! In a panic I grabbed some JB weld and patched it up. Because the crack was so small and close to the filler neck, I could reach the crack from the inside and I was able to JB weld it from the inside and out. Going to wait a few days and re- apply. Wish me luck.

Good news, connected my fuel pump and turned the key and squirted fuel on the ground for a few seconds. I have been meaning to do that to make sure I have fuel comming out of my feed line. Without the engine running I am supposed to only get fuel for a few seconds right? when the engine is running it will Keep pumping correct? Figured it was a safety thing in case of an accident.

[MTCK]

Yeah pretty sure they just prime for a few seconds unless it sees rpm.

[MTCK]

Mine fit. Hope yours do too.

[68basket]

seems like a strange place for your fuel filter/regulator. I like to keep them close to the tank to keep the return line short.

[Nodnarb76]

Last night went to a friend house to use their miter saw, and I managed to get my Trans cooler and fuel lines made!
Should be able to start it on Sunday once I get these installed.

[MTCK]

You are probably up to speed on this, but do you have the right fittings at your trans to maintain flow? I can't recall what year they went to the different style but there is a deep fitting on the supply or return that if not used will cook your trans right away.

[Nodnarb76]

Originally Posted by MTCK

You are probably up to speed on this, but do you have the right fittings at your trans to maintain flow? I can't recall what year they went to the different style but there is a deep fitting on the supply or return that if not used will cook your trans right away.

Thanks for the advice. Yes I believe I have the correct fittings. The one in the rear of the transmission was longer than the front.

[MTCK]

Cool, no problem.

[Nodnarb76]

It's been a while since I've worked on the truck. Taking this whole week off to wrap things up. Today I finally got my electric fans wired up, got the rest of the wiring loomed up and cleaned up. Installed new hood insulation too.
Let it run for 45 min with no overheating, leaks or any other issues.
Before I called it a day, decided to wash it for the first time in 6 months.

[Nodnarb76]

Picture of how it's looking now. With the new hood insulation.