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I’d like to share some of the stuff I learned, figured out, cobbled whatever you want to call it when I did my LS swap in my van. I didn’t take a large amount of pictures for the project but I will insert them as it makes sense. A little background on the unit.
Tire Wheel Car Land vehicle Vehicle

Here is the day I brought it home. Killer marketplace find. $500. 105,000 miles. I’m 2nd owner. Old guy I bought it from bought it new and used it for his auto glass business. Never drove in the winter and stored inside as long as it wasn’t out on a job. The 4.3 was knocking And down a cylinder but it started and drove itself on the trailer. Everybody laughed about my grandpa van, they just couldn’t see the big picture. The plan was a 6.0 with a 400 in it. When I was in high school I swapped an old 305 into my 87 Astro and never had issues with the rear end so I figured I would leave this one stock too, it already had the G80 with 3.42’s in it. We’ll I’ll get into that later….
First I collected parts. I’ll try and list manufacturers and parts as i go.
 

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Automotive tire Automotive exterior Motor vehicle Bumper Gas

Automotive tire Wood Gas Automotive wheel system Rolling

Automotive tire Wood Bumper Tread Gas

Audio equipment Symmetry Pattern Metal Engineering
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The trans is a 400 turbo i sourced out of a 1977 motorhome. It was built with a TCI reverse manual trans brake valve body, raybestos clutches, upgraded planetaries and other misc upgrades. It’s running a Transmission Specialties 3500-3800 8” converter with ballon plate. The engine was a 6.0 I pulled out of my s-10. It was knocking so it needed freshened up. When I disassembled it I found it has some stiff wrist pins. I ended up horse trading for a low mile 6.2 rotating assembly. Sent the block in to get bored .065 to fit the new slugs and have a 24 tooth reluctor wheel installed. Picked up a comp cams low rpm cam, a set of new 823 squareport heads, complete head kit, GM performance LS7 lifters, file fit moly rings, chromoly pushrods, rocker arm bushing upgrade kit, king bearings and all ARP fastners. I’m running 67 Chevy truck direct fit 2.5” shorty headers. The dump on them is almost a perfect fit in the Astro. I found a deal on a LS3 intake and throttle body so I grabbed that and started assembling the engine.
 

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awesome! thank you for sharing these pictures with us

I find everyones a critic until they get to enjoy the final result. Grandpa van is at least better than "rape van" which is what hear all the time about mine.
 

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2000 Lifted 4x4 Astro 92 V8-350 Shorty
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Wow... GREAT find!
Perfect for you project!
AND a great price too.

I'm familiar with much of what you're doing. I also have several TH400 transmissions.. ran them behind my big blocks. Sadly not much use for them now. I cruise the highways.. so overdrive (and lockup) is now very important to me. My 700R4 is a good fit.. but going to need a little love if it's going to play with my V8. I've got a nice tight low-mileage modded TH350 (with Holeshot converter) doing temporary duty. The wife loves chirping the tires when she drives it.

I've also run TCI converters (with anti-balloon plates). I found out quickly how important and neccessary those extra balloon plates were. Mine was 10" 3000-3500 stall (behind a full race big-block engine). In my opinion however, you may be running WAY too much converter (with 3500-3800 stall).. considering your "low rpm Comp cam". It all depends on your objective though. Burning rubber will not be a problem.. lol.

I bought a lot of "Comp Cams" in my day.. always my favorite brand. Wish I had a "more tame" cam now... as good mid range toque is all that is really necessary for these vans. My A/C and my current race-cam don't get along (at idle and at traffic lights.. lol).. but it sure sounds good. For computer controlled throttle body and FI... the right cam is certainly important.

I too am still running stock rear in my 92 behind my healthy V8.
It's got well over 300K on it and it's never even been cracked open.
Still running stock springs too.
I guess I'm really just pushing things back there.. lol

The motor assembly looks AWESOME!!! For someone who is not taking "too many" photos, you sure took some great photos! Keep them coming. The 6.0 is going to be incredible! I've bored a few engines myself, and familiar with performance goodies. Excellent job with excellent parts and assembly. LOVE THIS!!

I've had to re-read your posts a couple times.. you put in a LOT of information.
Like to know more about your planned dual header exhaust system.

The GEN 1 shorty is the PERFECT V8 HOT-ROD SLEEPER!!!
And it seems you couldn't have found a better find!
I have my suspicions that this is going to evolve nicely.
I want to stay on your "mailing list" of updates.. LOL

You seem to be quite knowledgeable and already know what you want and need... which is quite refreshing. I have a feeling this is not your first time. Looking forward to your project build with great enthusiasm.

Welcome!!
 

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Damn I hurt my neck trying to read those cam specs. Nice find it should be a fun ride with the 6.0
Keep us posted
 
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