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GEN III swap into early S10/Blazer

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Old Feb 24, 2005 | 09:22 AM
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Default GEN III swap into early S10/Blazer

I'm having a little trouble w/ the search button....doesn't seem to like S10.

https://ls1tech.com/forums/showthrea...25#post2509125
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Old Feb 24, 2005 | 10:51 AM
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I'm doing a killer swap on this as we speak. If you need anything please let me know.

Thanks,
Brian
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Old Feb 24, 2005 | 11:00 AM
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Hey Scream...

I've done some research. There's some info available, but not nearly as much as I'd like.

Are you considering 2wd or 4wd? They're pretty different. Let me know and I'll try to give you what I've found.

'Dreamin'
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Old Feb 24, 2005 | 11:13 AM
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I'm looking at an 89 2wd Blazer:



I have done some reading on an S-series forum, and haven't come up with a lot of good info as of yet. Have you found anything on swapping a 4L80-e into one?

BTW...thanks!
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Old Feb 24, 2005 | 11:48 AM
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The tranny stuff is easy but, i'm running a T-56
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Old Feb 24, 2005 | 11:50 AM
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Hey Scream....

I surf the MyS10 site fairly regularly. Also SyTy.net.

2wd shouldn't be that big a deal.

1.) Motor mounts and headers are available.
2.) Either the oilpan or crossmember needs to be modified to clear. Most guys seem to be using the truck oilpan (needs the least amount of work to clear). If you drop it really low, you may have to shorten the oilpan (I think it'll extend below the crossmember with the mounts that are available).
3.) There is a guy who wrote an installation guide. He wrote it while doing a swap into a 2wd. Web address is v8s10s.com, think it was like $18.
4.) Everybody who's done one says you'll want to use Vette accessories. The truck accessories extend forward another 2" (which in a S10 swap is really important space).
5.) From what I hear, the AC compressor either needs to move (aftermarket or custom bracket to locate up top) or you'll need to notch & box the frame for clearance. You might be able to get away without clearancing by mounting the engine higher, but you may run into trans tunnel clearance issues.
6.) I don't have any concrete information on whether the 4L80E fits without modifications or not. There's a guy in Sweden with a Ty running an 80E and running 9's (with the V6). But no real info on how bad it was to fit in. You might check with the guy at TurboLS6.com. He's sliding an LS6 into a Typhoon. I'm pretty sure he mocked up an 80E, but he's starting with a 60 (I think he got a good deal on a built tranny) and no turbo until he gets it sorted.

That's about all I can think of off the top of my head.


BTW, my project (which I am doing the research on) is a 98 or 99 4dr 4wd s10 blazer / jimmy / bravada. Want to run a 402 / 408, with 4L80e, and awd (using the BW4472 tcase). Dropped a couple inches, run 17's or 18's. And ultimately add a single T76. Ought to make a nice DD.

'Dreamin'
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Old Feb 24, 2005 | 11:56 AM
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justdreamin has it pretty much summed up.....but you need custom headers...the only header available sucks..sanderson..it's a shortie and it's only a 1 1/2" primary..everything else he said is what i've already done.
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Old Feb 24, 2005 | 12:14 PM
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Yep, corvette accessories are the best. The more room you can get at the front of the engine the better.

Unaffiliated Racing is dead on about Sanderson headers sucking too. I had a set on my '92 S10 with the standard SBC.

It would be nice to throw a Gen III into a 4wd model but, I haven't seen much info about a 4wd swap.

JustDreamin - Keep us updated on your progress. A 4wd RCSB S10 with a big inch engine sounds fun.
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Old Feb 24, 2005 | 12:16 PM
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Didn't realize the headers were so sorry....

The guy at TurboLS6 is (going to be) running shortie headers from a fullsize. He's got part number / pics on his website.


Unaffiliated: What are you building, if I might be so bold as to ask?

'Dreamin'
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Old Feb 24, 2005 | 12:23 PM
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I run a 4L80 in mine (1998 ZR2) behind first a stock LS1, then a 7.0 LS1, and now a LS6. I had to relocate the trans crossmember, build my own adaptor for the t/case to bolt to the trans, and change the t/case input to a 32 spline. I use a TCI controller, and wrote my own software for high and low range. I kept the original NV233 t/case.

I made my own engine mounts, oil pan, and headers. I have ETC (built a pedal with C5 electronics), so I built my own wiring harness. I use a reprogramed C5 PCM with special software to keep the dash working. The frame had to be notched for the A/C compressor and the heater case had to be modified on the corner for the valve cover. I remote mounted both rear coils because they would not fit.

Room in the front is real tight. I used a Corvette accessory drive, Be Cool radiator, and electric fans. I made a intake duct, and use a K+N filter on the right side. I made my A/C lines, but used the stock Corvette P/S/ pressure line.

I removed the 7.0 LS1 to install it in my Canyon. It is getting a T56 instead of a automatic, and it will be 2wd. It should be done in a couple months, or less if I get time to work on it.
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Old Feb 24, 2005 | 12:23 PM
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Just as an FYI

4WD adds just another couple of hurdles into the mix.

1.) A portion of the oilpan and the front differential try to occupy the same space. So the pan must be modified to clear.

2.) You've got that whole transfercase thing to deal with. Sadly, the tcase I want to use (the Borg Warner 4472 AWD case) was never behind a transmission with 32spline output.

And regular 4wd (vs AWD) just seems like a good way to break diffs, driveshafts, axles and other important stuff.


I'm hoping to get some of the loose ends on my other projects tied up so I can start on this one. Good start would be buying the vehicle! And, yes, I think big motor, awd, stuffed into a 2nd gen 4 door blazer ought to be good fun. It ought to be a real sleeper too.

'Dreamin'
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Old Feb 24, 2005 | 12:26 PM
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I keep seeming to be about 1 post behind. I go to comment on something somebody has said, and there's two more posts by the time I'm done typing. I either need to type faster or say less (probably that one).

ZR2: You have any pictures of your oilpan? Specifically the modifications you made?

More questions for you: Did the 80e require any floorpan modifications? Any other comments / concerns / suggestions / wisdom you can share about the swap?

'Dreamin'

Last edited by 'JustDreamin'; Feb 24, 2005 at 12:29 PM. Reason: More questions...
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Old Feb 24, 2005 | 12:34 PM
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That whole AWD case with a 32 spline input seems like a big problem. Someone needs to come up with a solution because there are alot of fullsize trucks that would love to put a 80E in front of a AWD case too.

JustDreamin - So the oil pan on a 4wd has to be modified even more than just cutting 2" off the sump area for ground clearance? What area needs to be modified, any pictures anywhere?

The Sanderson headers were just full of leaks(collectors, flange) and I could never get a header gasket to hold with those thin flanges. The 1 1/2" shorty tubes ain't gonna do a Gen III any good either.

Thanks
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Old Feb 24, 2005 | 12:44 PM
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Well...I work for a <cough>cam company<cough> so parts are cheap. 92' S-10 346cid, turbo, and direct port, ladder bars in the rear, coil overs all around, t-56....and daily diven
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Old Feb 24, 2005 | 12:45 PM
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Yeah, the oilpan needs a notch to clear the front diff / pass side diff tube bosses. TurboLS6.com has some pictures on his website. Both of his modified pan (actually there are two sets of pics, one old, one new) and I think he has pics of a mockup (with a pan with a big hole knocked in it) in place.


And the AWD 32 spline deal is something I'd like to figure out. The NV149 is one that I don't have much info on, but think might work (32 spline, viscous coupling, strong enough). But I can't find any info, and I'd be willing to bet they are expensive.

'Dreamin'
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Old Feb 24, 2005 | 12:54 PM
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The oil pan requires major mods to fit in a 4wd. I started with a Camaro pan, cut it off about 1" from the rail, and built the rest. I have some pictures somewhere, I will dig them up. Also, the oil filter won't fit with the diff, so you have to use a remote filter. I made my adaptor because I could not find one that was short enough. After I lifted the truck (5") there was room for a stock filter. Then I installed a 8.25" front differental from a full size truck, and although a stock filter still fits, it is really close.

I know how to fix the 32 spline input problem. I searched all over for a adaptor, or a shaft, or something to work. I finally found the right person and he gave me the part number to a production NV part that fit right in my original case.
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Old Feb 24, 2005 | 01:15 PM
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Hey LS1 ZR2....

I think TurboLS6.com must have set his engine/tranny a little further rearward / towards the passengers side. He's got a pic of it "installed" (engine's not fully assembled, but its in place). I'm not sure how to put it in here. Link: TurboLS6 Oilpan.

'Dreamin'
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Old Feb 24, 2005 | 02:34 PM
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I found a set of 1.75" primary shorties at LHT. I'll post a link later when I can find it again.
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Old Feb 24, 2005 | 03:45 PM
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Check out this topic...lots of good info
http://www.v8s10.org/forum/viewtopic.php?t=39
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Old Feb 24, 2005 | 09:05 PM
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LS1ZR2, I was wondering about your Canyon swap. What hurdles have you run in to so far that seem to be the biggest issues? I have heard the computer and wiring changed entirely on those trucks and don't really work well with the LS1 computers. Since you did so much custom stuff on your first swap, does that look like the route you will have to go with this one?
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