1994 Silverado 4.3 V6 to LSX swap complete

So far so good with my swap, I have about 800 miles on it and I have to contribute alot of it to the help from those on this site, just thought I'd post some pics of my swap, truck started life as a base package 4.3 V6, it had been in a hail storm sometime back and still has the dents from it, for now it's a nice hot rod to run around in and looks good from 20 feet away, during the swap we lowered it with a
DJM 4/6 kit, donor drivetrain is from a 05 model avalanche, I swapped over to the cable drive throttle body to make things more simple. I bought my harness from nelson performance,fan harness and comp program by them also, if anyone has any questions about the swap feel free to ask, I took some closer detail pics
on the a/c bracket and fuel line setup to give those who may be working on a swap, I could not be happier with how this swap turned out, 2 thumbs up to this site and 2 thumbs up to Jon at Nelson Performance!!

Big Thanks to my friends Chris, Keith and Bill for some odd and end parts and help getting the conversion complete!!
http://i125.photobucket.com/albums/p...LSXawap012.jpg
http://i125.photobucket.com/albums/p...LSXawap004.jpghttp://i125.photobucket.com/albums/p...LSXawap002.jpg
http://i125.photobucket.com/albums/p...LSXawap003.jpg
http://i125.photobucket.com/albums/p...LSXawap001.jpg
http://i125.photobucket.com/albums/p...LSXawap005.jpg
http://i125.photobucket.com/albums/p...LSXawap006.jpg
http://i125.photobucket.com/albums/p...LSXawap007.jpg
http://i125.photobucket.com/albums/p...LSXawap011.jpg
http://i125.photobucket.com/albums/p...LSXawap013.jpg

Looks good man.

Thanks, I just gotta do something with that upper radiator hose, that coupler looks like crap to me

Did your factory Y pipe bolt right up to the new exhaust manifolds? If not what did you have to do? Thx

No, I just bolted up short pieces of the stock pipe coming off each manidfold, they saved them for me here at a local yard so that I'd have enough to bolt in my 02 sensors, The drivers side was right against the frame, the exhaust shop took the stock piece of pipe off the manifold and made a cut on the backside of the pipe, reinstalled it back on the manifold and used a bar to bend it away from the frame, then took it back off and patched the opening with some scrap exhaust, he was actually pretty creative and it looked good when he was done with it, from there it's a true dual setup with X pipe section and bassani mufflers and bassani tips

Very clean install looks good, I know that once the swaps all finished it's a big relief. Enjoy your new ride..

thanks for the compliment, it's a blast to drive!! I have yet to check on the highway mpg but for now the mileage that it's getting running around town is alot better than the crap box 4.3 got

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Originally Posted by 1991SSP

thanks for the compliment, it's a blast to drive!! I have yet to check on the highway mpg but for now the mileage that it's getting running around town is alot better than the crap box 4.3 got

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Isn't that amazing? How a V8 can get better gas mileage than a V6 (or I6 for that matter) is beyond me. Technology is a great thing!

Sweet conversion bro! thanks for sharing!

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Originally Posted by 1991SSP

Thanks, I just gotta do something with that upper radiator hose, that coupler looks like crap to me

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I am sure you know but that nipple on the radiator is threaded on the inside.

Cool swap man! Where are the exterior pics to show off the new stance? Lol. What pcm mount is that?

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Originally Posted by vortecyota

Cool swap man! Where are the exterior pics to show off the new stance? Lol. What pcm mount is that?

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I cut and modified a stock mount from a 98 silverado,, I'll post more tomorrow

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Originally Posted by gagliano7

I am sure you know but that nipple on the radiator is threaded on the inside.

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I noticed some are threaded and some are not, just my luck that mine is not threaded

Nice swap - I'm thinking about doing the same with a 96 4.3... how long did it take you once you had the majority of your parts and what was your biggest challenge that you didn't expect?

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Originally Posted by 404LS

Nice swap - I'm thinking about doing the same with a 96 4.3... how long did it take you once you had the majority of your parts and what was your biggest challenge that you didn't expect?

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Changing the lower motor mounts on the frame,, pain in the arse

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Originally Posted by 1991SSP

Changing the lower motor mounts on the frame,, pain in the arse

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i know how those are..... change my old ones out when i put the new motor in.....

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Originally Posted by 1991SSP

Changing the lower motor mounts on the frame,, pain in the arse

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I didn't want to take apart the suspension on both sides of the truck, just to access the bolts to remove the frame mounts for the engine, just to have to put it all back together again. The V-6 frame mounts are plenty stout enough to use. I simply fabbed two basic engine block mounts, to bolt to the existing frame mounts. Piece of cake.

Nice job! I too like the better gas mileage out of the V8 vs the V6!

Looks real good! What a blast to drive huh? I am very very interested in your A/C setup.......:cool: I've been going 2 years now on 5.3 swap in central Texas heat with NO A/C!!

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Originally Posted by r6z4o6

Looks real good! What a blast to drive huh? I am very very interested in your A/C setup.......:cool: I've been going 2 years now on 5.3 swap in central Texas heat with NO A/C!!

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I've got belt squeal with that AC bracket,, I'm gonna drop the cash on a dirty dingo bracket when spring comes around

Almost 2k on the swap,, love the swap and 22 mpg

I have a 94 silverado with a 4.3l and im looking to put an ls1 from a gto in it, and i would like to full exhaust/cam it. what trans, driveshaft, and rear end should i use? plz help.

why didnt u go with the 4l80e?

My 4L60 was basically free in a trade i did with a friend , plus it bolted up and I was able to use my stock crossmember with little modification