350 swap?

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350 swap?

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Blazer >> Mechanical & Maintenance >> Engine & Transmission >> 350 swap?

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350 swap? - 12/11/2007 8:46:24 AM

Jharper

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From: Michigan
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would it be hard to do a 350 in my blazer instead of rebuilding my 4.3 or buying new one. if i could do a 350 for cheaper and easy, what would i need for a tranny?

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Jeremy

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RE: 350 swap? - 12/11/2007 9:45:23 AM

nj4x4blaze

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Here's a site that shows you how to do the swap and pictures as well. You use most of all your stock items.

http://www.jagsthatrun.com/Pages/Chevrolet_S-10_V-8.html

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RE: 350 swap? - 12/11/2007 9:49:42 AM

Jharper

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what would i need for a transmission?

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Jeremy

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RE: 350 swap? - 12/11/2007 9:54:08 AM

nj4x4blaze

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The site says you can use your stock trans but they dont recommend it. I would contact them and see what trans they want you to use. I've found Tahoe motors like new on ebay going for 1500 - 1800 with wireharrness and computers.

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Dave- 01 blazer 4x4, 6" Superlift Kit,15x8 on 32''s and 20"x9" on 33''s,New Jersey Chapter

www.subsonickustomz.com
NJ,MI,IN,WI,IL,CO,MN,AZ,NC,

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RE: 350 swap? - 12/11/2007 10:04:47 AM

Jharper

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well i do not have that much money, the most i have is likt 700 bucks, i can get my hands on a 4.3 for 350 but i dont nkow what shape its in, should i just pay to rebuild mine?

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Jeremy

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RE: 350 swap? - 12/11/2007 10:31:15 AM

nj4x4blaze

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Honestly I dont know how much it would be to rebuild your motor. Are you doing the work urself or taking it to a shop?

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Dave- 01 blazer 4x4, 6" Superlift Kit,15x8 on 32''s and 20"x9" on 33''s,New Jersey Chapter

www.subsonickustomz.com
NJ,MI,IN,WI,IL,CO,MN,AZ,NC,

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RE: 350 swap? - 12/11/2007 10:40:57 AM

Jharper

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doing it all myself, me and my brother are doing it, along with my friend devin who knows everything about 4.3's, parts alone were like 475, not including all fluids needed, just main parts.

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RE: 350 swap? - 12/11/2007 11:46:38 AM

nj4x4blaze

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Well rebuild your motor then. At least if something goes wrong you'll know what the problem is and you can do some minor up grades too like a edlebrok intake manifold..

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Dave- 01 blazer 4x4, 6" Superlift Kit,15x8 on 32''s and 20"x9" on 33''s,New Jersey Chapter

www.subsonickustomz.com
NJ,MI,IN,WI,IL,CO,MN,AZ,NC,

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RE: 350 swap? - 12/11/2007 11:58:12 AM

swartlkk

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Won't be able to use an aftermarket intake manfold and keep the SCFI injection system... Does Edlebrock even make a MFI intake for our trucks? I thought they were only TBI and carb'd intakes.

I say rebuild it yourself. You may be surprised at what you find. You can have the crank ground under sized and use over sized bearings (check clearances on each journal though). A general rebuild kit, not including crank, pistons, & rods, should run you around $150 (unless the price has shot up in the last few years). If your cylinder walls are scored or worn pretty hard, you may need to do an overbore which would require new pistons. If the cylinder walls look good, use a ridge reamer to smooth out the top of the bores and hone the cylinder walls, re-ring the pistons and send'em home again. Grind the crank to smooth out any problems if there are any and slap some new bearings in and you are good to go.

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RE: 350 swap? - 12/11/2007 12:09:55 PM

Jharper

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I FOUND A 4.3!!! 250 bucks, 100,000 miles, going tonight to hear it run. in a rearended s10. hopefully i can get it!

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RE: 350 swap? - 12/11/2007 4:06:22 PM

Hanr3

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Sounds like a plan.

As for the tranny, yes your tranny will bolt up to a V8 and it will survive just fine. Teh only difference between the 4.3 version of the tranny and the SBC V8 version is the number of clutches in the clutch packs. When you rebuild your tranny, later in life, you can "upgrade" it to the same number of clutches as a V8. They come in the rebuild kit.

Get pics and ask questions.

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RE: 350 swap? - 12/11/2007 4:11:52 PM

Jharper

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that motor i posted about before is an older style 4.3, will the bottom end of that bolt up to my new top end? i think the only difference is the intake systems.

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Jeremy

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RE: 350 swap? - 12/12/2007 9:27:01 AM

Jharper

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From: Michigan
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Hey everyone, just letting everyone know, i found a motor for my blazer, its a 4.3 Vortec, W Code, will bolt right in, im going to look at it tonight and make sure it runs right. thanks for help to everyone that helped me out.

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Jeremy

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