Anyone willing to help me with doin a motor swap? - S-10 Forum
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post #1 of 32 Old 03-05-2019, 02:32 AM Thread Starter
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Anyone willing to help me with doin a motor swap?

Before i get mouthraped.Yes I have been on here before. Ive looked through and read alot. Im taking all I can into the memory bank.Ive done a few, but never 4x4. So 2.8l 4spd 85 s10 Durango 4x4.....3.4 or another smallblock. Here it sits so far..2.8 is about dead its had a very rough life lol.

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post #2 of 32 Old 03-05-2019, 07:52 AM
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Re: Anyone willing to help me with doin a motor swap?

Not sure on the 3.4, if you can use your oilpan should be a bolt in. If you go sbc you'll need headers, mounts, and a 4wd swap pan. You can buy one or make one if you have a tig or true mig welder. After that it's just another swap.
Your 93 looked to be in a lot better shape.
Sorta looks like you're wanting to do a heart transplant on a patient with terminal cancer.
In some cases the best swap is where you swap the plates onto another truck.
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post #3 of 32 Old 03-05-2019, 08:40 AM
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Re: Anyone willing to help me with doin a motor swap?

Unless you really want a V8 the 3.4 is basically a bolt-in swap. I put one in my 87 2wd blazer, 160 hp and more if you add a 4.3 tbi and economical Dyno-max cat-back. In my opinion, the 3.4 was the only engine the factory should have used in the first gen.
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post #4 of 32 Old 03-05-2019, 03:52 PM
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Re: Anyone willing to help me with doin a motor swap?

What years 3.4 will his 1985 4wd oilpan fit? 2wd pan will likely hit front differential.
Will his deeper oil pump pickup bolt onto the 3.4 oil pump?
How big of a project is it to add TBI to the electrical and fuel systems of an 85?
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post #5 of 32 Old 03-05-2019, 04:16 PM
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Re: Anyone willing to help me with doin a motor swap?

Quote:
Originally Posted by oldeerslayer View Post
What years 3.4 will his 1985 4wd oilpan fit? 2wd pan will likely hit front differential.
Will his deeper oil pump pickup bolt onto the 3.4 oil pump?
How big of a project is it to add TBI to the electrical and fuel systems of an 85?
Mine was a 2wd but there're guys on here that did the 4x4...speak up!
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post #6 of 32 Old 03-05-2019, 04:53 PM
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Re: Anyone willing to help me with doin a motor swap?

I did a swap many moons ago,probably the first 3.4 swap.
94 3.4 into a 83 S10 Blazer 4x4.
I had to reuse the oil pan from the 2.8 as well as the flywheel(had it rebalanced)
I tried a flywheel from a 93? 2.8 GMC but the clutch didnt last,so went back to the

2.8 which was a manual clutch.
pan and pickup tube fit just fine.


I still have the 3.4 pan I pulled off,the motor had 2K on it.


Look under old user name Losixxxnt
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post #7 of 32 Old 03-05-2019, 11:51 PM Thread Starter
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Thanks everyone. Ive been interested in the 3.4. Ive done the v8 in a 2wd with good results ,but 4wd swap is new to me. So mostly a bolt in operation ? Oldeerslayer those were sone of my beggining questions also.It is a cancer patient,but just for fishing wheeling and fun. This thing will be offroad mostly .What years 60 motors will bolt up to tranny,balancing flywheel,oil pickup,just what I will need etc. This site is great and the info is priceless. Knowledge and experience .Ive got the money and a decent shop. Im wanting to get the 3.4 and beast it. Crank,rods,pistons,heads,the works...how much hp can a guy get building a 3.4 the right way ?
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post #8 of 32 Old 03-06-2019, 04:08 PM
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Re: Anyone willing to help me with doin a motor swap?

Pretty sure all 60 degree engines have the GM metric bell housing. They got these all the way up to 3.9L and 240hp/240lb ft. in the LZ9. That engine would take a lot of work to put in though. Some of the internals may be interchangeable.




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post #9 of 32 Old 03-07-2019, 07:04 PM
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Re: Anyone willing to help me with doin a motor swap?

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Originally Posted by manbearpig View Post
Pretty sure all 60 degree engines have the GM metric bell housing. They got these all the way up to 3.9L and 240hp/240lb ft. in the LZ9. That engine would take a lot of work to put in though. Some of the internals may be interchangeable.
Yes, all GM 60 degree V6 engines use the small corporate pattern.

No, nothing internally of the 3.9 is interchangable with older 60 degree V6s.

Wadebarnhart: The only directly interchangable 60 degree V6s are the RWD 2.8, 3.1 and 3.4 found in S10s and F-bodies up to 1994. There were some changes in those years, that the most difficult part to be aware of is whether they are internally or externally balanced.
There's some disagreement on what year became internally balanced. Everything I've come across and seen myself says that 1987 is when the change to internally balanced happened. Some will say it was 1988. All 3.1 and 3.4s are internally balanced.

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post #10 of 32 Old 03-07-2019, 07:19 PM
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Re: Anyone willing to help me with doin a motor swap?

I considered the later model Buick 3.8 for a first gen swap because I had one and it has the 2.8 metric pattern but the 3.4 was a drop-in. Someone on this forum did the 3.8 swap, the name RedTruck seems to come to mind.
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post #11 of 32 Old 03-07-2019, 08:39 PM
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Re: Anyone willing to help me with doin a motor swap?

someone is doing an L67 3.8 swap now.
for a 4x4 the 3.4 makes the most sense.
everything about a 4x4 swap is hard.
best advise is to drop the front differential,put motor and trans in,then put the diff back in.
All my notes say that 86 was last year for external balance and v belts
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post #12 of 32 Old 03-08-2019, 03:21 AM Thread Starter
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I am listening guys thats why im here. My idea is to get a donor engine...3.4. Give me some makes and models to call the salvage yard with. Ill get the motor and then tear it down to block to start with.Ive got the tools,shop and mechanical skills to do this. Knowledge and experience is always king though and I love to learn 👍
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post #13 of 32 Old 03-08-2019, 12:34 PM
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86 is the ******* child year. 87 up style sealing surface for the pan and front cover but standard rotation water pump. Also 86 used a v-belt and ribbed belt combo. The ribbed belt however I do not think used a tensioner system.

Pans are easy. 82-85 are one style. 86 on are the same

Front covers are 82-85 one design, 86 one design and 87-93 one design. 82-85 will not work on 86-93. 86 will work on 3.4 with v belts. 87 on requires serpentine setup.

Belt setups. 82-85 v-belt. 86 bastard child year 2 belt, 87-93 all serpentine.

Water pumps. 82-85 and 86 are same. 87 on use reverse design. They won’t bolt up so you can’t mess this up. Where you CAN screw up is putting an 87-93 front cover on and the 87-93 pump. While this will bolt up, with v belts it will run hot because the flow is backward.

In short, the only cover you can use is the 86 unless you can swap accessories to serpentine. That’s what I did.



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post #14 of 32 Old 03-13-2019, 07:32 PM
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Re: Anyone willing to help me with doin a motor swap?

Hi all,

I am new here. I just got a like new one owner, 1987 S-10 Blazer Tahoe edition, 2.8 V6, 4X4, with 61K original virgin unmolested, garage kept, senior citizen driven miles. It was from an estate sale from a dealer in Georgia. The paint (2 tone blue) is all original and super clean and the interior looks like it was almost not even sat in. The Engine compartment looks like it is new. It is a real survivor, I replaced the dried up speakers and put in new LED tail lights and LED reverse bulbs.

The power door locks need to be fixed. The Vacuum to the 4X4 needs to be fixed. There is a crease by the passenger side front wheel opening molding. This thing is mint BUT the 2.8 is worse than a slug. My daughters 4 cyl Hyundai is like a rocket ship compared to it.

It is too nice to mess it up and shoehorn a V8 swap in it. I would consider having someone that knows what they are doing put in the 2019 Chevrolet 4 cyl Silverado 310 Hp motor in it, if it can be easily done, or maybe the new Colorado small V6 Diesel or maybe a new 4.3 Vortec (they are like 285HP) in it. I love it, but if it can not be made to perform decent I will consider it bad $$$$ 10K +++ spent and it will be for sale.

If there is someone here that can take on the project and not marry it, pleeeeeeez call me, nine five four area code. Then four six one. Last is nine nine four zero.

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post #15 of 32 Old 03-13-2019, 09:17 PM
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Re: Anyone willing to help me with doin a motor swap?

Wiring that new of a motor can be a real can of worms. Contact CPW to see what they think. May require some special fuel system also as those are direct injected. Not to be confused with direct port injection. I don't have any idea how that works. It also has DOHC and AFM.
The Dual volute turbochargers will make exhaust fun, also. Then there is the matter of the 8 speed automatic is should be mated with.
Personally, trying to put the newest highest tech engine on the market into an 87 Blazer sounds like something only GM engineers could pull off.
It hasn't been on the market long enough to even be seriously de-bugged. I'm sure there will be a recall or 3.

Although you are opposed to putting a SBC in it. Thousands have been done and I'm sure you could find a shop with a good rep capable of doing a really clean install while keeping all the 87 optional equipment functional.
Try Fantomworks. They'll for sure do it right. Get their opinion on the 2019 4 banger.
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post #16 of 32 Old 03-13-2019, 09:39 PM
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Re: Anyone willing to help me with doin a motor swap?

Wow, you'll need more money than you'd think to pull that off, and then to pay someone else to do it? Might as well sell it and buy something ready to go.




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post #17 of 32 Old 03-13-2019, 09:45 PM
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Re: Anyone willing to help me with doin a motor swap?

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Try Fantomworks. They'll for sure do it right. Get their opinion on the 2019 4 banger.
Are you talking about the tv show Fantomworks? I've watched a number of their episodes. Lots of flaws and shortcuts on the vehicles they work on.

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post #18 of 32 Old 03-13-2019, 09:49 PM
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Re: Anyone willing to help me with doin a motor swap?

Did a little research on how DI works.
Quote:
DI fuel systems are substantial in their design because they usually generate and hold fuel pressurized at a whopping 2,200 psi or more (the DI fuel rail tube often has about a 1/8-inch wall thickness to handle these extreme pressures) rather than the 40 to 60 psi common in port injection. These extremely high pressures allow the injector to flow enough fuel to achieve stoichiometric combustion (the desired 14:1 ratio of fuel and air) in a little less than half the number of degrees of crank rotation as compared with a port fuel injection engine.
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Re: Anyone willing to help me with doin a motor swap?

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Are you talking about the tv show Fantomworks? I've watched a number of their episodes. Lots of flaws and shortcuts on the vehicles they work on.
I'm sure cliff70chevy is open to suggestions for a better qualified shop.
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post #20 of 32 Old 03-13-2019, 10:02 PM
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Re: Anyone willing to help me with doin a motor swap?

I'm kinda agreeing with manbearpig...

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post #21 of 32 Old 03-13-2019, 10:26 PM
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Re: Anyone willing to help me with doin a motor swap?

I agree. Buy a 2019 4cyl Silverado.
Can't wait to see the depreciation on those. BTW they don't get very good gas mileage. 300+ HP eats gas whether it's a 2.7 or 6.0.
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post #22 of 32 Old 03-13-2019, 10:30 PM
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Re: Anyone willing to help me with doin a motor swap?

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I'm sure cliff70chevy is open to suggestions for a better qualified shop.

Just my opinion from what I've seen.

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post #23 of 32 Old 03-13-2019, 10:37 PM
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Re: Anyone willing to help me with doin a motor swap?

I was just looking at their website. I love this notice, probably because I too have a GSD.

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Please note: We have a large Alpha female German Shepard, Heidi, that guards the grounds here at FantomWorks. She is great at her job and a third of the time she gets along with other dogs, a third of the time there are fights and occasionally visiting pets disappear. So, we love pets but please do not bring your pet as we cannot guarantee that Heidi will get along with them.
I have the same issue when a neighbor comes over on his ATV and his Dachsund or his wifes ankle biter follows. Fortunately my dog does obey the command STOP.
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post #24 of 32 Old 03-14-2019, 12:59 AM Thread Starter
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Thanks for the info jimmykicker. Thats what im needing is basic usable years and any mods. Balanced flywheels,....will my accesories(mounts for alt,power steering etc.) from 2.8 bolt on 3.4 ? Water pump rotations any of that so im not buying useless parts. Im ready to buy a motor and start tearing it down. When i call the yard i want to know what im talking about.
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post #25 of 32 Old 04-18-2019, 02:00 PM Thread Starter
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Will this motor swap in? What will i need to do this? Will my 2.8 intake and all bolt up ? Still have the oil pan question 4x4 bolt on ? Need to buy one ?
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post #26 of 32 Old 04-18-2019, 04:56 PM
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Re: Anyone willing to help me with doin a motor swap?

I would keep that intake and reap the benefits of SFI and DIS.




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post #27 of 32 Old 04-18-2019, 10:15 PM Thread Starter
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Thats a whole other can of worms though right ? How hard would it be ? Im carbed 2.8 right now....
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post #28 of 32 Old 04-19-2019, 01:45 PM
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Re: Anyone willing to help me with doin a motor swap?

Really depends on how good you are with electrical. You would probably need an entire car to pull parts off of, or at least it would probably cheaper that way. I've seen pictures of S-10s with that intake so I know it's been done.


If you are looking for something quick and easy, probably not the best route.




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post #29 of 32 Old 04-19-2019, 02:29 PM Thread Starter
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Im an older gearhead. I can build a complete harness if i needed but not wanting to. I like my carbs for simple reasons . the motor i posted is in a 94 camaro. I would like to stay as simple as i can. I plan on building that 3.4 pretty stout(check out my other build..93 w/350 vortec), but I definitely want to start out on the right foot.
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post #30 of 32 Old 04-19-2019, 03:55 PM
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Re: Anyone willing to help me with doin a motor swap?

I understand. I've never done the swap myself, but I do believe that is the block you are looking for.




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post #31 of 32 Old 04-19-2019, 04:06 PM Thread Starter
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Right on manbearpig .I have also seen those intakes in other s10s bit wanna stay carb. It will be worth watching the build once I pull that 3.4 from the donor. Anyone have links to good performance parts for the 3.4 ? Keep in mind this is 4x4 4spd. Thanks in advance 👍
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post #32 of 32 Old 04-19-2019, 04:20 PM
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Re: Anyone willing to help me with doin a motor swap?

Have you read this?


https://www.s10forum.com/forum/f106/...4-carb-619850/


If you search "3.4" there looks to be lots of useful threads.


Here's a 4x4 one:


https://www.s10forum.com/forum/f106/...4-swap-824489/




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