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#1 |
Registered User
Join Date: Jun 2012
Location: west mi.
Posts: 89
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1986 v6 4x4
Hey guys I am looking at a 86 4x4 with a dead v6.
What is needed for the swap to a v8? Are the motor/frame mounts the same? I would assume it is a 4.3 so the accessories are probably the same(water pump,pulleys,power steering,ac stuff?) thanks |
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#2 |
Registered User
Join Date: May 2010
Location: Rochester NY
Posts: 831
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Re: 1986 v6 4x4
Mounts are the same. You just need to move them on the frame. I cant remember if they slide forward or back.
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1973 k20 Suburban 350 1974 Custom stepside c-10 250 1975 Chevy stepside 454 1986 K30 Crewcab SRW 350 R.I.P- glimmertwin01- board member and good friend, you will be missed |
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#3 |
Registered User
Join Date: Mar 2015
Location: Grand Junction,Co
Posts: 6
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Re: 1986 v6 4x4
^^ yes the mounts are the same and it is really easy to convert.
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#4 |
Registered User
Join Date: Jun 2009
Location: Oroville, CA
Posts: 4,827
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Re: 1986 v6 4x4
I just did the conversion from V6 to V8 on an 85 4x4. The motor mount towers are different on the V6. You need the V8 towers that bolt to the 4x4 engine cross member.
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#5 |
Registered User
Join Date: Jun 2012
Location: west mi.
Posts: 89
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Re: 1986 v6 4x4
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#6 |
Registered User
Join Date: Jun 2012
Location: west mi.
Posts: 89
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Re: 1986 v6 4x4
Is the 700r4 v6 trans the same internally as the v8 ?
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#7 |
Registered User
Join Date: Jun 2009
Location: Oroville, CA
Posts: 4,827
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Re: 1986 v6 4x4
I can't remember on the clam shells from the engine. I pulled the V6 out of the truck and sent it for scrap metal. I then compared the towers on this truck to a V8 truck and they were different, but the cross member was the same. I removed the V6 towers from the truck and installed the V8 towers with the V8 rubber motor mounts still attached to the towers as they were nice and tight. I used the Clam shells that came with the V8 replacement engine. It bolted up perfect and bolted up to the 700R4 and torque converter that was already in the truck. This truck runs and drives great! Of course after erasing all of the smog equipment and problematic feedback carburetor, distributor, and stock smog wiring.
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#8 |
Registered User
Join Date: Jan 2009
Location: Louisville,Ky
Posts: 5,811
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Re: 1986 v6 4x4
The 4.3 is a v8 they cut two cylinders off it.The s10s i have done the same kinda swap on everything bolted over and right in no problem should be the same for your truck.
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#9 |
Registered User
![]() Join Date: Nov 2010
Location: Belfair, Wa
Posts: 477
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Re: 1986 v6 4x4
They actually made v6 four wheel drives?
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#10 |
Registered User
Join Date: Jan 2009
Location: Louisville,Ky
Posts: 5,811
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Re: 1986 v6 4x4
Not real sure on that but wouldn't shock me,I know they did in the next body style the 88-98 trucks.
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#11 |
Registered User
Join Date: Apr 2014
Location: Cunningham, KY
Posts: 351
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Re: 1986 v6 4x4
Both Chevy and ford produced 4x4's with V6 engines, while dodge did not, at least not in a full size truck. Having owned a full size dodge with a V6 in it.....there was good reason for that....the 3.9 sucked and did not have enough power for a full size truck......but I digress...
I had a friend back in high school and his dad owned a few different Chevy 4x's with V6's in them....he never complained about the smaller engine and back in those days no one complained about gas mileage, but I can't imagine it was real good. |
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#12 |
Robert Olson Transport
![]() Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,288
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Re: 1986 v6 4x4
im also thinking you will need a v8 fan shroud and the proper hoses I do believe you can still use the radiator but it is a simple swap ive done this before
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#13 |
Registered User
Join Date: Jan 2009
Location: Louisville,Ky
Posts: 5,811
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Re: 1986 v6 4x4
That im not sure on and not sure if the torque converter is the same or different.
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