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02-23-2012, 12:22 PM
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#1 |
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Junior Member
Join Date: Mar 2007
Location: Hideaway, TX
Posts: 4,950
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v6 to SBC question
Are the motor mounts for the 4.3 V6 the same as the small block?
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71 Suburban 350/700R4 Project Trixie 72 CHEVY,Highlander,SWB,396,T400 |
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02-23-2012, 01:51 PM
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#2 |
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Slots go on anything!
Join Date: May 2003
Location: Richardson, TX
Posts: 5,957
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Re: v6 to SBC question
They should be the same. All of your accessories should swap over, too.
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1974 Jimmy- 5.3/4L80e/NP241 |
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02-23-2012, 09:23 PM
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#3 |
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Registered User
Join Date: Sep 2011
Location: Chesterfield, Va.
Posts: 339
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Re: v6 to SBC question
Not in an 86....
I just got done with the 4.3 to 350 swap on my 86 c10. Here's what I dealt with.... Go to boneyard and get L6/V8 frame pedistals for motor mounts to bolt to (V6 is different ) V8 motor mounts & clamshells ( V6 clamshells different ). The trans. can bolt up to the V8 Ok. Flywheel depends on whether you are running 2 piece rear main or 1 piece engine. If you run full length headers, the drivers side exits straight into the crossmember and you will need to get custom exh. None of my local custom muffler shops would touch it because they said that because I changed the engine, it did not conform to the factory emissions standards. Summit has a kit # WLK-89007 that fit like a glove. Took me about an hour to install it. I was able to reuse the pullies, brackets and stuff for the alt, PS, stuff. Throttle cable did ok as my 4.3 was a QJ. New radiator, then I ran a dual electric fan setup. Of course different hoses for cooling system Probably a few other misc. things I am forgetting. Last edited by Weasel Diesel; 02-23-2012 at 09:33 PM. |
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02-23-2012, 11:30 PM
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#4 |
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Account Suspended
Join Date: Dec 2008
Location: indisclosed
Posts: 1,515
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Re: v6 to SBC question
But let's say you're using the stock 6cyl exhaust manifolds---will it interchange with the v-8 stuff?
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02-24-2012, 02:14 AM
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#5 |
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Registered User
Join Date: Feb 2012
Location: Mankato MN
Posts: 30
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Re: v6 to SBC question
No. The v6 exh manifolds will not mount on a
V8. Posted via Mobile Device |
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02-24-2012, 09:29 AM
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#6 |
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Robert Olson Transport
 
Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,313
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Re: v6 to SBC question
IIRC as its been about 8 years since i did this i was able to use my mounts but i had to buy the v8 Y pipe and use that with the stock exhaust from the 6
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Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! |
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02-24-2012, 11:49 AM
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#7 |
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Junior Member
Join Date: Mar 2007
Location: Hideaway, TX
Posts: 4,950
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Re: v6 to SBC question
I guess it would be smart to just buy a used set of V8 mounts to avoid any potential trouble. Do you move the mounts to differnt holes when you do the swap or are yall positioning the V8 in the same spot the v6 was in?
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71 Suburban 350/700R4 Project Trixie 72 CHEVY,Highlander,SWB,396,T400 |
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03-18-2012, 12:48 PM
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#8 |
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Account Suspended
Join Date: Dec 2008
Location: indisclosed
Posts: 1,515
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Re: v6 to SBC question
What i meant was, will the 8's manifolds bolt to the six's exhaust system----y-pipe?
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