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Converting 2bbl intake manifold to 4bbl
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   Forward Look Technical Discussions -> Engine, Exhaust, Fuel and IgnitionMessage format
 
JGC403
Posted 2019-03-02 4:21 PM (#578781)
Subject: Converting 2bbl intake manifold to 4bbl


Member

Posts: 18

Location: GREENEVILLE, TN
I read somewhere some was converting 2bbl manifolds into 4bbl manifolds by cutting out the 2bbl carb mounting flange and welding in a 4bbl flange. Has anyone else seen/ heard of this, or know what I'm talking about? Would like to convert my '57 DeSoto to 4bbl, can't use the aluminum intake from Hot Heads since its to tall and I don't think it will clear the hood on the DeSoto, and haven't been able to find a OEM 4bbl for a DeSoto yet.
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56D500boy
Posted 2019-03-02 4:43 PM (#578785 - in reply to #578781)
Subject: RE: Converting 2bbl intake manifold to 4bbl



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Posts: 4377
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Location: Lower Mainland BC
I know nothing. However, I am *guessing* that it won't be easy to go from this:



to something like this (without a friendly, knowledgible and inexpensive machine shop):

(Not sure if this eBay listing is what you need or not: https://www.ebay.ca/itm/57-58-CHRYSLER-MOPAR-DODGE-DESOTO-PLYMOUTH-H... )



Edited by 56D500boy 2019-03-02 4:45 PM
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Powerflite
Posted 2019-03-02 7:04 PM (#578790 - in reply to #578781)
Subject: Re: Converting 2bbl intake manifold to 4bbl



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Posts: 5154
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Location: So. California
Very doable now with good nickel welding wire. Heat the manifold up with a torch before you weld it too. Also possible to braze it together with a torch. Make sure the left and right ports remain isolated as they are now. The easy way to do it is to weld it to the top of your manifold and just drill holes in the right locations. But this does add some height to your carburetor. If you wanted to cut up a Chrysler intake I have a couple of them I would be willing to cut up for you if you pay me $100 in advance. But it would be easier IF you can find a steel flange already to go.
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Mopar1
Posted 2019-03-04 6:49 AM (#578850 - in reply to #578790)
Subject: Re: Converting 2bbl intake manifold to 4bbl



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Posts: 2716
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Location: N.W. Fla.
T. R. Waters is/was doing this. Contact him, not everything he has is on his site.
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