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57 325 poly. want to convert to 4 bbl. any suggestions?
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echodish@netins.net
Posted 2017-07-28 2:10 PM (#545040)
Subject: 57 325 poly. want to convert to 4 bbl. any suggestions?


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Posts: 19

Thoughts or help on switching to a 4bbl intake and carb on a 57 custom royal 4dr lancer.
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57chizler
Posted 2017-07-28 2:33 PM (#545043 - in reply to #545040)
Subject: RE: 57 325 poly. want to convert to 4 bbl. any suggestions?



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Welcome to the board.

First you'll need a 4-barrel intake manifold casting number 1634262...used on both the 315 and 325. Once you have the manifold you can decide whether to use the original carb or use an adapter plate for a modern Edelbrock.
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Powerflite
Posted 2017-07-28 2:46 PM (#545045 - in reply to #545043)
Subject: RE: 57 325 poly. want to convert to 4 bbl. any suggestions?



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Yes, unfortunately, no aftermarket single 4 manifolds are available. You can get a six pack or dual quad, but no single 4bbl. The 2bbl carb just started puking on my '58 Dodge so I will be doing the conversion soon too.
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Greg P.
Posted 2017-07-28 5:36 PM (#545052 - in reply to #545040)
Subject: RE: 57 325 poly. want to convert to 4 bbl. any suggestions?



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Dodge offered the D-67 Power Package for the 325 engine in 1957 which I believe included the 4bbl carb and dual exhausts. The correct carburetor for this setup is the Carter WCFB model 2532s. The carbs and manifolds show up for sale from time to time on eBay. You could use a different carb, but if you go with an AFB or the Edelbrock clone, it won't fit the small WCFB mounting without an adapter.

I did the upgrade to the WCFB on my 57 Firesweep many years ago using a manifold from a 57 dodge that I found in a junkyard. It wasn't hard to do, though I can't say it improved the performance by any great amount.

This thread may help too:http://www.forwardlook.net/forums/forums/thread-view.asp?tid=64021&posts=11&highlight=2532s&highlightmode=1#M529236

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echodish@netins.net
Posted 2017-07-31 10:58 AM (#545229 - in reply to #545040)
Subject: Re: 57 325 poly. want to convert to 4 bbl. any suggestions?


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Posts: 19

Thanks guys. the six pack sounds sweet, however probably not worth the cost, effort, or results with a stock 325 I'm assuming. I'll start the search for a factory intake.
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56D500boy
Posted 2017-07-31 1:24 PM (#545238 - in reply to #545043)
Subject: RE: 57 325 poly. want to convert to 4 bbl. any suggestions?



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57chizler - 2017-07-28 2:33 PM First you'll need a 4-barrel intake manifold casting number 1634262...used on both the 315 and 325. Once you have the manifold you can decide whether to use the original carb or use an adapter plate for a modern Edelbrock.


Hmm....I didn't find that PN in the 55-58 Parts Manual. I get more like 1639 769 for a 56 and 1735 774 for a 57.



Edited by 56D500boy 2017-07-31 1:32 PM




(IntakeManifoldPNs.jpg)



Attachments
----------------
Attachments IntakeManifoldPNs.jpg (248KB - 171 downloads)
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jboymechanic
Posted 2017-07-31 1:30 PM (#545239 - in reply to #545040)
Subject: Re: 57 325 poly. want to convert to 4 bbl. any suggestions?



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I put an Edelbrock 500 cfm carb on my 318 Poly and so far I have been happy. Starts easy, idles smooth and is responsive.
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Mopar1
Posted 2017-07-31 10:57 PM (#545269 - in reply to #545239)
Subject: Re: 57 325 poly. want to convert to 4 bbl. any suggestions?



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If you can't find one on EBay or elsewhere T R Waters has modified 2 bl intakes in to 4 bl if originality isn't important. He was a moded DeSoto intake listed for $275. He might mod a Dodge one for you (OEM or aftermarket).
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mstrug
Posted 2017-08-01 9:54 PM (#545343 - in reply to #545269)
Subject: Re: 57 325 poly. want to convert to 4 bbl. any suggestions?



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https://www.facebook.com/groups/ForwardLook/permalink/10154993258789...
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echodish@netins.net
Posted 2017-08-02 10:46 AM (#545360 - in reply to #545343)
Subject: Re: 57 325 poly. want to convert to 4 bbl. any suggestions?


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Posts: 19

mstrug - 2017-08-01 9:54 PM

Thank you. I just messaged him about it.


https://www.facebook.com/groups/ForwardLook/permalink/10154993258789...
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echodish@netins.net
Posted 2017-08-02 10:57 AM (#545362 - in reply to #545052)
Subject: RE: 57 325 poly. want to convert to 4 bbl. any suggestions?


Member

Posts: 19

Are there any carbs that would bolt in? Holley, Edelb, etc? What is the bolt pattern for this 4 bbl intake? would this adapter on ebay work? http://www.ebay.com/itm/Carb-Carburetor-Adapter-3-or-4bbl-Holley-Sq...
It Adapts 4 bolt manifold or carburetor 5-5/8" x 5-1/8" to 4 bolt manifold or carburetor 5-5/8" x 4-1/4"

Edited by echodish@netins.net 2017-08-02 11:04 AM
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Powerflite
Posted 2017-08-02 12:56 PM (#545368 - in reply to #545362)
Subject: RE: 57 325 poly. want to convert to 4 bbl. any suggestions?



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Yes, that adapter will convert it to use a newer 4bbl. Or you can re-drill the manifold like the one in the link above. The bosses for the larger pattern are already there. After that, you would also need to enlarge the throttle plate openings.
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Mopar1
Posted 2017-08-02 3:44 PM (#545375 - in reply to #545368)
Subject: Re: 57 325 poly. want to convert to 4 bbl. any suggestions?



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There is an adaptor that necks down from modern to OEM size bore holes. Not sure about the Dodges, but the Chr hemi intakes you can bore through the adaptor & intake to match exactly the bore size you need for your carb. If you use an edelbrock carb it is drilled for the stud pattern on the chrs. The Holly isn't. All you have to do is unscrew the OEM studs & replace with longer ones. On my last 331 I used the adaptor plate and later added a phenolic spacer on top of it with the Edel carb.
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mstrug
Posted 2017-08-02 5:40 PM (#545384 - in reply to #545360)
Subject: Re: 57 325 poly. want to convert to 4 bbl. any suggestions?



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echodish@netins.net - 2017-08-02 9:46 AM

mstrug - 2017-08-01 9:54 PM

Thank you. I just messaged him about it.


https://www.facebook.com/groups/ForwardLook/permalink/10154993258789...

Great: hope you get it! Marc.
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57chizler
Posted 2017-08-03 1:26 PM (#545491 - in reply to #545238)
Subject: RE: 57 325 poly. want to convert to 4 bbl. any suggestions?



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56D500boy - 2017-07-31 10:24 AM

57chizler - 2017-07-28 2:33 PM First you'll need a 4-barrel intake manifold casting number 1634262...used on both the 315 and 325. Once you have the manifold you can decide whether to use the original carb or use an adapter plate for a modern Edelbrock.


Hmm....I didn't find that PN in the 55-58 Parts Manual. I get more like 1639 769 for a 56 and 1735 774 for a 57.



Again, part numbers (in the book) aren't always the same as the casting number on the part. Pic below is of the 4-barrel intake on my 325 Poly; the January '56 casting date means it was installed on a 315.



(325 Poly 4 BBL Intake.JPG)



Attachments
----------------
Attachments 325 Poly 4 BBL Intake.JPG (166KB - 177 downloads)
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echodish@netins.net
Posted 2017-08-04 11:42 AM (#545563 - in reply to #545384)
Subject: Re: 57 325 poly. want to convert to 4 bbl. any suggestions?


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Posts: 19

mstrug - 2017-08-02 5:40 PM

echodish@netins.net - 2017-08-02 9:46 AM

mstrug - 2017-08-01 9:54 PM

Thank you. I just messaged him about it.


https://www.facebook.com/groups/ForwardLook/permalink/10154993258789...

Great: hope you get it! Marc.


He had it sold right away. went over seas.... Oh well. thx anyway/
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wayfarer
Posted 2017-08-05 10:54 AM (#545628 - in reply to #545563)
Subject: Re: 57 325 poly. want to convert to 4 bbl. any suggestions?



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No guarantees on this....Darrell Miller in Grants Pass Oregon has been referenced on occasion as having a collection of Mopar odds-n-sods so it might be worth a phone call...541- 474-1948
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arizona mopar gold
Posted 2017-08-07 3:36 AM (#545734 - in reply to #545040)
Subject: Re: 57 325 poly. want to convert to 4 bbl. any suggestions?



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Being a 57 Custom royal Lancer it should already have a 325 4bbl engine with dual exhaust as standard issue
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58coronet
Posted 2017-09-18 8:47 PM (#548665 - in reply to #545040)
Subject: Re: 57 325 poly. want to convert to 4 bbl. any suggestions?


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Wrong. 58 Custom Royals all had either the 350 or 361 B engines. The 325 was not available on Custom Royals or any 58 Dodge wagons.
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58coronet
Posted 2017-09-18 8:49 PM (#548666 - in reply to #545040)
Subject: Re: 57 325 poly. want to convert to 4 bbl. any suggestions?


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Sorry, I thought we were talking about a 58.
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