Hello all
I'm looking for the best stock 2X4 Chrysler early hemi manifold. I believe that they made two different kinds. Anybody have any ideas, part numbers, or even a "feel" for this?
I'm going to have a 380 cid. EMC "dyno mule" engine "left over and looking for a job", and I'd like to screw on a factory 2X4 iron manifold (suitably opened up) with modern carburetors, stock 4 bolt exhaust manifolds, and stock valve covers (with spacers). Should be a fun deal. Probably make good power.
Thanks, Danny
P.S. I have a stock DeSoto 2X4 manifold with the original carburetors and linkage (1956 341, I believe). Need a 2X4 Chrysler manifold and 4 bolt exhaust manifolds.
2X4 factory hemi manifolds
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DavidBraley
- Posts: 163
- Joined: Sat Jan 30, 2010 7:40 pm
- Location: Fort Collins, Colorado
Re: 2X4 factory hemi manifolds
Last edited by DavidBraley on Sat Jan 01, 2011 6:59 pm, edited 1 time in total.
Horsepower determines how fast you hit the wall. Torque determines the size of the hole you make. Holzwarth's Law
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DavidBraley
- Posts: 163
- Joined: Sat Jan 30, 2010 7:40 pm
- Location: Fort Collins, Colorado
Re: 2X4 factory hemi manifolds
Hi Dan,
I pulled out Leo's book, and it looks like there are three styles of factory 2 x 4 intakes. And if not three distinct styles, at least three casting numbers.
The 1955 (331 powered 300A) used casting number 1634285.
The 1956 (354 powered 300B) used casting number 1731686
Both 1957 (392 powered 300C) and 1958 (392 powered 300D) used the same casting number 1733477.
We know that the Carter WCFB carb (some claim it's about 385 CFM) was used by Chrysler in their dual 4 setups from 1955 to 1957. But I found a thread online a while ago that in 1958, they started to use the slightly larger CFM rated Carter AFB (some claim about 450 CFM) in the 300D and what they called the "Power Package" option for the New Yorker and Imperial. Leo's book shows only the WCFB for 58, so what I found might be junk. There's no junk in the internet! I'll see if I can find the source..... I personally would trust Leo's work first.
My guts tell me (and that's not backed by any experience!) you want the later 1733477 intake.
My two cents. I hope that helps.
David
I pulled out Leo's book, and it looks like there are three styles of factory 2 x 4 intakes. And if not three distinct styles, at least three casting numbers.
The 1955 (331 powered 300A) used casting number 1634285.
The 1956 (354 powered 300B) used casting number 1731686
Both 1957 (392 powered 300C) and 1958 (392 powered 300D) used the same casting number 1733477.
We know that the Carter WCFB carb (some claim it's about 385 CFM) was used by Chrysler in their dual 4 setups from 1955 to 1957. But I found a thread online a while ago that in 1958, they started to use the slightly larger CFM rated Carter AFB (some claim about 450 CFM) in the 300D and what they called the "Power Package" option for the New Yorker and Imperial. Leo's book shows only the WCFB for 58, so what I found might be junk. There's no junk in the internet! I'll see if I can find the source..... I personally would trust Leo's work first.
My guts tell me (and that's not backed by any experience!) you want the later 1733477 intake.
My two cents. I hope that helps.
David
Horsepower determines how fast you hit the wall. Torque determines the size of the hole you make. Holzwarth's Law
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DavidBraley
- Posts: 163
- Joined: Sat Jan 30, 2010 7:40 pm
- Location: Fort Collins, Colorado
Re: 2X4 factory hemi manifolds
Found the link. See the text on the second image down in the article. I OBVIOUSLY miss-read what the author was trying to say. The junk information was me. 
He mentions that Chrysler started to use the larger AFB with the introduction of the 392. He must have been talking about using it for the single four barrel setup. Makes more sense because Leo's book supports that.
http://www.mre-books.com/sa130/sa130_2.html
David
He mentions that Chrysler started to use the larger AFB with the introduction of the 392. He must have been talking about using it for the single four barrel setup. Makes more sense because Leo's book supports that.http://www.mre-books.com/sa130/sa130_2.html
David
Horsepower determines how fast you hit the wall. Torque determines the size of the hole you make. Holzwarth's Law
Re: 2X4 factory hemi manifolds
The 55=56s are probably best, the 392 stuff is a bit squished down for hood clearance. There's a thread @ www.forwardlook.net that some guy has some repop 4 boly ex mans.
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dan miller
- Posts: 86
- Joined: Wed Dec 27, 2006 5:05 am
Re: 2X4 factory hemi manifolds
Hello all. Thanks for the info.
I've spoken to several folks who are very savvy in all things early hemi. All three have advised that the '55-'56 log type manifolds are better than the '58-'58 manifolds.
None of them mentioned that the '55's and '56's are different. The '55 331's have larger ports, so I'd suspect that those manifolds would be better.
I'll continue to research and will advise.
Thanks again, Danny
I've spoken to several folks who are very savvy in all things early hemi. All three have advised that the '55-'56 log type manifolds are better than the '58-'58 manifolds.
None of them mentioned that the '55's and '56's are different. The '55 331's have larger ports, so I'd suspect that those manifolds would be better.
I'll continue to research and will advise.
Thanks again, Danny