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Old 10-10-2010, 08:01 PM
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Early Hemi: Carb flange mods on intake manifold?

Hello,

I'm building an '54 Chrysler 331 hemi. I just picked up a '54 4bbl intake for it. It has the small 4bbl holes & flange. I need to open it up to accept a late model carb. Has anyone done this before? Is it possible to do by hand?

Here are a couple of generic photos which is how I want my intake to look. One is the untouched intake, & the other one has been opened up.

Thx!

before


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Old 10-10-2010, 08:13 PM
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No pics on my end
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Old 10-10-2010, 08:23 PM
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Sorry, how's this?

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Old 10-10-2010, 08:50 PM
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I had the same problem and this is what I did. Picked up an adaptor for small WCFB to AFB off E-bay for about $20. I then cut a phenolic spacer that was the same thickness to fit inside the adapter. I then had the manifold machined to match the spacer's holes. Worked perfectly.

Here you can see the difference in location and size of the AFB's throttle bores compared to the WCFB's.



Here is what the manifold looked like after having the holes opened up. You have to be careful and do it this way as there is a water passage between the front and rear holes. If you just hog it out you'll have to weld up the center section.



Here is the finished product. With the aluminum and phenolic spacers installed ready for the AFB.



By the way.... the photo you showed is NOT a '54 intake. The 54 had the thermostat housing integral with the intake manifold. However, if you're using 55 and later heads that use the water crossover manifold you can use that one. If you are using the later heads then all you need to do is pick up a later 354 or 392 intake. They used the AFB and won't require any modifications. I have one out in the shop that I picked up the last time I visited Bob Walker at Hotheads.


Last edited by Centerline; 10-10-2010 at 09:01 PM.
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Old 10-10-2010, 09:03 PM
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So there's a water passage? I'm glad I posted this before I started grinding on it.

Here's mine



I looked at your website. I'm gonna have a lot of questions for you when I start tearing into the motor. I actually have a '52 331, but I picked up a set of 54 oval port heads & the 4bbl intake.



BTW, this hemi will go into my '59 Chevy pickup (below)


Last edited by tjet; 10-10-2010 at 09:12 PM.
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Old 10-10-2010, 10:06 PM
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That will be a neat project.
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Old 10-10-2010, 10:29 PM
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Thanks

Last month I bought a running low mile '52 331 off a friend. I made a few measurements & it should drop in. I knew the 2bbl would have to go, so I found the 54 4bbl & heads.

I just can't get over how big these early hemi's are...


Last edited by tjet; 10-10-2010 at 10:40 PM.
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Old 10-10-2010, 11:32 PM
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Very impressive response Centerline. Pictures and everything! It's people like you that make this site great. Thanks for the detailed response!!

Last edited by dlyle123; 10-10-2010 at 11:38 PM.
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Old 10-10-2010, 11:32 PM
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Quote:
Originally Posted by tjet
......I just can't get over how big these early hemi's are...
....and heavy. However, nothing has more class than an early hemi. Although flatheads and nailheads are a close second.
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