Technical Mopar long ram intake and carburetor questions

If you run the AFB's it won't ice up.

 

This one is a 413 in a dodge Daytona clone, certainly unexpected when he lifts the hood

 

@Rickybop,
I expect to see that thing getting shined up right quick.
One of my dream cars is a '63 Plymouth with a REALLY BIG STROKER (440+) and one of those long rams.
Probably won't happen cuz "stuff" but that would be Killer!

 

Thanks, @GearheadsQCE
I hate "stuff".

 

A crossram 413 in a Charger Daytona is definitely unexpected. But being fed with a pair of Carter ThermoQuads is really the icing on the cake! With electric choke thermostats on them no less. It mustn't be too troublesome to run true spread-bore carbs on them.

 

There have been aluminum adapters that change an intake square bore carb pattern to a spread bore carb around for years. The early versions also worked the other way by flipping them over, turning a spread bore intake into a square carb base. I believe the latest versions you bought to go which ever direction you wanted to go. Those adapters were cheap back in the 1980s.

 

The long rans moved the max torque down to under 3000 RPM where the later short ram was above 4000 rpm

 

Read your comment: "I would imagine the throttle slow down delay would take some getting used to. Really good brakes would be helpful until that learning curve is completed".

I'm thinking you might have thought there would be continued acceleration until I applied some math to it, disproving that supposition.

 

I went back and fixed it, just for you.

 

My main concern is the throttle delay in my ass.

 

HAhahahaha...
Marcus...

 

Looks like they had the idea before Mopar did haha.

 

It'll never work.

 

I'm embarrassed to have to say I don't remember ever noticing the bubbles/scoops over the front tires.
https://www.roadandtrack.com/motorsports/a31469/dodge-charger-daytona-scoops/

Jim Hall and others did it a little before.
https://upload.wikimedia.org/wikipe...rral_2A_front-left_2005_Monterey_Historic.jpg

 

Was hood clearance ever an issue with the production cross-ram setup, especially with air cleaners installed?

 

No, seeing how Chrysler designed them to fit in Chrysler cars.

 

That's the beauty of putting one of these long ram intakes in my '53 Chrysler. It's the earliest era vehicle with fenders and a hood that's wide enough to fit. But my car also has a substantially higher hood than the cars it originally came in, so I have enough room to do what I want.

 

I would have assumed so with AFB carbs and stock air cleaners. Just wondered if it was tight enough that it became an issue with Holleys, Thermoquads, etc. with aftermaket air cleaners.

 

The long rams did use AFBs and a lot of the systems got removed because of poor winter time drivability

 

This picture gives a pretty good illustration of clearances.
Definitely pushes the limits. Carburetors are almost into the inner fenders. Obvious why they use the small diameter low profile air cleaners. Looks to me that the carburetors are roughly the same height as if sitting on a typical high-rise four barrel intake. The whole thing is just about 4' wide with the air cleaners.

 

I'm sure they had to be cold natured.
My experience was playing with a Corvair using one of those spider intake to mount a 4 barrel carburetor on it. First attempt was using a Holley and it would turn into a big ball of ice after a 20 mile drive to work. Then I tried an AFB, never had the icing problem again.

 

For true, but when those Chrysler 300s were running right, a downshift to "passin' gear" would set you back in the seat stronger than any other early '60s big car.

jack vines

 

Why don’t the AFB ice up vs other carbs?

 

That's what I wanna know, too.

 

And I'm thinking the Thermo Quad might not be the best choice considering they were designed to keep carburetor temperatures down by virtue of their plastic Construction.

 

The ventures are surrounded by gas in the float bowl and the Holley has them espoused to the atmosphere.

 

From what little I've gathered, it's not so much that the AFB is impervious to icing, but that The Holley it is quite susceptible to it.

 

Thermo Quad would be even less of a problem with icing.
To make any carbureted consumer car run from cold to operating temperature in any weather condition took a lot of work. Heat to the carburetor base as well as heat to the air intake. The choke was a big part of helping with this.
Now for performance one would need to ditch all of this and work for a cold intake charge.