Re: {Chrysler 300} 64 K Cross Ram

My 61 Newport has the G induction 413. I first installed the complete stock exhaust system with no heat (blocked off). Ran good indoors for DYNO run. Could not get chokes to completely open. I don't have manual chokes. The choke stoves will not get warm enough to open the chokes. Next run was with full heat. Start up and warm up was good, however, temperature at bottom of carbs were way too hot. Also, full throttle runs indicated that the restricted stock exhaust was choking the engine. Two four barrel carbs with 30 inch runners all going through a 2 inch hole.

Next, I installed the J K headers with full heat. Unbelievable response and runs. Temperature was way down and the only issue I had was the drivers side choke would not open fully. Passenger side was 75 degrees warmer than the drivers side. To correct this issue I made a wire connection to the driver's choke to hold the choke fully opened. After start up I connect this and all is well.

If the chokes are not fully opened, the secondaries will not open on choke stove set-ups.

Also, if you operate the engine when the ambient temperature is above 67 degrees you will not experience what I call "carburetor icing".

The temperature drop in the venturi section of the carbs is 35 degrees. If you do the math 67-35 is 32 degrees, this causes ice to accumulate at the bottom of the carb/intake. This will give you all sorts of issues. This is why you need some heat operating below 67 degrees

No matter what you have installed, after running the engine on the highway for a hour, everything under the hood is 180 degrees (except the exhaust system of course).

I'm running the headers with full heat and 21/2 inch exhaust pipes.

Hope this helps,

Peter 61 STICK

On Thursday, October 19, 2023, 05:45:09 PM EDT, dplotkin@xxxxxxxxxxxxxxxxxxx <dplotkin@xxxxxxxxxxxxxxxxxxx> wrote:

My 61 Savoy with F induction on a 440, custom headers & no carb heat/no chokes barks to life once with fuel and is ready to rock within a few minutes.

You all notice your cars run better in the cold? They do. Denser air charge, less stress.

Carb heat is for station wagons and AACA.

Danny Plotkin

-----Original Message-----
From: "Rick Dutkiewicz" <rdr_inc@xxxxxxxxxx>
Sent: Thursday, October 19, 2023 1:37pm
To: "'Rick King'" <rickking952@xxxxxxxxx>, chrysler-300-club-international@xxxxxxxxxxxxxxxx
Subject: RE: {Chrysler 300} 64 K Cross Ram

I’m sure you’ll get plenty of advice fro our club. This has been a hot-rodding practice since Ed Iskenderian was just a bump on his dad’s camshaft.

You will only sacrifice a bit of cold startup performance but yes, it will help keep carbs / intake a bit cooler.

Rick Haynes Dutkiewicz

From: chrysler-300-club-international@xxxxxxxxxxxxxxxx [mailto:chrysler-300-club-international@xxxxxxxxxxxxxxxx] On Behalf Of Rick King
Sent: October 19, 2023 1:29 PM
To: chrysler-300-club-international@xxxxxxxxxxxxxxxx
Subject: {Chrysler 300} 64 K Cross Ram

Hi everyone, I am thinking of blocking off the the exhaust heat to the intake manifolds as the carbs get to hot in the summer. Has anyone done this and if so how does the car run in colder weather?

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