Re: {Chrysler 300} 300J/300K ram heat riser pipes

On Mon, Jul 15, 2024 at 8:00 AM Dan Plotkin <dplotkin@xxxxxxxxxxxxxxxxxxx> wrote:

John-
I had an amazing check book and have average skills. My builder, Michael LaBrecque (LaBrecque AutoCraft, East Windsor CT) put those headers together. I engineered most of the car though as self-anointed engineer. Mike did the welding.

Funny you noticed the Camry exhaust pipe that dips below the rear suspension. I thought it was only I who saw things like that. You had the courage to mention it! Alas I am not alone.

Danny Plotkin

From: John Grady [mailto:jkg@xxxxxxxxxxxxxxxxx]
Sent: Monday, July 15, 2024 10:44 AM
To: Dan Plotkin <dplotkin@xxxxxxxxxxxxxxxxxxx>
Cc: chrysler 300 club <chrysler-300-club-international@xxxxxxxxxxxxxxxx>
Subject: Re: {Chrysler 300} 300J/300K ram heat riser pipes

makes one immediately think maybe j/k exhaust is a far easier trip , on F /G
405 F had something like J/K but apparently no exhaust heat , just water .
Either none or water works for me , J/K probably fits F , blank off heat , 405 F exhaust so rare I am sure no one has seen j/k exhaust next to it , to see what changed . “ probably” just the exhaust heat aspect , if they had 405 casting patterns already ,from 1960 , would not start from scratch for only a very few cars .

Similarly max HP 61/62 with short rams and big exhaust , we know little detail of them . I have a 62 405 short ram , has heat , might be J K exhaust ; don’t know what PO did .
Put together in early 90’s I think . Manifold visually looks like J ( from memory ) . I wonder what that Big Red factory 405 62 had for exhaust ? vaguely remember water heat on that ? but did not pay attention to exhaust

You have saved me a huge hassle with this post , on the headers , thank you . You have amazing patience and skill to do that ! Although plymouth is swb … may not be same issues everywhere
nice work …

FYI , I put a 392 in F , in process , ( long process— as in move master cylinder to other side of column) we used those after market block hugger stainless headers ( nice pieces , cheap on ebay ) but decided to go under steering ,under the frame all the way , as dump is straight down, right near tie rod . No way to fit 90 bend there above steering —- I see you are on top . i have done that before ( exhaust under frame ) to get large pipes , often wonder about the factory fixation of getting pipes way up higher than rear axle ., that is what sets real ground clearance .

I wonder about 68-9 TNT 440 HP / six pack exhaust too , they are now reproduced , but unsure where outlet is / works in 300 .
Huge step up
over stock 300 exhaust , really lame log manifold

Ever notice Toyotas (? Camry) going down the road — rear exhaust pipe much lower than suspension , that is extreme , sagged or in wrong ?

Now who has a J/ K exhaust pair ?
right …
trade something good, or $

On Jul 15, 2024, at 10:00 AM, Dan Plotkin <dplotkin@xxxxxxxxxxxxxxxxxxx> wrote:

John-
This is my 61 Savoy. We used off the shelf C body headers. We cut them up into many pieces and welded them back together to fit. It was a lot of work. It left us with no way to route the pushbutton shift cable to the transmission given the headers. So we terminated a B&M shift cable at a bracket, transitioned to a rod to pass in-between the header tubes that connects to the 727 with modified shift spring. As to manifold brackets I didn’t want to chance stressing the mounting points on the RAMS, it may not need it but it was not difficult to do.

Danny Plotkin

From: chrysler-300-club-international@xxxxxxxxxxxxxxxx [mailto:chrysler-300-club-international@xxxxxxxxxxxxxxxx] On Behalf Of John Grady
Sent: Monday, July 15, 2024 8:29 AM
To: dplotkin <dplotkin@xxxxxxxxxxxxxxxxxxx>
Cc: chrysler 300 club <chrysler-300-club-international@xxxxxxxxxxxxxxxx>
Subject: Re: {Chrysler 300} 300J/300K ram heat riser pipes

hi Dan
i have a plan like that on an F —I contacted TTI their headers are listed for 62 up C body ( odd way to put it) but they say they have no experience with 60-61 “ don’t know “ “ never did it”

To me , identical side space , 60-61 larger if anything lengthwise , changes there are quite involved and you have to think about it , as engine is in same place re body firewall , ( which is the same ) yet some ?4” less wheelbase so control arms have to be moved back on stub frame . That tightens up header clearance a lot at control arm . . And steering box . There also may be some kind of major change in steering box mount to frame , 60-61 mount to side of frame in lwb at least ,? swb?
but somewhere around 62 or 63 up K frame is used too .
Anyone know when this happened ? after market steering guys ( Borgeson) do not support 61 back , but seem to support 62 ? Talking to them went no where
i would like to put TTI headers listed for 62 in a 60 , unless there is another path ?
I do not think end of ram manifolds need any support . look at size of that casting many bolts to head . Have never seen one break . . It is thicker metal than 727 torque flite case ., Function of heat tubes is heat . Water cooled ones ( 405 ) did not have support ? not sure of that though . Can’t hurt but not needed imho .
Did you use commercial headers ? stock ram log manifold is truly restrictive , why 405 J K and max wedge have what they have . … has to be 20-25 hp better
Thanks,
John

On Jul 15, 2024, at 8:00 AM, dplotkin <dplotkin@xxxxxxxxxxxxxxxxxxx> wrote:

Nick, if you look carefully at the attached photo you will see an exhaust clamp that I refabricated to use as a support for the Ram manifold. I built custom headers for this car so I had a similar issue.

Danny Plotkin

Sent from my Verizon, Samsung Galaxy smartphone

-------- Original message --------
From: Nick Taylor <nicksgaragesd@xxxxxxxxx>
Date: 7/15/24 12:14 AM (GMT-05:00)
To: Chrysler 300 Club International <chrysler-300-club-international@xxxxxxxxxxxxxxxx>
Subject: {Chrysler 300} 300J/300K ram heat riser pipes

Bit by bit, I'm getting the parts back for my ram 300K. A few days ago, the previous owner agreed to sell me the original engine. No ram parts though but there is still hope.

One thing I didn't see in the parts he got with the car originally were the heat riser pipes that go from the exhaust headers to the intakes. I see that they aren't available although a club member had them made in the past. A new friend with a 300J needs them as well.

If you can't get them, do you just block off the ports and do without? I know they also provide some support for the intake manifolds so that might not be a viable option. I contacted a couple exhaust places and they can't try to make them without examples. The bending templates they use to make exhaust systems don't exist for the heat risers.

Thanks for any feedback.

Nick
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<Savoy ram support.JPG>

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