RE: {Chrysler 300} We don't have

["'James Douglas' via Chrysler 300 Club International" <chrysler-300-club-international@xxxxxxxxxxxxxxxx>]

I may be wrong, but I thought that the difference in the "long rams" versus the "short rams" was the length of the internal divider. The actual overall length was the same.

I remember reading about the work during WWII on the sonic nature of intakes and how it was applied to make the ram manifolds.  I assumed that the length of the internal divider changes the RPM range of the sonic "boost".

It has been decades since I read up on that so it could all be a mess in my head!

James

-----Original Message-----
From: chrysler-300-club-international@xxxxxxxxxxxxxxxx <chrysler-300-club-international@xxxxxxxxxxxxxxxx> On Behalf Of Bob Merritt
Sent: Friday, June 20, 2025 5:16 AM
To: Chrysler 300 Club International list server <chrysler-300-club-international@xxxxxxxxxxxxxxxx>
Subject: {Chrysler 300} We don't have

As far as I can tell,

we don't have much on the 405 horse ram option H.

I came across something that says the H short rams

are shorter than the J short rams. Really?

Short short rams, I've never heard of that.

Other questions come to mind:

Did it have a special cam?

What did they do for exhaust manifolds?

How did they get the 11/1 compression ratio?

If this was a dealer installed option, just how much did

they have to change -- seems like an unreasonably big job.


If you have information, please send it to me so I can

assemble an article.

Bob


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