[Chrysler300] Re: Question regarding long rams vs. short rams on a J

[mwl1967@xxxxxxx]

Hi Carl,
 
    As the owner of both a relatively stock K and a  highly modified K I'll 
tell you I prefer "stock". When I got my first K decades  ago (wow time 
flies when you're having fun) it came with a 413 in the trunk with  a set of 
long rams and matching exhaust manifolds. At 23 years old I didn't yet  know 
the difference and put the car back together as best as I could. It ran  
well. As parts became available I changed to the correct short rams and headers  
and only a few years ago put the correct 3505's back on. 
 
    Although I don't believe you'll notice a difference  in day to day 
cruising around with the car I still hope you decide to make your  J original. 
I'm sure someone will correct me if I'm wrong but the J was  the lowest 
production , lightest, highest horsepower and best overall  performing letter 
car. It was the last letter for standard dual quads  and leather interior. It 
was the last Letter available with 15" wheels or a  150mph speedometer. 
 
    So.. if the parts are available why not make it the  way it's supposed 
to be. Because it's supposed to be and not for "value".   I'm sure someone 
out there could use your long rams for their project. If  you don't do it now 
and then decide in 5 years you want to restore to stock  you might spend 
another 5 years looking for the correct parts.  Just my .02 
 
Mike Laiserin
Scottsdale, AZ
 
 
In a message dated 7/11/2010 6:10:24 P.M. US Mountain Standard Time,  
cbilter@xxxxxxxxx writes:

 
 
 
Hello ram experts. I have some specific questions on cross ram usage in a  
J.
I have a J that some prior owner installed F/G style exhaust heated  long
rams (casting #1947168) with log style exhaust manifolds on the  original
C300J engine, using correct J carbs with manual chokes. I do not  know yet
if it has the original J heads. I am quite certain it has the  original cam,
as based on my work thus far there is no evidence that the  engine was ever
torn apart. While obviously not factory correct as is,  before I consider
acquiring the correct short rams and exhaust headers,  which at least one of
our members has available, I wanted to verify how  well the long ram setup
actually functions on a J. I know that the peak  torque should occur at 2800
rpm vs, 3600 rpm for the short rams based on  internal tube length and the
fact that the valve open duration is 268  degrees on an F, G or J. However,
is there some other factor at least in  theory that would prevent the long
rams from functioning correctly on a J,  or is the valve open duration the
key? In practice, from driving the car  before I started tearing into it, it
seemed to produce copious amounts of  low end torque as I would expect. . 

Anyway, if someone could validate  that the long rams should function OK, I
might consider leaving this  non-stock configuration just for the low end
punch. Since this may not be  of interest to the whole listserver feel free
to respond to me  separately.

Thanks!

Carl Bilter

Cedar Rapids  IA

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