RE: [Chrysler300] Known 413 block/ head problems

[RICK AND DEBBIE CLAPHAM <rixpac@xxxxxxx>]

Rich, The 300K ram head is indeed special, it is very similar to the 300J head. It has it's own number as well. They are closed chamber slam heads with valve head diameters of 2.080" intake valves and 1.740" exhaust. The parts man at Glendora Dodge has 6 and 1/2 sets of these heads. they have cast in rocker stands and six bolt valve covers.
Yes they use adjustable rocker gear, solid lifters and specific pushrods. No oiling through push rods on our old Mopar engines. The valve spring had a counter wound internal flat dampener spring inside, not really a dual spring design. I have found no J/K camshafts.

Can have them custom ground, but very expensive. The closest Purple shaft was the solid lifter .455/.465" lift and 268 degree duration, 40 degrees of overlap. they do not list this cam any more. I would check with Hughes engines and see if they have any suggestions. ram cams are special on the short ram.



To: czbill@xxxxxxxxxx; reomotorsports1@xxxxxx; rinandvan@xxxxxxx
CC: Chrysler300@xxxxxxxxxxxxxxx
From: c300@xxxxxxx
Date: Tue, 4 Jun 2013 23:55:43 -0700
Subject: RE: [Chrysler300] Known 413 block/ head problems

  



While we're on the 413 subject, can someone list the differences in valve
trains between NY, 300, 300K and 300K ram engines, say in 1964? I'm aware
of the different cams, bigger intake valves, solid tappets and adjustable
rocker arms but wondering about valve springs and pushrods. Wondering also
about any other significant differences in the 360 HP K heads and the 390 HP
ram heads. If the later pushrods had oil forced through them, would it make
sense to use these in a rebuild?

I'm still looking for a specific recommendation for a replacement camshaft
for a '64K ram engine. The cam shops seem to offer one size fits all cams
for 361 to 426 MW engines and it just seems that the ram engines would
require a camshaft especially ground to work with the rams. None of their
performance cams seem to come anywhere near to matching the J/K ram cam
specs. I have access to an NOS hydraulic cam for a 360HP 300K engine. I
keep hearing about purple cams. What's that all about? If someone has
replaced the cam in their J or K ram engine with something that works well
in the normal driving environment, makes good vacuum, can be made to start
and idle and still create whiplash when stomped, I'd love to hear about it.

C-300-K'ly,

Rich Barber

From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On
Behalf Of Bill Huff
Sent: Tuesday, June 04, 2013 4:32 PM
To: Richard Osborne; rinandal
Cc: Chrysler300@xxxxxxxxxxxxxxx
Subject: Re: [Chrysler300] Known 413 block/ head problems

Pushrod design changed in 1968 from 1967. Lost the stepped end.

Bill Huff

At 6/4/201304:51 PM, Richard Osborne wrote:
>
>
>Should have said Valve train interchangeable 
>EXCEPT pushrods. RB engines are longer than B, 
>the rest of the upper engine parts are interchangeable.
>
>Richard
>
>On Jun 4, 2013, at 4:41 PM, Richard Osborne 
><<mailto:reomotorsports1%40me.com>reomotorsports1@xxxxxx
<mailto:reomotorsports1%40me.com> > wrote:
>
> > The only weakness with the 413 is the fact 
> that most of the heads use 4 bolt valve covers. 
> Not only are they more prone to leakage, but 
> they also are harder to find pretty shiny 
> aftermarket replacements. Other than that parts 
> are the same for the 383, 400, 426W and 440. 
> Parts (VALVE TRAIN) are interchangeable.
> >
> > Richard
> >
> > On Jun 4, 2013, at 2:00 PM, rinandal 
> <<mailto:rinandvan%40att.net>rinandvan@xxxxxxx
<mailto:rinandvan%40att.net> > wrote:
> >
> >> Hi,
> >> Anyone out there aware of any inherent 
> weakness and or problems with 1964 413 c.i. block/heads?
> >>
> >> Thanks,
> >> Van
> >>
> >>
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
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