Hi Keith,
The easy answer first - spark plugs. I
recommend the NGK V-power. I just installed a
set of XR5 (#3332) plugs on my J and am pleased
thus far. Available inexpensively at Rock
Auto. You can upgrade with iridium and such but
much more expensive.
The difficult answer next - spark plug wies.
The Lectric Limited set for J and Ram K was
correct in appearance and probably fit well. It
was $950 some ten years ago. That is not a
typo. No wonder it has been discontinued. The
Lectric Limited set for F/G would not be correct
in appearance but can work, but as you state,
some of the wires are too long. I just made
wires for my G using correct reproduction spark
plug holders from the late Michael Burke and
correct wire routing. Wires for #5 and #7 are
much longer and #8 is longer. #6 is shorter.
The remainder would fit ok. The problem is not
just the headers, but the wire routing is
different on J and ram K. 63-64 used the big
spark plug wire towers attached to the valve
covers, the F used none of those, and the G only
used the big tower for #1 and #3.
Your next option is to buy a "semi-custom
universal" set, which would only require cutting
the wires to proper length and attaching the
spark plug boots (which will be included). Most
(but maybe not all) of these universal sets have
long enough wires.
No matter what you use you will need heat
sleeves over the boots on at least #5,#7, #6, #8
and preferably on all 8 boots or the header heat
will destroy the boots on a long run. Ask Jamie
about his drive to Kokomo. Changing plug boots
on a J or ram K in a parking lot gets old real
fast. The wires take a beating as well. High
temp rated silicone is advised.
If you desire reasonably correct appearance,
your only option is to custom make your own
set. I like to get my supplies from Ton's
Performance
Ignition
parts and accessories – Ton's Performance
(tonsperformance.com) It is not that
difficult to make your own wires. You need a
really good crimper. I use one from MSD. The
J and ram K used a dark orange 7mm wire (same
color wire was used on early 413 and 426 max
wedge Dodge and Plymouth) with orange spark plug
boots and 180 degree black distributor boots.
The spark plug boots were 90 degrees except for
#3 which was an obtuse angle like F and G for
the dipstick tube (but 90 degree will work ok on
#3). I can no longer find 7mm orange wire in
bulk. But 8mm bright orange wire in bulk and
universal sets is readily available online and
still looks more correct than black wire imho.
Carl
------ Original Message ------
Date 6/17/2024 4:31:13 PM
Subject Re: {Chrysler 300} 300J and Ram K
spark plugs and plug wires
Hi
Keith,
I don't
expect the Lectric Limited 6302-000 wires
we're running on our F and G longram cars
will work on the shortram '63-'64 cars. A
very few years ago, Lectric was offering
shortram wire sets, but they were far more
expensive - somewhere in the $300-$400
range per set. I don't know if it was just
the high price point that caused them to
discontinue these, or if they had
additional issues with their performance.
I'm
interested in hearing Carl's opinion, as
he custom makes his own wire sets for his
cars.
Noel
Hi Folks
What are you short ram folks using for
spark plugs?
Also, Lectric Limited doesn’t make a
set of wires for these cars . I do have a
set of their 300F 6302 wires that I asked
them about but they won’t commit to them
being a good fit. Because of the
difference in exhaust manifolds they might
be a bit long but figured I’d ask you
folks if there’s a ready-made option Note:
I have these Lectric 300F wires because I
made my own wires for the F from a Summit
Racing set because it has an MSD box and
prefer not to do it again.)
Is Napa a short ram “ready made set”
option?
Thanks in advance!
Keith
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