Re: [Chrysler300] Hemi Rocker Arm Covers

["Dave Schwandt" <finsruskw@xxxxxxxxxxxxxxx>]

Can I put an A/C AirTemp sticker on my valve covers???

Or maybe a couple of freeze plugs!
That would be cool!

Dave Schwandt


----- Original Message ----- 
From: "Rich Barber" <c300@xxxxxxx>
To: <paulholm@xxxxxxxxxxxxx>
Cc: "'chrysler 300 Club Intl'" <chrysler300@xxxxxxxxxxxxxxx>
Sent: Monday, April 19, 2010 6:51 PM
Subject: [Chrysler300] Hemi Rocker Arm Covers


> Further research in the parts book indicates the LH side rocker arm covers
> were the same from 1957 to engine # 1585 in 1958.  Probably using up the
> supply of 1957 covers.  Several other posts indicate the '58's had two
> hydraulic (engine) oil return line connections in the LHS cover--from a
> heater door!--This in addition to the coil-mount bracket.
>
> Now I wonder if ALL the solid lifter hemi rocker arm covers were modified
> plain vanilla New Yorker covers.  A set of dies to punch up the four high
> spots/bumps for the short runs of adjustable rocker arm engines may have
> been far cheaper than a complete new set of dies.  I recall that Imperial
> and industrial hemi's had different stamped lettering on the covers.
>
> For you 413 only guys & gals that may be curious, I just received a good
> photo of a '55 rocker arm cover with the bumps and can send you that file,
> or maybe post it on our server???
>
> Perhaps now we can debate/clarify whether the oval-headed machine screws
> fastening the spark plug wire covers to the rocker arm covers should have
> straight slots or Phillips-head.  I've seen some indication there was a
> mid-year change.  My early '55 had chrome-plated slotted head screws which 
> I
> replaced with very similar SS screws from Ace Hardware (special order).  I
> also ordered SS star washers and formed them to fit the tapered screws 
> with
> a screw and a female wood die.
>
> Or, not.
>
> C-300'ly,
> Rich Barber
>
>
> Rich, the 57 and 58 300 valve covers have a spot welded on coil mount, 
> there
> is a small difference between the 57 and 58, one leans more towards the 
> rear
> of the cover, placing the coil a little closer to the power brake booster,
> the other leans the mount towards the front of the cover giving a little
> more space between the coil and the booster.  There is a swap meet vendor
> that has started to make (modify) 'bumped' covers, a reasonably decent job
> of replicating the factory bumps, BUT NO coil mounts.
>
> -- 
> Paul Holmgren
> Mine: 2 57 300-C's in Indy
> Hers: 05 PT GT R/T HO Stage 1
> Hoosier Corps L#6
>
>
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