Thank you for the information Dan -
I take it then that variation is / was somewhat common -
Dave
You are welcome. There were all kinds of versions. These engineering numbers came from various Ford and Shelby publications. I cannot prove how accurate they are or what might be missing I have not found.
1964 Cobras (1964 model year engines) very early. Made by Buddy Barksdale’s company but not marked as such.
“C3RA-6582-B (R.H.)” with
chromium plated oil fill tube. Oil fill on the right hand side of the engine for Cobras.
“C3RA-6582-C (L.H.)” with port for PCV valve grommet.
1964 Cobras past very early installations. Made by Buddy Barksdale’s company and so marked.
“C3RA 6582- B2 Valve Cover with Filler Tube R/H (Bud-B) Buddy Ea 17.97 14.47” with oil fill tube for right side of engine (yes, the parts book specifically calls out installation on the right hand side of the engine) The oil fill tube appears to be cadmium plated and chromium plating never returns.
“C3RA 6582- B4 Valve Cover Aluminum RH (1964) Ford (Buddy) Ea 24.75 20.13” Note price increase as suffix changed.
“C3RA 6582- C Cover, Rocker Arm LH Budy Bar Ea 18.68 13.08” for left hand side with PCV port
“C3RA 6582- C5 Valve Cover Aluminum LH (1964) Ford (Buddy) Ea 24.75 20.13”. Note price increase as suffix changed.
In the May 1965 Shelby parts list:
“C4RA 6582-A Cover Rocker Arm RH Budy Bar Ea 17.74 12.42” (PCV RH side in a Mustang chassis)
C3RA 6582-C Cover, Rocker Arm LH Budy Bar Ea 18.68 13.08” (PCV side in a Cobra chassis)
The "C4RA 6582-A" assembly was new and was the made from a new revised casting design. On a GT350 the PCV fitted cover assembly was on the right side of the engine like other Fords.