69 Valve cover part numbers

[L78 steve]

What are the part numbers for the LH and RH finned alum. non dripper 69 V/C's ? Were both cast as RH and only one knocked out?
I'm looking at a set and both are RH covers.

[IZRSSS]

Yep...original '69 Z28's came w/o drippers on the inside. Drippers added in '70. I believe both sides had knockouts.

Part Numbers;
Right - 3965542
Left   - 3990994

Casting Number
3932418

[L78 steve]

Do both sides share the same casting number 393418 and RH designation?

[jdv69z]

Yes, the casting should be the same. They become RH and LH when the knockouts are removed. And at that point a new part no.

Jimmy V.

[L78 steve]

Thanks,guys.
I wonder where the 417 casting number came into play?

[canadair]

the valve covers on 1970 model year 69z's did the start of production Aug through Nov 1969's model know have the newer style dripper valve covers with new part numbers.