Decoding / Identify valve covers... Motion?

[JoeC]

tommy454 - Do your valve covers have the Motion emblems on them?
there is a picture on this ebay ad

http://cgi.ebay.com/ebaymotors/aw-cg...item=536225595



[Edited by JoeC (01-05-2001 at 07:13 PM).]

[COPO]

I have a NOS set of these w/the Motion emblems, but there are no numbers anywhere.

[MrMotion]

I also have a period correct set with the Motion emblems in the insert area of the valve cover and stamped chevrolet 739 on the inside.

[COPO]

Weren't these only used on the '70 and newer cars? I have a bunch of road test from CARS magazines and I haven't seen any or the 69's and earlier.

[MrMotion]

I have the 1969 Hi-peperformance Cars Mag and the Motion catologue ad shows these valve covers with their Ram air induction system.In the Martyn L. Schorr book " Chevrolet the Performance Years" pages 55-62, SS-427 emblems on Chrome valve covers are standard equipment.I believe the finned covers were offered as optional install or over the counter for dress up or conversions and through catologue sales.

[whitetop]

Mr Motion, I have never seen the SS427 emblem on the later style valve covers that is in the above picture. I have seen the SS427 emblem on the the Cal Custom covers that Joel used in the late '60's. I feel the later style covers did not come out until very early '70's or that is when Joel starting using them.
whitetop

[COPO]

I think Mr. Motion is saying the chrome valve covers w/the "SS 427" emblems were standard and beginning in 1969 the finned aluminum ones w/the motion emblem (as shown in the picture) were available as an extra cost option. I haven't personally seen the finned aluminum ones on a '69 car, but if they are in the '69 motion catalog it seems logical that perhaps some had them. It appears beginning in 1970 the finned polished aluminum covers became the "standard" cover.