Valve cover question??
Thread Starter
Instructor
Joined: Oct 2009
Posts: 249
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From: FL
Valve cover question??
Cleaning out my shop to make some room to finish my 71 build. Found these valve covers, but the part# stamped on the back are:
14025553 LH MAG
14025554 RH MAG
474208 RH ALUM
474207 LH ALUM
Since it's not one or the other can I assume they're re-pops? Any info appreciated.
14025553 LH MAG
14025554 RH MAG
474208 RH ALUM
474207 LH ALUM
Since it's not one or the other can I assume they're re-pops? Any info appreciated.
Race Director
Joined: Oct 2000
Posts: 12,596
Likes: 3,082
From: Shamong, NJ
Cleaning out my shop to make some room to finish my 71 build. Found these valve covers, but the part# stamped on the back are:
14025553 LH MAG
14025554 RH MAG
474208 RH ALUM
474207 LH ALUM
Since it's not one or the other can I assume they're re-pops? Any info appreciated.
14025553 LH MAG
14025554 RH MAG
474208 RH ALUM
474207 LH ALUM
Since it's not one or the other can I assume they're re-pops? Any info appreciated.
Those covers were used on 69 350/350's, 70-72 LT-1's and 73-77 L-82's, as well as 69-72 Z-28's. The same covers were also used on 78-80 L-82's, but were painted black with the top of the fins left natural, when used on those years.
In an effort to save weight, for 1981 Chevrolet started casting those covers in magnesium. The magnesium covers were painted black with the top edges of the fins painted light gray. All 81-82 Corvettes used the magnesium covers.
Since the same molds were used to cast both the aluminum and magnesium versions of the finned covers, the part number for both materials was cast into the underside of the covers. All finned valve covers sold by Chevrolet after 81, have both part numbers cast in them.
Thread Starter
Instructor
Joined: Oct 2009
Posts: 249
Likes: 0
From: FL
