[C2] Valve Covers
Team Owner
Joined: Feb 2003
Posts: 54,124
Likes: 9,438
From: Sitting in his Nowhere land Hanover Pa
2024 C2 of the Year Finalist - Unmodified
2015 C2 of Year Finalist
Your looking for the cast allumiumn Corvette script valve covers with no casting flaw. These cover must be the most popular and most sold by GM in the last 50 odd years
Thread Starter
Instructor
Joined: May 2018
Posts: 198
Likes: 33
From: Nampa Idaho
Melting Slicks
Joined: Aug 2004
Posts: 2,057
Likes: 553
From: Sun Prairie WI
Group 0.386, part #3767493, as in the lower two boxes. The p/n is inside & not visible
Last edited by vark_wso; May 22, 2018 at 09:01 PM. Reason: clarity
Team Owner
Joined: Feb 2003
Posts: 54,124
Likes: 9,438
From: Sitting in his Nowhere land Hanover Pa
2024 C2 of the Year Finalist - Unmodified
2015 C2 of Year Finalist
There are no visible numbers there is a casting number on the back side. If I remember correctly the covers you want have nine fins with straight bolt holes and NO casting flaw that occurred doing the 66 model year. There should be and always are many sets for sale. Paragon reproduces these covers but they still have the flaw but they polish it out. A good judge will detect it
Race Director
Joined: Nov 2003
Posts: 10,696
Likes: 3,091
From: Cottonwood AZ
C1 of Year Finalist (performance mods) 2019
There are no visible numbers there is a casting number on the back side. If I remember correctly the covers you want have nine fins with straight bolt holes and NO casting flaw that occurred doing the 66 model year. There should be and always are many sets for sale. Paragon reproduces these covers but they still have the flaw but they polish it out. A good judge will detect it
Instructor
Joined: Mar 2018
Posts: 159
Likes: 17
From: Austin Texas
I have a pair on right now with the casting flaws. I have the correct ones without the flaws and will be replacing them...which means soon I will have a very cherry pair of "flawed" covers that I am willing to part with. If anyone is interested let me know. It will be in the coming months. You can check my profile pics to see the condition.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Team Owner
Joined: May 2005
Posts: 31,497
Likes: 1,313
From: Huntsville AL
The correct covers for your car were used from 1959 to somewhere in the 1966 model year, when the mold broke, which resulted in the casting flaw.
We generally refer to these valve covers as straight hole no seam (or no flaw) covers.
Lots of people have replaced the "flawed" covers with non flawed ones over the years.
I needed a pair for my 64, so I bought a nice restorable pair for $250, then spent another $177 having the restored.
Prices for good used ones are all over the place.
Do yourself a favor and don't buy a cheap set that just need a "little repair work". The repair work on these is expensive.
I seem to recall that places like Cranes Corvettes and ProTeam both had a restored set in the $400 range.
We generally refer to these valve covers as straight hole no seam (or no flaw) covers.
Lots of people have replaced the "flawed" covers with non flawed ones over the years.
I needed a pair for my 64, so I bought a nice restorable pair for $250, then spent another $177 having the restored.
Prices for good used ones are all over the place.
Do yourself a favor and don't buy a cheap set that just need a "little repair work". The repair work on these is expensive.
I seem to recall that places like Cranes Corvettes and ProTeam both had a restored set in the $400 range.