Staggered bolt pattern

[Michael D.]

I found two sets of valve covers in the shed one I think is from a Vette. The one set of valve covers have the Corvette script with NO mould inperfection through the O in Corvette and the bolt pattern is staggered. The other set is an aluminum set without the Corvette script and also has the staggered bolt pattern. Can anyone tell me about what year/years and what these valve covers could be worth. Being a member of the NCRS (National Can't Remember Sh!!) Society, I don't have any idea where or when I got these. Thanks to anyone who can help. MikeD

[Joe L.]

Re: Staggered bolt pattern

I found two sets of valve covers in the shed one I think is from a Vette. The one set of valve covers have the Corvette script with NO mould inperfection through the O in Corvette and the bolt pattern is staggered. The other set is an aluminum set without the Corvette script and also has the staggered bolt pattern. Can anyone tell me about what year/years and what these valve covers could be worth. Being a member of the NCRS (National Can't Remember Sh!!) Society, I don't have any idea where or when I got these. Thanks to anyone who can help. MikeD

Mike------


The "staggered" bolt pattern valve covers were used for 1955-1959 small blocks. I believe those with Corvette script were used for all but base engine Corvette. No aluminum covers were used for 1955 applications. The 1956 applications used a "9 fin" aluminum cover. These are more valuable. 1957-59 used a "7 fin" cover.

1960-67 Corvettes with SHP engines used a "non-staggered" bolt cover, otherwise pretty much identical to the above-referenced "7 fin" covers.

[Bill M.]

Re: Staggered bolt pattern

The one set of valve covers have the Corvette script with NO mould inperfection through the O in Corvette and the bolt pattern is staggered. Can anyone tell me about what year/years and what these valve covers could be worth. MikeD

Those are for early '58 to mid '59. Condition determines price. The Driveline has NOS ones for about $250.

[Mike M.]

Re: Staggered bolt pattern

Mike------


The "staggered" bolt pattern valve covers were used for 1955-1959 small blocks. I believe those with Corvette script were used for all but base engine Corvette. No aluminum covers were used for 1955 applications. The 1956 applications used a "9 fin" aluminum cover. These are more valuable. 1957-59 used a "7 fin" cover.

1960-67 Corvettes with SHP engines used a "non-staggered" bolt cover, otherwise pretty much identical to the above-referenced "7 fin" covers.

joe: 57 vettes(excluding the 220 hp base engine)used the 9 fin staggered up to about vin 4500, when the 7 fin came on board.the rare high script 9 fin was used on the 56 non-base engines and the 57 non-base engines up to about vin 3900. from vin 3900 to about 4500, the low script 9 fins were used. mike

[Bill M.]

Re: Staggered bolt pattern

Those are for early '58 to mid '59. Condition determines price. The Driveline has NOS ones for about $250.

I should have specified that I assumed 7 fins and high (0.125) script!

[Michael D.]

Re: Staggered bolt pattern

Thanks guys, they are 7 fin.. not sure of thescript height Thanks again miked