September Trivia
Nov, 29 2011 SSCC News and InfoTrivia Questions
September Trivia Question
Q: While at Carlisle this August, I was eating lunch under the bleachers and overheard bits and pieces of a conversation between two Corvette aficionados. Below is some of the bits that I could hear. What was being discussed?
"...staggered bolt holes... 7 fin... casting flaw... 9 fin..."
What was being discussed? And for extra credit, elaborate on the four items.
A: Again, Corvette scholar Dennis Grand and resident Corvette Genius Ron Campot raised their hands with the correct answers. To quote Dennis:
Answer: Cast Alloy Valve Covers
“Staggered bolt holes” – 1956 through 1959 valve covers had staggered mounting holes.
“7 fin” – optional small block engines from 1960 through 1967 had 7 fin, straight across mounting hole valve covers. Base engine valve covers were stamped steel painted to match engine.
“Casting flaw” – during late production 1966, and through 1967, the mold cracked and a flaw showed up creating a line through the letter "o" in the script Corvette. So the correct alloy covers for late 66 and all of 67 should contain the flaw.
“9 fin” – optional engines from 1956 through 1959, had 9 fin, staggered mounting hole valve covers. Base engine valve covers were stamped steel painted to match engine.
Just an FYI: All 1968 through 1980 base 327s and 350s used stamped steel valve covers, painted to match engine color; the 1968 350hp engine used stamped steel chrome plated valve covers. All 1969 through 1977 hi-performance engine (350hp, LT-1s, L82s) used cast aluminum valve covers; 1978 through 1980 L82s and all 1981 and 1982 valve covers were black aluminum.
Q: While at Carlisle this August, I was eating lunch under the bleachers and overheard bits and pieces of a conversation between two Corvette aficionados. Below is some of the bits that I could hear. What was being discussed?
"...staggered bolt holes... 7 fin... casting flaw... 9 fin..."
What was being discussed? And for extra credit, elaborate on the four items.
A: Again, Corvette scholar Dennis Grand and resident Corvette Genius Ron Campot raised their hands with the correct answers. To quote Dennis:
Answer: Cast Alloy Valve Covers
“Staggered bolt holes” – 1956 through 1959 valve covers had staggered mounting holes.
“7 fin” – optional small block engines from 1960 through 1967 had 7 fin, straight across mounting hole valve covers. Base engine valve covers were stamped steel painted to match engine.
“Casting flaw” – during late production 1966, and through 1967, the mold cracked and a flaw showed up creating a line through the letter "o" in the script Corvette. So the correct alloy covers for late 66 and all of 67 should contain the flaw.
“9 fin” – optional engines from 1956 through 1959, had 9 fin, staggered mounting hole valve covers. Base engine valve covers were stamped steel painted to match engine.
Just an FYI: All 1968 through 1980 base 327s and 350s used stamped steel valve covers, painted to match engine color; the 1968 350hp engine used stamped steel chrome plated valve covers. All 1969 through 1977 hi-performance engine (350hp, LT-1s, L82s) used cast aluminum valve covers; 1978 through 1980 L82s and all 1981 and 1982 valve covers were black aluminum.