Rocker arms with a raised "L" . . .

[opelitis1]

what BBC engines / cars were these rockers on??  Any other differences between a stock rocker and these, regarding the adjusting. nuts etc.?
Ted

[ko-lek-tor]

Mike Mavrigian in his book,"How to Rebuild Big Block Chevy Engines Gen. 5&6" says,(I concur)

https://books.google.com/books?id=4vET5Hb8ITUC&pg=PA48-IA87&lpg=PA48-IA87&dq=chevy+l+stamped+rocker&source=bl&ots=CmHxcvCqZn&sig=pkVpTQQHfit-k80qOUxGvM8sspA&hl=en&sa=X&ved=0CC8Q6AEwAzgKahUKEwihro25vv7IAhWM7SYKHbz1DvQ#v=onepage&q=chevy%20l%20stamped%20rocker&f=false

[opelitis1]

Specifically, what year engine(s) and car model(s) would, or could have used this long slot rocker??
Thanks!
Ted