Need help on a couple of things

[1977cheyenne_C10]

do you guys know around what model engine do i have or how can i identify it?
there were to more switches like the one that i showed do you guys think they can be killer switches?

[83GMCK2500]

Originally Posted by 1977cheyenne_C10

do you guys know around what model engine do i have or how can i identify it?
there were to more switches like the one that i showed do you guys think they can be killer switches?

If you look straight down in front of the passenger side head where it meets the block there will be a flat spot, might take a little cleaning, but there will be something stamped there to aid in identification.