HELP My son thought it would be a good idea to drop a 5.o into a 94 chev s10. and that's all he did . He has left it up to me to finish it . the transmission is a c4 from an ltd not sure what year. the question i have is there is no dipstick and there is a threaded whole on the pan that looks like something should thread into it. the picture is from someone else's post on here and I would like to apologize for using it without permission but i've search for days to find a pic of this on here to explain my situation... if someone can enlighten me as to what its for..