There is no way that is the cam in the LRE though. 340 auto cam was dead probably after '76 and the '77 and later E58 and all EH1 motors probably had the same cam as the 2 bbl 360. Maybe it was a different cam, but no way was it the 340 auto cam. See post 40 in this thread.
post #40 lists a 650cfm TQ which never existed. but let's say for the sake of confusion that it was meant as Q-jet. there again, 404 no such carb found.
it also lists the E58 as 8:1 which, while true, isn't the whole story. some were 8.4:1 depending on year and motor code.
i'll buy that an EH1 had a 340 auto cam. i''ll also buy that an E58 had one as well (i had a dippy with an E58). i've put 340 cams into 360 2bbl motors and they ran like that.