340 Cam, rocker, valve spring questions

calculate your compression

someone else just went with this low lift selection investigation- went with engle with stock rockers you can run more lift if guides cut with iron rockers
engle, crower, racer brown
then
mopar purple cams or comp cams purple plus (but it's bigger)
i stay away from the comp xe line xcept for the HL which is not U unless more pro style attention to details Lunati may make the cut or may have too much lift most likely not howards same reason
check spring requirements before you buy cam and you need compression and estimate your head flows, intake, exhaust etc chassis converter, gears
how do youwant to drive this
Don't put a cam designed for a chevie in your mopar- there are many other better choices

get the right shafts for those rockers or plan on drlllng some holes
see YR yellow rose procedure or the stickie
or running oil through the pushrods to lube your balls
are your heads cut for viton seals
solid lifters is really way to go as you have the rockers and haave to buy pushrods and lifters in any case- EDM lifters are more reliable than yhd with above stock spring pressure
q 2 yes i check everything springs may or may not for your new cam
do you have the specs?