Edelbrock valve spring replacements

Those springs you mention above are suggested for use on a mechanical roller cam? If so must be ultra mild street type cam with super soft lobes. My flat tappet springs are nearly that stout.
I ran a roller that was 240/590 spring pressures and i thought that was moderate spring pressure as that cam saw a lot of street driving. 155-165 seems mighty light
No, I simply pointed out that each of those springs is in the same ballpark as Comp Cams' 928-16 spring, which has 190lb on the seat at 1.800" and a rate of 354lb - and is the suggested spring for all Comp Cams drag race and oval race mechanical flat tappets for the LA Engine.

If you don't want to machine the spring pockets, then I would look for an LS spring that matches whatever the cam manufacturer recommends and see if it fits the bill.

Incidentally, this thread is about fitting springs to Edelbrock heads without machining. I don't need to repeat myself - all the info is contained and is correct regarding the use of LS springs - and I am not recommending beehives to anyone. They are just the spring I use in my application and they have worked very well. You can all do your own homework now.