Quote:

Would the lifter valley spider/lifter retainers, etc work in a pre-magnum roller cam block?



correct.

the stock magnum roller cam is whimpy but does respond well to the regular carb/headers/bolt ons..ect.

I run the lunati 60710 voodoo roller with 901-16 springs,it has the long nose for mech pump in my 318. this roller would work nice in the magnum or pre-magnum engine.

almost the exact specs of a whiplash roller cam, but with a wider ICL/LSA. has a smooth stock idle and not the choppy chop chop of the whiplash.