variable duration lifters (rhoads)

Green 67, Cubic inches eats up duration. 228* @ .050 is more radical in a 302 than a 340/360. You might have a need for them in a small package like that. They do work. Have used them myself. Vacuum improves and smooths out the idle some. Behaves like a smaller cam, around 10* or so. Good luck, Terry.