Purple Shaft 280/280 cam

i agree with the above post.id run a little smaller with your combo.also,what kind of idle are you looking for?you heard the clip of DJV CUDA.its got a pretty healthy lope,and thats in a 360.the idle would be rougher in a 318.a custom grind is worth the extra $ imo,schneider,and isky have made me a few,been happy with the results .