Quote:

What are the valve timing events of these cams?



284/108 cam------open---------close

intake--------34*BTDC-------70*ABDC

exhaust-------70*BBDC-------34*ATDC

278/290/114 cam----------------------

intake--------25*BTDC-------73*ABDC

exhaust-------79*BBDC-------31*ATDC

IMO, even though theres 6# of boost involved, the extra 6* of intake duration of the 284 cam will make more power. Sure it has more overlap, but at this small cam size it might not be a bad thing.

The overlap period alows the scavenging effect to take place. With enough boost and overlap you may not want that. But , with this small of cam and boost, that small snap of scavenge on overlap maybe usefull.

Id take the 6# of boost @ 284* duration over the 6# of boost @ 278* duration. Im just guessing/bench racing here.