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Just curious but what`s w/all of these wide lsa`s...........is it to take advantage of the upper rpm capabilities?


I looked at four different grinds recommended for my combo with 2 at 110 LSA and 2 at 112 LSA. The lobe separation got wider to accommodate the longer exhaust durations of the cams with the 112 LSA. On all four cams the intake closing point was close to the same, the overlap was close to the same with the exhaust closing and intake opening being close to the same. The difference was the exhaust opening point. The more exhaust duration, the wider the LSA to keep three out of four of the valve events in about the same spot.

8..603 156 mph best, 2905 lbs 549, indy 572-13, alky