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The lift is measured at lobe center and does not take into account the rockers as a multipul or the lifters. . The LS engines use a standard rocker of stock 1.7:1 (advertised ratio) LS1 rocker actually pushes the valve off the seat at a ratio of 1.54:1, and as the pushrod seat rises on the valve opening cycle, the effective rocker ratio finally rises to 1.69:1 at 0.280-inch lobe lift (0.473-inch valve lift). Keep in mind that the valve lift at any point in the lift cycle equals lobe lift multiplied by rocker arm ratio.WOW dude you have tuff questions But I can handle it Manny@E.C.P
The lift is measured at lobe center and does not take into account the rockers as a multipul or the lifters. . The LS engines use a standard rocker of stock 1.7:1 (advertised ratio) LS1 rocker actually pushes the valve off the seat at a ratio of 1.54:1, and as the pushrod seat rises on the valve opening cycle, the effective rocker ratio finally rises to 1.69:1 at 0.280-inch lobe lift (0.473-inch valve lift). Keep in mind that the valve lift at any point in the lift cycle equals lobe lift multiplied by rocker arm ratio.
WOW dude you have tuff questions
But I can handle it
Manny@E.C.P
