Originally Posted by fast68plymouth
Quote
I'm at .513" net valve lift on a .575" roller, at .020" lash. With 1.6 rockers.


The rockers aren’t marked for ratio, correct?

My guess is....... they’re 1.5’s in a 1.6 box.

.575 lift with a 1.5 is .383 lobe lift.
You getting .513 with .020 lash, which would put the number at .533 gross lift.
533/383 = 1.39.

I find it hard to believe they’d be that far off(1.6 > 1.39).

1.5 > 1.39 would be bad enough.

The rockers themselves are marked 1.6..