[Stan Weiss]

Originally Posted by Half-Inch Stud

Meanwhile the Calc by David Vizard will advize a 106 LSA or even lower for 9.5:1. He insists.

LSA = 128 - ( 455/8 / 2.11 * 0.91 ) for 10.5:1,

You can move a degree lower for 9.5:1, a degree higher for 11.5:1
Some minor movement for effective Rocker Arm ratio, to account for seat velocity to 0.2" lift
No movement for Longer rods ( 0.25* )


The issue is tradition, Cam marketing, and COTS cam availability.

I get 107 LSA with an advanced ICL using the TMC program I wrote with David. But lets use 106 LSA and 106 ICL and see what the old Desktop Dyno 2003 says.

Stan