Speedway roller rockers for small block?

pishta said

rocker arm ratio is the distance from the fulcrum CL to the rocker tip. How can they be all over the place...are they not the same 2 castings (L&R) used over and over again? Show us how you figured them out.

Click to expand...

You left out a part Pishta. The ratio is the fulcrum length of the valve side divided by the adjuster side. So, to get a 1.5 ratio, a 1.500" fulcrum length on the valve side would need a 1.000" length on the adjuster side. Improper rocker design, machining tolerance, and setup can affect the actual ratio seen at the valve.