General engine tech -- Drag Racing to Circle Track
- Posts: 1599
- Joined: Sun Sep 28, 2008 9:25 pm
Its everything. Lifter sliding thru bore faster, valvespring compressing faster, etc it just has a different sound i think. Not sure if the seating velocity is changing, and i hope its not too much or else it could be hammering the seats harder
- Posts: 1412
- Joined: Sat Mar 08, 2008 3:08 pm
- Location: Minneapolis
I concur. Depending on how aggressive the lobes are to begin with.. when only changing rocker ratio from stock 1.5 to 1.8 ratios can generate a BUNCH more sound.