Exploring Rocker-arm Ratio and Cam-phase Tuning - Project Pure Poncho

Since a Pontiac V-8 is a pushrod engine (instead of being an overhead cam design), it afforded us the opportunity to explore a different rocker-arm ratio and determine its impact on power.Since a Pontiac V-8 is a pushrod engine (instead of being an overhead cam design), it afforded us the opportunity to explore a different rocker-arm ratio and determine its impact on power. As built, the Mule enjoyed Comp Cams full roller rocker arms with a ratio of 1.65:1. The stock ratio is 1.5:1 on Pontiac V-8 engines except for the Ram Air IV, V, and SD-421 engines, which used 1.65:1.
a
Photo Gallery: Exploring Rocker-Arm Ratio & Cam-Phase Tuning - High Performance Pontiac Magazine


Exploring Rocker-arm Ratio and Cam-phase Tuning - Project Pure Poncho | Digg It | Add to del.icio.us




More...