Question>What Chevy N/A Engine is running 2.450 Intake Valves? 1.80 Exhaust Valves? Hint>
The Cylinder Head P/N is 19431810 desinated "RS-X" spread port>Named after Ron Sperry who helped
develop The Chevy Big Block. The only Chevy Engine that I know of that has bigger valves is the Chevy
DRCE used in NHRA Pro Stock Class. It has an amazing 2.6" intake valves! We are getting close to a
3" intake valve! Comments Please>Larry
The Cylinder Head P/N is 19431810 desinated "RS-X" spread port>Named after Ron Sperry who helped
develop The Chevy Big Block. The only Chevy Engine that I know of that has bigger valves is the Chevy
DRCE used in NHRA Pro Stock Class. It has an amazing 2.6" intake valves! We are getting close to a
3" intake valve! Comments Please>Larry

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